Comparison of enterprise search software

The following tables compare the major enterprise search software vendors in their classes.

General information

Product	formerly k.a.	Vendor	Stable release	Update	Platforms	API	Target Customer	Software License	Open source	Multilingual
ViaWorks	VirtualWorks - ViaWorks	VirtualWorks	2.7.3070	March 2017	Windows Server	REST	from small businesses to Enterprises. Digital Transformation / Digital Workplace, Knowledge Management, Enterprise Search.	Subscription based, Seat license	No, but incorporating Apache SolR	Yes, plus entity extraction in 18 languages
Apache Solr	N/A	Apache Software Foundation[1]	7.7.0	February 2019	Windows, Linux	REST	From small business to enterprises.[2] Analysts estimate number of organizations using Solr to be between about 12,000[3] and 23,000[4]	Apache 2.0	Yes	Yes
Lookeen Server[5]	Lookeen Server	Axonic Informationssysteme GmbH	1.3.1.1118	April 2014	Windows Server	.NET	?	?	No	Yes
intergator	intergator Enterprise Search	interface projects GmbH	5.5	March 2018	Windows Server, Linux Server	Java, Groovy, REST, XML/JSON	Enterprise Search, Knowledge-Management, Content Analytics, Big Data, Intranet/Digital Workplace	Yes	No	Yes
Coveo Enterprise Search	Coveo Platform	Coveo Solutions Inc	7.0	February 6, 2014	Windows	REST, SOAP, .NET	Web customer service, customer interaction hubs	?	No	Yes, multilingual user interfaces
Endeca Guided Search	?	Oracle	6.2.2	March 2012	?	?	?	?	?	?
EXALEAD CloudView	?	Dassault Systèmes	R2014	July 2013	Windows Server, Linux Server	Push API (PAPI)	?	Yes	No	Yes, 125 languages supported
Datafari		France Labs	4.4	Jan 2020	Linux Server (for prod), Windows (for test)	REST	Enterprise Search, Knowledge management, Big Data, BI, Analytics	No for the open source community edition, Subscription based for the Enterprise Edition	Yes	Yes
FAST for SharePoint 2010 (F4SP)	Fast Search & Transfer	Microsoft	2010 (SP1)	?	Windows Server, SharePoint	.NET	?	?	No	?
SharePoint 2013	Fast Search & Transfer	Microsoft	2010 (SP1)	?	Windows Server, SharePoint	.NET	?	?	No	?
Google Search Appliance (GSA)	?	Google	7.4	March 2015	?	.NET, Java	?	No more licenses being sold	?	Yes
IBM Infosphere Data Explorer	Vivisimo Velocity	IBM	?	?	?	?	big data and analytics projects	?	?	Yes
Swiftype Search	Swiftype	Swiftype	?	September 2014	Windows and Linux, MacOS	REST APIs	websites and mobile applications	No	?	?
Lucidworks Fusion	N/A	Lucidworks Inc.	4.2.0	March 2019	Windows, Linux, MacOS	REST APIs	Enterprise search, Website Search, Mobile Applications, Online Retail, Knowledge Management, Customer Service, search-based data analytics	Licensed by CPU cores	No	Yes
Micro Focus IDOL[6]	.	Micro Focus	11	March 2016	Windows, HP-UX, Linux, Solaris	SOAP, REST	big data and analytics, Enterprise search, Video, Image or Audio analytics, Knowledge-Management, Info-Governance	Yes, licensed by volume. Starting on 250Gb of Metadata	No	Yes
Funnelback Search	Panoptic Search	Funnelback	15.6	June 2016	SaaS Offering, Windows server, Linux server	REST	Enterprise search, website search, vertical search	Document- and server-based licensing	No	Yes. Multi-lingual support includes indexing, querying and localised UIs
Perceptive Search/ISYS	Enterprise Server	Lexmark Perceptive Software	4.2	?	Windows, Linux, Solaris, Mac OS, HP-UX and AIX	REST, SOAP	?	?	?	Yes
RAVN Connect		RAVN Systems	3.3	February 2014	Windows Server, Linux Server	REST API	?	?	No	Yes
Secure Enterprise Search (SES)	?	Oracle	11.2.2.2	January 2014	Windows, Linux (Oracle, RedHat and SUSE, 32-bit and 64 bit), Solaris	?	?	?	?	?
Sinequa	N/A	Sinequa	11.2	November 2019	Windows, Linux	REST, SOAP, .NET, Java API; JSON and XML	Cognitive Search and Analytics for large enterprises - Enterprise Search, Expert Finder, 360 degree view, etc.	Subscription-based	No	Yes. NLP native in 21 languages. Recognizes 100+ languages.
Syl Search	N/A	Syl Limited	3.3	March 2019	Linux	REST	Semantic Enterprise Search. Indexing file shares, enterprise applications, databases, XML, websites, cloud services, etc.	Licensed by Volume	No	No
searchIT	-	Iphos IT Solutions	2.3	September 2020	Web Based, Cloud, SaaS	?	Enterprise Search, Knowledge-Management, Content Analytics, Big Data, Intranet/Digital Workplace	Subscription based	?	Yes

Features

Content Collection & Indexing

This section compares the ability of the products to collect and index content, both textual and non textual, from different data source types and document types (formats).

Indexing and connectivity

This is about indexing pipeline tools and processes; included connectors, support for connectors, etc.

Web-based

	Description	Lookeen Server[7]	HP IDOL[8]	Coveo for Advanced Enterprise Search[9]	Endeca Guided Search	Sinequa Enterprise Search	VirtualWorks - ViaWorks	EXALEAD CloudView	Datafari	FAST for SharePoint 2010	SharePoint 2013	Google Search Appliance	IBM Infosphere Data Explorer	Swiftype Search	Lucidworks Fusion	Perceptive Search	Secure Enterprise Search[10]	RAVN Connect	intergator	Funnelback Search	Syl Search
HTTP	For crawling of Web servers.	?	Yes	Yes	?	Yes	Yes	Yes	Yes	?	?	Yes	?	Yes	Yes	?	?	Yes	Yes	Yes	Yes
HTTPS	For crawling of secured Web servers.	?	Yes	Yes	?	Yes	Yes	Yes	Yes	?	?	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
XML	For indexing any XML-compliant data source.	?	Yes	Yes	?	Yes	Yes	Yes	Yes	?	?	Yes	?	Yes	Yes	?	Yes	Yes	Yes	Yes	Yes

File-based

	Description	Lookeen Server	HP IDOL	Coveo for Advanced Enterprise Search	Endeca Guided Search 6.2.2	Sinequa Enterprise Search	VirtualWorks - ViaWorks	EXALEAD CloudView	Datafari	FAST for SharePoint 2010	SharePoint 2013	Google Search Appliance	IBM Infosphere Data Explorer	Lucidworks Fusion	Perceptive Search	Secure Enterprise Search	RAVN Connect	intergator	Funnelback Search	Syl Search
Netware file systems	For incremental indexing of Netware file systems.	?	Yes	?	?	?	?	?	?	?	?	?	?	?	?	?	Yes	Yes	No	No
Samba/Unix file systems		?	Yes	Yes	?	Yes	Yes	Yes	Yes	?	?	?	?	Yes	?	?	Yes	Yes	Yes	Yes
Windows file systems, Windows NT Filesystems (NTFS)		Yes	Yes	Yes	?	Yes	Yes	Yes	Yes	?	?	?	?	Yes	?	Yes	Yes	Yes	Yes	Yes

Archiving/Directory

	Description	Lookeen Server	HP IDOL	Coveo for Advanced Enterprise Search[11]	Endeca Guided Search	Sinequa Enterprise Search	VirtualWorks - ViaWorks	EXALEAD CloudView	Datafari	FAST for SharePoint 2010	SharePoint 2013	Google Search Appliance	IBM Infosphere Data Explorer	Lucidworks Fusion	Perceptive Search	Secure Enterprise Search	RAVN Connect	intergator	Funnelback Search	Syl Search
LDAP	For indexing a company directory stored on a LDAP (v2 or v3) server.	?	Yes	Yes	?	Yes	Yes	Yes	Yes	?	?	Yes	?	Yes	?	?	Yes	Yes	Yes	Yes
Microsoft Active Directory	Supports Microsoft Active Directory.	Yes	Yes	Yes	?	Yes	Yes	Yes	Yes	?	?	?	?	Yes	?	?	Yes	Yes	Yes	Yes
Symantec Enterprise Vault	.	Yes	Yes	Yes	?	Yes	Yes	?	?	?	?	?	?	?	?	?	Yes	Yes	No	No

Messaging

	Description	Lookeen Server	HP IDOL	Coveo for Advanced Enterprise Search	Endeca Guided Search	Sinequa Enterprise Search	VirtualWorks - ViaWorks	EXALEAD CloudView	Datafari	FAST for SharePoint 2010	SharePoint 2013	Google Search Appliance	IBM Infosphere Data Explorer	Lucidworks Fusion	Perceptive Search	Secure Enterprise Search	RAVN Connect	intergator	Syl Search
Akonix	.	?	Yes	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?
Facetime	.	?	Yes	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?
IBM Lotus Connections	.	?	?	Yes	?	Yes	Yes	?	?	?	?	?	?	?	?	?	Yes	Yes	?
IMAP	For indexing e-mail messages and attached files stored on an IMAP server.	Yes	Yes	Yes	?	Yes	Yes	Yes	Yes	?	?	?	?	?	?	Yes	Yes	Yes	Yes
IBM Lotus Notes	For indexing e-mail messages and attached files stored on a Lotus notes server.	?	Yes	Yes	?	Yes	Yes	Yes (trigram:CLN)	?	?	?	Yes	?	?	?	Yes	Yes	Yes	Yes
Microsoft Exchange	Ability to retrieve and index e-mail messages and attached files (Mailboxes, Public Folders).	Yes	Yes	Yes, Exchange 2003/2007/2010/2013 Servers	?	Yes	Yes	Yes (trigram:CXG)	Yes	?	?	Yes (via Adhere Solutions partner)	?	?	?	Yes, Exchange 2003 Servers	Yes	Yes	Yes
Microsoft Exchange Online	.	Yes	?	Yes	?	Yes	Yes	.	Yes (IMAP)	?	?	?	?	?	?	?	Yes	Yes	?
NNTP	For real-time indexing of Usenet news groups.	?	?	?	?	?	?	Yes	?	?	?	?	?	?	?	?	?	Yes	?
Gmail	.	?	?	Yes	?	Yes	?	.	Yes	?	?	?	?	?	?	?	Yes	Yes	?

CMS, DMS & Social

	Description	Lookeen Server	HP IDOL[12]	Coveo for Advanced Enterprise Search[13]	Endeca Guided Search	Sinequa Enterprise Search	VirtualWorks - ViaWorks	EXALEAD CloudView	Datafari	FAST for SharePoint 2010	SharePoint 2013	Google Search Appliance	IBM Infosphere Data Explorer	Lucidworks Fusion	Perceptive Search	Secure Enterprise Search	RAVN Connect	intergator	Syl Search
Alfresco	.	Yes	Yes	Yes	?	Yes	Yes	Yes, but no native support	Yes	?	?	Yes (via Incentro partner)	?	Yes	?	?	Yes	Yes	Yes
EMC Documentum Server	.	?	Yes	Yes	?	Yes	?	Yes (trigram:CDO)	Yes	?	?	Yes	?	?	?	Yes	Yes	Yes	Yes
IBM Content Manager	.	?	Yes	?	?	Yes	?	?	?	?	?	Yes (via Adhere Solutions partner)	?	?	?	?	Yes	Yes	Yes
IBM FileNet	.	?	Yes	?	?	Yes	?	?	Yes (P8)	?	?	Yes (via Adhere Solutions partner)	?	?	?	?	Yes	Yes	Yes
IBM WebSphere	.	?	Yes	Yes	?	Yes	?	Yes, Informatica PowerCenter 9.x connectivity	?	?	?	Yes (via Adhere Solutions partner)	?	?	?	?	Yes	Yes	Yes
Jalios	.	?	?	?	?	Yes	?	Yes (trigram:CJA)	?	?	?	?	?	?	?	?	?	?	?
SharePoint	.	?	Yes	Yes	?	Yes	Yes	Yes (trigram:CXG)	Yes	?	?	Microsoft SharePoint Portal Server Microsoft SharePoint Services	?	Yes	?	?	Yes	Yes	Yes
SharePoint Online	.	?	?	Yes	?	Yes	Yes	?	Yes	?	?	?	?	?	?	?	Yes	Yes	Yes
Dropbox	.	?	?	Yes	?	Yes	Yes	?	Yes	?	?	?	?	Yes	?	?	Yes	Yes	Yes
Windows File Share	.	Yes	?	Yes	?	Yes	Yes	?	Yes	?	?	?	?	Yes	?	?	Yes	Yes	Yes
Google Docs	.	?	Yes	Yes	?	Yes	Yes	?	Yes	?	?	?	?	Yes	?	?	Yes	Yes	Yes
Jive	.	?	?	Yes	?	Yes	Yes	?	?	?	?	?	?	Yes	?	?	?	Yes	?
Plumtree	.	?	?	Yes	?	Yes	?	?	?	?	?	?	?	No	?	?	?	Yes	?
Lithium	.	?	?	Yes	?	?	?	?	?	?	?	?	?	?	?	?	Yes	?	?
Confluence	.	?	Yes	Yes	?	Yes	Yes	?	Yes	?	?	Yes (via partner)	?	Yes	?	?	?	Yes	Yes
Twitter	.	?	Yes	Yes	?	Yes	?	?	Yes	?	?	?	?	Yes	?	?	Yes	Yes	Yes
Facebook	.	?	Yes	?	?	Yes	?	?	No	?	?	?	?	?	?	?	Yes	?	Yes
LinkedIn	.	?	Yes	?	?	Yes	?	?	?	?	?	?	?	?	?	?	Yes	?	?

Databases

	Description	Lookeen Server	HP IDOL	Coveo for Advanced Enterprise Search[14]	Endeca Guided Search	Sinequa Enterprise Search	VirtualWorks - ViaWorks	EXALEAD CloudView	Datafari	FAST for SharePoint 2010	SharePoint 2013	Google Search Appliance	IBM Infosphere Data Explorer	Lucidworks Fusion	Perceptive Search	Secure Enterprise Search	RAVN Connect	intergator	Funnelback Search	Syl Search
IBM DB2	.	?	Yes	Yes	?	Yes	Yes	Yes, ETL:Informatica PowerCenter DB2 for Linux	Yes	?	?	Yes	?	Yes	?	?	Yes	Yes	Yes	?
JDBC		?	Yes	Yes	?	Yes	Yes	Yes, translates SQL database fields into XML documents than are then indexed together with the document metadata	Yes	?	?	Yes	?	Yes	?	?	Yes	Yes	Yes	Yes
Microsoft SQL Server	.	?	Yes	Yes	?	Yes	Yes	Yes, ETL:Informatica PowerCenter	Yes	?	?	Yes	?	Yes	?	?	Yes	Yes	Yes	Yes
MySQL	.	?	Yes	Yes	?	Yes	Yes	?	Yes	?	?	Yes	?	Yes	?	?	Yes	Yes	Yes	Yes
ODBC	.	?	Yes	Yes	?	Yes	Yes	Yes, ETL:Informatica PowerCenter	Yes	?	?	?	?	Yes	?	?	Yes	Yes	Yes	Yes
Oracle RDBMS	.	?	Yes	Yes	?	Yes	Yes	Yes, ETL:Informatica PowerCenter	Yes	?	?	Yes	?	Yes	?	Yes	Yes	Yes	?	?
Sybase	.	?	Yes	?	?	Yes	?	Yes, ETL:Informatica PowerCenter	?	?	?	Yes	?	Yes	?	?	Yes	Yes	No	?

CRM, ERP, PLM, BI

	Description	Lookeen Server	HP IDOL	Coveo for Advanced Enterprise Search	Endeca Guided Search	Sinequa Enterprise Search	VirtualWorks - ViaWorks	EXALEAD CloudView	Datafari	FAST for SharePoint 2010	SharePoint 2013	Google Search Appliance[15]	IBM Infosphere Data Explorer	Lucidworks Fusion	Perceptive Search	Secure Enterprise Search	RAVN Connect	intergator	Syl Search
Salesforce	.	?	Yes	Yes	?	Yes	Yes	Yes (trigram:CSF)	Yes (via partner)	?	?	Yes (via partner)	?	Yes	?	?	Yes	?	?
SAP	.	?	Yes	?	?	Yes	Custom	?	Yes	?	?	?	?	?	?	?	Yes	Yes	?
Siebel/Oracle	.	?	Yes	Yes	?	Yes	?	Yes, ETL:Informatica	?	?	?	?	?	?	?	Yes	Yes	Yes	?
Microsoft Dynamics	.	?	?	Yes	?	?	Yes	?	?	?	?	?	?	?	?	?	Yes	Yes	?
Business Object	.	?	Yes	?	?	Yes	?	?	?	?	?	?	?	?	?	Yes	Yes	Yes	?
IBM Cognos	.	?	Yes	?	?	?	?	?	?	?	?	?	?	?	?	Yes	Yes	Yes	?
Informatica PowerCenter	.	?	?	?	?	?	?	Yes (trigram:CJA)	?	?	?	?	?	?	?	?	?	?	?
MicroStrategy	.	?	Yes	?	?	Yes	?	?	?	?	?	?	?	?	?	Yes (via partners)	?	?	?
PTC Windchill	.	?	Yes	?	?	Yes	?	?	?	?	?	?	?	?	?	?	?	Yes	?
ENOVIA	Support for MatrixOne/Enovia data.	?	Yes	?	?	Yes	?	Yes (trigram:CEN)	?	?	?	Yes (via partner)	?	?	?	?	?	Yes	?

Miscellaneous

	Description	Lookeen Server	HP IDOL	Coveo for Advanced Enterprise Search	Endeca Guided Search 6.2.2	Sinequa Enterprise Search	VirtualWorks - ViaWorks	EXALEAD CloudView	Datafari	FAST for SharePoint 2010	SharePoint 2013	Google Search Appliance	IBM Infosphere Data Explorer	Lucidworks Fusion	Perceptive Search	Secure Enterprise Search	RAVN Connect	intergator	Syl Search
Jira	.	?	?	Yes	?	?	Yes	?	Yes	?	?	?	?	Yes	?	?	?	Yes	?
GitHub	.	?	?	?	?	?	Yes, custom	?	Yes	?	?	?	?	Yes	?	?	?	?	?
Slack	.	?	?	?	?	?	Yes	?	?	?	?	?	?	Yes	?	?	?	?	?
Mantis	.	?	?	Yes	?	?	?	?	Yes	?	?	?	?	?	?	?	?	Yes	?
JD Edwards/Oracle	EnterpriseOne, World.	?	Yes	?	?	?	?	Yes ETL:Informatica PowerCenter	?	?	?	?	?	?	?	?	?	?	?
PeopleSoft/Oracle	.	?	Yes	?	?	?	?	Yes ETL:Informatica PowerCenter	?	?	?	?	?	?	?	?	?	?	?

Supported Formats

File type	Description	Lookeen Server	HP IDOL	Coveo for Advanced Enterprise Search[16]	Endeca Guided Search	Sinequa Enterprise Search	VirtualWorks - ViaWorks	EXALEAD CloudView[17]	Datafari	FAST for SharePoint 2010	SharePoint 2013	Google Search Appliance	IBM Infosphere Data Explorer	Lucidworks Fusion	Perceptive Search	Secure Enterprise Search	RAVN Connect	intergator	Funnelback Search	Syl Search
Adobe PDF	Includes Adobe Acrobat or other PDF documents.	Yes	Yes	Yes, Version 1.0 to 1.7	?	Yes	Yes	Yes	Yes	?	?	?	?	Yes	?	Yes	Yes	Yes	Yes	Yes
Web pages	HTML, XHTML, etc.	Yes	Yes, versions v.3, 4, 5	.asp, .aspx, .cgi, .col, .dochtml, .dothtml, .fphtml, .hta, .htm, .html, .jsp, .php, .pothtml, .ppthtml, .shtm, .shtml, .xlshtml	?	Yes	Yes	Yes, versions v.4.01 and above, and XHTML	Yes	?	?	?	?	Yes	?	?	Yes	Yes	Yes	Yes
XML	Extensible Markup Language (.xml)	Yes	Yes	Yes	?	Yes	Yes	Yes, any DTD	Yes	?	?	?	?	Yes	?	?	Yes	Yes	Yes	Yes
Text	Raw text.	Yes	Yes	.ascx, .bat, .cmd, .config, .csv, .dic, .exc, .inf, .ini, .js, .jsl, .log, .nfo, .scp, .sdl, .sln, .txt, .vbdproj, .vbs, .vdp, .vdproj, .vjp, .vjsproj, .vjsprojdata, .wsdl, .wsf, .wtx, .xsd ANSI, ASCII, Unicode	?	Yes	Yes	Yes	Yes	?	?	?	?	Yes	?	?	Yes	Yes	Yes	Yes
Microsoft Excel	Microsoft Excel Charts (.xls), Microsoft Excel XML (.xlsx, .xltm, .xltx) Others (.xlam, .xlb, .xlm, .xlsm)	Yes	Yes	Version 5.0, 95(7.0), 97, 2000, XP, 2003, 2007, 2010. Indexes Excel 2010 attachments.	Yes	Yes	Yes	Yes	Yes	?	?	?	?	Yes	?	Yes	Yes	Yes	Yes	Yes
Microsoft Word	Microsoft Word (.doc) Microsoft Word XML (.docx, .dotx, .dotm)	Yes	Yes for Mac, Windows (multiple versions)	Version 6.0, 6.0 (for MAC), 95 (7.0), 97, 98 (for MAC), 2000, XP, 2003, 2007, 2010 Indexes Word 2010 attachments.	?	Yes	Yes	Yes	Yes	?	?	?	?	Yes	?	Yes	Yes	Yes	Yes	Yes
Microsoft PowerPoint	.pot, .potm, .potx, .ppam, .pps, .ppsm, .ppsx, .ppt, .pptm, .pptx	Yes	Yes	Yes, Indexes PowerPoint 2010 attachments.	?	Yes	Yes	Yes	Yes	?	?	?	?	Yes	?	Yes	Yes	Yes	Yes	Yes
Microsoft Access	MDB	?	Yes	?	?	Yes	Yes	?	Yes	?	?	?	?	?	?	Yes	Yes	Yes	Yes	Yes
Microsoft Project	MPP	?	Yes	?	?	Yes	Yes	?	?	?	?	?	?	?	?	Yes	Yes	Yes	No	Yes
Microsoft Visio	VSD	?	Yes (multiple versions)	?	?	?	Yes	?	?	?	?	?	?	?	?	?	Yes	Yes	No	Yes
Microsoft Outlook	Message, archives, and templates (.msg, .oft, .pst)	Yes	Yes	Yes	?	Yes	Yes	?	Yes	?	?	?	?	?	?	?	Yes	Yes	No	Yes
MIME documents	Multipurpose Internet Mail Extension.	Yes	Yes, Microsoft Outlook Express Mac and PC (multiple versions) (.eml)	.email, .eml, .ews, .mime MIME converter available with CES 7.0.5935+	?	Yes	Yes	Yes	Yes	?	?	?	?	?	?	?	Yes	Yes	No	Yes
Sun StarOffice	.	?	?	?	?	Yes	Yes	?	?	?	?	?	?	?	?	Yes	?	Yes	No	No
Lotus 1-2-3	.	?	?	?	?	Yes	?	?	?	?	?	?	?	?	?	?	Yes	Yes	No	No
Lotus Freehand	.	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?	Yes	Yes	No	No
Corel WordPerfect	Corel WordPerfect Linux (.wps) Corel WordPerfect Macintosh (.wps) Corel WordPerfect Windows (.wo) Corel WordPerfect Windows (.wpd)	?	Yes	?	?	Yes	Yes	Yes, version 6 and 7	Yes	?	?	?	?	?	?	?	Yes	Yes	No	Yes
Archive files	.	?	7Z, DMG, HQX, BIZIP2, GZ, ISO, JAR, EMX, BIN, BKF, CAB, LZH/LHA ZIP, RAR, RTFD, TAR, Z, UUE multiple versions.	?	?	Yes	Yes	RAR, ZIP	Yes	?	?	?	?	Yes	?	?	Yes	Yes	Yes	Yes
RTF	Rich Text Format	Yes	Yes, multiple versions.	?	?	Yes	Yes	Yes	Yes	?	?	?	?	Yes	?	?	Yes	Yes	Yes	Yes
Image files (text extraction)		Yes	?	Yes, .bmp, .jpeg, .max, .pcx/.dcx, .pdf, .png, .tiff, .tiff-fx requires the Optical Character Recognition (OCR) module.	?	Yes (via partner)	Yes	?	Yes	?	?	?	?	Yes	?	?	Yes	Yes	No	No
Images (metadata extraction)	Creation of thumbnail.	Yes	Yes	.bmp, .emf, .exif, .gif, .icon, .jpeg, .png, .tiff, .wmf	?	Yes	Yes	Yes, JPEG, PNG, GIF, PNG	Yes	?	?	?	?	Yes	?	?	Yes	Yes	Yes	Yes
Audio (text extraction)		?	?	.aif, .aifc, .aiff, .asf, .au, .cda .mid, .midi, .mp1, .mp3, .mpga, .rmi, .snd, .wav , .wma Requires the Coveo Audio Video Search (CAVS) module.	?	Yes (via partner)	?	?	Yes (via partner)	?	?	?	?	?	?	?	Yes	Yes	No	No
Audio (metadata)	Creation of thumbnail.	?	?	?	?	Yes	Yes	Yes, MP3, OGG.	Yes	?	?	?	?	?	?	?	Yes	Yes	Yes	Yes
Video		?	.264, video/3gpp, .3mm, .4mp ... .avi, .m1v, .mov, .mp2, ...	.avi, .m1v, .mov, .mp2, .mp2v, .mpa, .mpeg, .mpg, .mpv2 .qt, .rec, .rm, .rnx, .wm, .wmv Requires the Coveo Audio Video Search (CAVS) module.	?	Yes (via partner)	?	?	Yes (metadata), content via partner	?	?	?	?	?	?	?	Yes	Yes	Yes. Metadata extraction.	Yes. Metadata extraction.
MacroMedia Flash	.	?	?	?	?	Yes, MacroMedia Flash text section and hypertext links	Yes	?	Yes	?	?	?	?	?	?	?	?	Yes	No	No
Autovue 2D & 3D CAD files	.	?	?	?	?	?	Yes	?	?	?	?	?	?	?	?	Yes, Open CAD files directly inside Autovue	?	Yes	No	No
AutoCAD Drawing	AutoCAD Drawing (DWF), AutoCAD Drawing Exchange (DXF)	?	Yes, (multiple versions)	?	?	Yes	Yes	Yes	Yes (via partner)	?	?	?	?	?	?	?	Yes	Yes	No	Yes
CATIA versions 4 and 5	Drawing document (CATDrawing), Part document (CATPart), Assembly document (CATProduct), Model (V4 only)	?	Yes	?	?	?	?	Yes, any 5 version	?	?	?	?	?	?	?	?	?	Yes	No	No
SolidWorks v1	Drawing (.slddrw), Assembly (.sldasm), Part (.sldprt)	?	Yes	?	?	?	?	Yes, 2003 to 2013 releases	?	?	?	?	?	?	?	?	Yes	Yes	No	No
Pro/ENGINEER	Part (.prt), Assembly (.asm)	?	?	?	?	?	?	Yes, any release from R16 to 2001, from WF1 to WF5	?	?	?	?	?	?	?	?	?	Yes	No	No
CAD Open formats	.	?	?	?	?	?	Yes	Yes, IGES version 5.2 and 5.3, STEP-File	Yes (metadata from the DWG CAD format)	?	?	?	?	?	?	?	Yes	Yes	Yes. Metadata from DWG CAD	Yes. Metadata from DWG CAD

Text Analytics

Linguistics	Description	Lookeen Server	HP IDOL	Coveo for Advanced Enterprise Search	Endeca Guided Search	Sinequa Enterprise Search	VirtualWorks - ViaWorks	EXALEAD CloudView	Datafari	FAST for SharePoint 2010	SharePoint 2013	Google Search Appliance[18]	IBM Infosphere Data Explorer	Lucidworks Fusion	Perceptive Search	Secure Enterprise Search[19]	RAVN Connect	intergator	Funnelback Search	Syl Search
Language detection	Ability to identify the languages at indexing time.	?	Yes	Yes	?	Yes	?	Yes	Yes	Yes	Yes	Yes	?	Yes	?	?	Yes	Yes	Yes	?
Synonyms/stemming	Ability to treat as synonyms variations of keywords.	?	?	Yes	?	Yes	Yes	Yes	Yes	Yes	?	Yes	?	Yes	?	?	Yes	Yes	Yes	Yes
Named Entity Extraction	Ability to automatically extract entities such as persons, locations and organizations from indexed content.	?	Yes named "Eduction"	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?	Yes	Yes	?	Yes With automatic entity linking	Yes	Yes	Yes
Stop words	Ability to exclude stop words (e.g. 'an', 'the') in order to improve relevance.	Yes	Yes	Yes	Yes	Yes	Yes	?	Yes	?	?	Yes	?	Yes	?	?	Yes	Yes	Yes	Yes

Audio & Video Analytics

Multimedia	Description	Lookeen Server	HP IDOL	Coveo for Advanced Enterprise Search	Endeca Guided Search 6.2.2	Sinequa Enterprise Search	VirtualWorks - ViaWorks	EXALEAD CloudView	Datafari	FAST for SharePoint 2010	SharePoint 2013	Google Search Appliance	IBM Infosphere Data Explorer	Lucidworks Fusion	Perceptive Search	Secure Enterprise Search	RAVN Connect	intergator	Syl Search
Audio analytics	Ability to understand topics being discussed, genders and emotional tones of speech, music, etc.	?	?	?	?	Yes (via partner)	?	?	Yes (via partner)	No	?	?	?	?	?	?	Yes speech, topics, music, keyword spotting	?	?
Video analytics	Ability to understand the content of the video without relying on metadata (e.g. key framing, facial identification, logo recognition, etc.)	?	Yes	?	?	Yes (via partner)	?	?	Yes (via partner)	No	?	?	?	?	?	?	Yes	?	?
Image analytics	Ability to detect patterns in image (e.g. faces, bodies, gender, age range, expression, etc.)	?	Yes	?	?	Yes (via partner)	Yes	?	Yes (via partner)	?	?	?	?	?	?	?	?	Yes	?

Search Experience

This section compares the ability of the products to :

Enable the user to enter and execute the query
Present the data to the user within seconds after the query is parsed and processed so that the user can find what he seeks quickly and act on it.

Search Language

Query Parser	Description	Lookeen Server	HP IDOL	Coveo for Advanced Enterprise Search[20]	Endeca Guided Search	Sinequa Enterprise Search	VirtualWorks - ViaWorks	EXALEAD CloudView	Datafari	FAST for SharePoint 2010	SharePoint 2013	Google Search Appliance	IBM Infosphere Data Explorer	Lucidworks Fusion	Perceptive Search	Secure Enterprise Search	RAVN Connect[21]	intergator	Funnelback Search [22]	Syl Search
Wildcard search	Does the system use the asterisk ("*") and question mark ("?") character as a wildcard?	Yes	?	Yes	?	Yes	Yes	?	Yes	?	?	Yes	?	Yes	?	Yes	Yes	Yes	Yes	Yes
Fuzzy search	Does the system offer phonetic and approximate spelling search? (distinctions of syntax and semantics)	?	?	Yes	?	Yes	Yes	Yes	Yes	?	?	?	?	Yes	?	Yes	Yes	Yes	Yes	Yes
Exact phrase search	Does the system enable to find words as a phrase?	Yes	Yes	Yes	?	Yes	Yes	?	Yes	?	?	?	?	Yes	?	?	Yes	Yes	Yes	Yes
Proximity search	Support for advanced proximity operators - NEAR, BEFORE, AFTER.	?	?	Yes	?	?	Yes	?	Yes	?	?	?	?	Yes	?	?	Yes	Yes	Yes	?
Range search	Ability to match all terms which are lexically between square brackets ("[]") and curly braces ("{}").	?	?	?	?	Yes	Yes	?	Yes	?	?	?	?	Yes	?	?	Yes	Yes	Yes	?
Boosting a term	Automatic bigram and trigram relevancy boosting.	?	?	Yes	?	?	?	?	Yes	?	?	?	?	Yes	?	?	Yes	Yes	Yes	?
Boolean search	Does the system interprets Boolean operators?	Yes	Yes	Yes	?	Yes	Yes	?	Yes	?	?	?	?	Yes	?	Yes	Yes	Yes	Yes	Yes
Graph search	Does the system keep relationships between fields and allows searching for them (while enabling full-text search)?	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?	Yes	Yes	No	?

Search Query

This is the process of searching (querying).

	Description	Lookeen Server	HP IDOL	Coveo for Advanced Enterprise Search[23]	Endeca Guided Search	Sinequa Enterprise Search	VirtualWorks - ViaWorks	EXALEAD CloudView	Datafari	FAST for SharePoint 2010	SharePoint 2013	Google Search Appliance	IBM Infosphere Data Explorer	Lucidworks Fusion	Perceptive Search	Secure Enterprise Search	RAVN Connect	intergator	Funnelback Search	Syl Search
Auto-complete	Does the system provide an automatic query guidance in the search box while typing?	?	Yes	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?	Yes	?	Yes	Yes	Yes	Yes[24]	Yes
Spell-checking	Does the system checks if the words in the query are spelled correctly and suggest corrections?	?	Yes	Yes	?	Yes	Yes	Yes	Yes	?	?	Yes	?	Yes	?	Yes	Yes	Yes	Yes [25]	Yes
Federated search	The ability to send the same query simultaneously to several searchable sources.	Yes	Yes	Yes	?	Yes	Yes	?	Yes	Yes	?	Yes	Yes	?	Yes	Yes	Yes	Yes	Yes[26]	Yes
Advanced search page	Does the system allow users to perform complex and sophisticated queries?	Yes	?	Yes	?	Yes	?	Yes	Yes	?	?	Yes	?	Yes	?	Yes	Yes	Yes	Yes	Yes

Result-list

This is the process of scanning the content of any document directly from the result lists.

	Description	Lookeen Server	HP IDOL[27]	Coveo for Advanced Enterprise Search[28]	Endeca Guided Search	Sinequa Enterprise Search	VirtualWorks - ViaWorks	EXALEAD CloudView	Datafari	FAST for SharePoint 2010	SharePoint 2013	Google Search Appliance[29]	IBM Infosphere Data Explorer	Lucidworks Fusion	Perceptive Search	Secure Enterprise Search	RAVN Connect	intergator	Syl Search
Relevance ranking	Ability to find the highest quality and most relevant documents and bring them to the top of a search results list.	?	?	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes Google Site Search factors in more than 100 variables for each query	?	Yes	Yes	?	Yes	Yes	Yes
Find similar	Ability to find similar links.	Yes	?	?	?	Yes	?	?	Yes	?	?	?	?	Yes	?	?	Yes	Yes	Yes
Hit highlighting	Ability to highlight query key terms within the document in search result.	Yes	Yes	Yes	?	Yes	Yes	Yes	Yes	No	No	Yes	?	Yes	?	Yes	Yes	Yes	Yes
Summarization (view as HTML)	Does the system offer content preview in the search result, so that users can judge relevance of results?	Yes	Yes	Yes	?	Yes	Yes	Yes	Yes	*only available for Office file types (Powerpoint, Excel, Visio, etc.)	Partial	Yes converts over 220 file formats into HTML	?	?	?	Yes	Yes	Yes	Yes
	Does the system enable to copy/paste from within the preview?	Yes	?	Yes	?	Yes	Yes	Yes	Yes	No	No	Yes	?	?	?	?	Yes	Yes	Yes
Thumbnails and preview	Ability to generate thumbnails for a large amount of different file types.	?	Yes 100+ doc types	Yes	?	Yes	Yes	Yes, but low resolution for CATProducts no thumbnails for Pro/E assemblies	Yes	*only available for Office file types (.DOCx, .PPTx) First page thumbnail preview	Partial	?	?	?	?	?	Yes	Yes	Yes
Full document graphical preview	Ability to access the content of any document without having to open a windows client application.	?	?	?	?	Yes	Yes	Yes regardless of the file's original application	Yes	*only available for PowerPoint file types	Yes	?	?	?	?	?	Yes Asynchronous loading	Yes	Yes
Document comparison	Ability to compare.	?	Yes for version management, signature identification, among other features	?	?	Yes	?	Yes	?	?	?	?	?	?	?	?	Yes	Yes	Yes
Clustering	Ability to dynamically organize search results into groups.	?	Yes	?	?	Yes	?	Yes	Yes	?	?	Yes group search results by topic	?	Yes	?	?	Yes	Yes	Yes
Sort by fields	Ability to sort all results by order of date or other attribute.	Yes	?	Yes	Yes	Yes	?	Yes	Yes	?	?	Yes	?	Yes	?	Yes, "hard sort"	Yes	Yes	Yes

Faceted Navigation

This is the process of browsing the content by narrowing search results quickly in clicking filters that refine results based on related categories, so that users extract more meaning and insight from the content.

Facets	Description	Lookeen Server	HP IDOL	Coveo for Advanced Enterprise Search[30]	Endeca Guided Search	Sinequa Enterprise Search	VirtualWorks - ViaWorks	EXALEAD CloudView	Datafari	FAST for SharePoint 2010	SharePoint 2013	Google Search Appliance	IBM Infosphere Data Explorer	Lucidworks Fusion	Perceptive Search	Secure Enterprise Search	RAVN Connect	intergator	Syl Search
Multiple filters	Does the system enable the user to filter results in selecting multiple facet values?	Yes	?	Yes	?	Yes	Yes	Yes	Yes	?	?	?	?	Yes	Yes	?	Yes	Yes	Yes
Facet values and counts	Ability to display the term and the number of documents containing that term in the search results.	Yes	?	Yes	?	Yes	Yes	Yes	Yes	?	?	?	?	Yes	?	Yes	Yes	Yes	Yes
Hierarchical- and range facets	.	?	?	Yes	?	Yes	?	Yes	Yes	?	?	?	?	Yes	?	Yes	Yes	Yes	Yes
Date, number and string types	Ability to filter by date/time, number and string data types.	Yes	?	Yes	?	Yes	Yes	?	Yes	Yes	?	?	?	Yes	?	Yes	Yes	Yes	Yes

Social and collaborative

This is the process of asking social network.

	Description	Lookeen Server	HP IDOL	Coveo for Advanced Enterprise Search	Endeca Guided Search	Sinequa Enterprise Search	VirtualWorks - ViaWorks	EXALEAD CloudView	Datafari	FAST for SharePoint 2010[31]	SharePoint 2013[32]	Google Search Appliance	IBM Infosphere Data Explorer	Lucidworks Fusion	Perceptive Search[33]	Secure Enterprise Search	RAVN Connect	intergator	Funnelback Search	Syl Search
Search result tagging	Ability to improve relevancy by creating or adding existing tags.	?	?	Yes	?	Yes	Yes	Yes	No	Yes	?	?	?	?	?	Yes	Yes Real time	Yes	No. Deprecated in v14.0.1	?
Tag searching	Ability to search for a tag.	?	?	Yes	?	Yes	?	Yes	Yes	?	?	?	?	?	?	Yes	Yes	Yes	Yes	?
Personalization/ Audience targeting	Ability to deliver more accurate targeted results.	?	Yes, browse histories, content contributors, and interactions, etc	Yes	?	Yes	Yes	?	Yes	Yes	?	Yes, source, date, metadata and entities biaising	?	Yes	Yes	?	Yes	Yes	Yes	Yes
Expertise location	Ability to find experts in users organization by searching on related keywords.	?	Yes	Yes	?	Yes	Yes	Yes with SDK	Yes	?	?	Yes	?	Yes	?	?	Yes	Yes	Yes	Yes
Saved search	Ability to save searches.	Yes	?	Yes	?	Yes	Yes	Yes with SDK	Yes	No	No	?	Yes	?	Yes	?	Yes	Yes	Yes	Yes
Saved alerts	Ability to save alerts in order to notified when new content matching your queries has been added to the system.	?	?	?	?	Yes	?	?	Yes	?	No	?	?	Yes	?	?	Yes	Yes	No	Yes
Saved RSS feeds	Ability to save RSS feeds.	?	?	Yes	?	Yes	?	?	No	?	No	?	?	?	?	?	Yes	Yes	Yes	No

Mobile support

	Description	Lookeen Server	HP IDOL	Coveo for Advanced Enterprise Search	Endeca Guided Search	Sinequa Enterprise Search	VirtualWorks - ViaWorks	EXALEAD CloudView	Datafari	! FAST for SharePoint 2010	SharePoint 2013	Google Search Appliance	IBM Infosphere Data Explorer	Lucidworks Fusion	Perceptive Search	Secure Enterprise Search	RAVN Connect	intergator	Funnelback Search	Syl Search
Mobile search	Does the system support mobile device access and search?	Yes	?	Yes	?	Yes	Yes	Yes	Yes	?	Yes[34]	?	?	No	?	?	Yes	Yes	Yes	Yes
Mobile UI	Does the system detect the user device (desktop, smartphone, tablet, etc.) and adapt itself based on it?	?	?	Yes	?	Yes	Yes	?	Yes	?	?	?	?	?	?	?	Yes	Yes	Yes. Admin UI and Default Public UI use responsive designs.	Yes
Geolocation	Does the system enable from the end-user's geolocation to provide additional context to filter?	?	?	Yes	?	Yes	?	?	Yes	?	?	?	?	?	?	?	Yes	?	Yes	No
Compatibility	Is the system compatible with iOS.	?	?	Yes	?	Yes	Yes	?	Yes	?	?	?	?	?	?	?	?	Yes	Yes	Yes
	Is the system compatible with Android?	?	?	Yes	?	Yes	?	?	Yes	?	?	?	?	?	?	?	?	Yes	Yes	Yes
	Is the system compatible with Windows Phone?	?	?	Yes	?	Yes	?	?	?	?	?	?	?	?	?	?	?	Yes	?	?

Administration & Architecture

This section compares the flexibility in the underlying architecture, application development, the scalability and the administrative services of the products.

Management & Search analytics

This table is about the ability to report on usage and activity (most popular queries, documents not found, etc.)

Search analytics	Description	Lookeen Server	HP IDOL	Coveo for Advanced Enterprise Search	Endeca Guided Search[35]	Sinequa Enterprise Search	VirtualWorks - ViaWorks	EXALEAD CloudView	Datafari	FAST for SharePoint 2010	SharePoint 2013	Google Search Appliance	IBM Infosphere Data Explorer	Lucidworks Fusion	Perceptive Search	Secure Enterprise Search	RAVN Connect	intergator	Funnelback Search	Syl Search
Web based administration interfaces (HTML)	.	?	?	Yes	Yes	Yes	Yes	?	Yes	?	?	?	?	Yes	?	?	Yes	Yes	Yes	Yes
Search statistics	Does the system collect search statistics?	?	?	Yes	?	Yes	Yes	?	Yes	Yes	?	?	?	Yes	?	Yes	Yes	Yes	Yes	Yes
Search reports	Does the system enable to report search statistics?	?	?	Yes	Yes	Yes	Yes	?	Yes	Yes	?	?	?	Yes	?	Yes, most popular queries	Yes	Yes	Yes	Yes
Portal usage reports	Does the system enable to report on portal usage?	?	?	?	Yes, popular navigation	Yes	Yes	Yes with SDK	?	No	?	?	?	?	?	?	Yes	Yes	No	Yes
Document storage reports	.	?	?	Yes	?	Yes	Yes	?	Yes	No	?	?	?	?	?	Yes, for documents not found	?	Yes	Yes	Yes
Custom reports	.	?	?	?	?	Yes	Yes	Yes with SDK	Yes	No	?	?	?	Yes	?	?	Yes	Yes	Yes	Yes
Click Scoring	Ability to improve relevancy by enabling to track which results are most often clicked.	?	?	?	?	Yes	?	?	Yes	?	?	?	?	Yes	?	?	Yes	Yes	Yes	Yes

Interface flexibility

This is about tools to customize the interface, so that it adds value to any industry or business process.

	Description	Lookeen Server	HP IDOL	Coveo for Advanced Enterprise Search	Endeca Guided Search	Sinequa Enterprise Search	VirtualWorks - ViaWorks	EXALEAD CloudView	Datafari	FAST for SharePoint 2010	SharePoint 2013	Google Search Appliance	IBM Infosphere Data Explorer	Lucidworks Fusion	Perceptive Search	Secure Enterprise Search	RAVN Connect	intergator	Funnelback Search	Syl Search
Standard based open interface	Does the system support all client platforms?	?	Yes, HTTP and XML/JSON	?	Yes	Yes	Yes	?	Yes	?	?	?	?	Yes, XML, JSON and HTTP	?	?	Yes	Yes	Yes. HTML, JSON, XML, RSS and OpenSearch.	?
Page Layout Helper	Ability to change easily to global attributes (logo, fonts, header, and footer) and to the look of the Search Box and Search Results.	?	?	?	?	Yes	Not from UI, but by changing AngularJS template	?	Yes	No, action menu on search results not configurable	?	Yes	?	Yes	?	?	Yes	Yes	No	Yes
Stylesheet editor	Ability to make more extensive changes using XSLT stylesheet.	?	?	Yes	?	Yes	?	Yes Full customization with CSS or Java API & XML	Yes	Yes	Yes	?	Yes XSLT stylesheet editor	?	Yes	?	Yes	Yes	Yes. Full results customisation via FreeMarker[36] and CSS/JS. Cached copies of XML templated via XSLT[37]	No

Scalability

	Description	Lookeen Server	HP IDOL	Coveo for Advanced Enterprise Search[38]	Endeca Guided Search	Sinequa Enterprise Search	VirtualWorks - ViaWorks	EXALEAD CloudView	Datafari	FAST for SharePoint 2010	SharePoint 2013	Google Search Appliance	IBM Infosphere Data Explorer	Lucidworks Fusion	Perceptive Search	Secure Enterprise Search	RAVN Connect	intergator	Syl Search
Index capacity	How many total documents can be indexed into the system?	up to 10 Million	?	?	?	No limit; Over 200 Million in production	No known limit	?	No limit, horizontal scalability	Up to 100 Million	Up to 100 Million	?	?	No determined limit; over several hundred million	?	?	Scalable to billions	Scalable to billions	No determined limit; over several hundred million
Indexing rate	How rapidly documents can be added or reprocessed into the index?	real time	?	?	?	?	? - Depends on documents fed	?	Depends on setup and hardware	?	?	?	?	?	?	?	per requirement, scalable	?	Depends on setup and hardware
Query-processing speed	How many queries per second (QPS) the engine can process?	?	2,000 across all indexed data with sub-second response times	?	?	?	? - Can be scaled	?	Depends on setup and hardware	?	?	?	?	No determined limit	?	scalable		Depands on the datasource. (sub)-second times	Scalable

Platform readiness

Search analytics	Description	Lookeen Server	HP IDOL	Coveo for Advanced Enterprise Search	Endeca Guided Search	Sinequa Enterprise Search	VirtualWorks - ViaWorks	EXALEAD CloudView	Datafari	FAST for SharePoint 2010	SharePoint 2013	Google Search Appliance	IBM Infosphere Data Explorer	Lucidworks Fusion	Perceptive Search	Secure Enterprise Search	RAVN Connect	intergator	Syl Search
General system requirement	Minimum of available disk space.	100 MB	?	?	?	?	3 GB	25 GB	?	?	?	?	?	?	?	?	10 GB	25 GB	10 GB
	Minimum RAM.	8GB	?	?	?	?	8 GB	8 GB	?	?	?	?	?	?	?	?	8 GB	4 GB	16 GB
	Hard drives to store the data files.	?	?	?	?	?	Could be anything. The faster the better.	SCSI, SAS, SAN, over FC or SSD disks (as opposed to SATA disks)	?	?	?	?	?	?	?	?	optimised for throughput SCSI, SAS, SAN	SCSI, SAS, SAN, SSD, HDD	SCSI, SAS, SAN, SSD, HDD

References

this list
"Companies Using Apache Solr, Market Share, Customers and Competitors". discovery.hgdata.com. Retrieved 2019-02-21.
Datanyze. "Apache Solr Market Share and Competitor Report | Compare to Apache Lucene, Apache Solr, Swiftype". Datanyze. Retrieved 2019-02-21.
Lookeen Server Enterprise Search
Micro Focus IDOL
Lookeen Server Enterprise Search
Autonomy Information Connectivity
Coveo connectors
SES 11.2.2.2 Datasheet - Oracle
What Connectors Are Available With Coveo
KeyView IDOL - Product Brief
What connectors are available with Coveo
Coveo Solutions Inc., An Interview with Laurent Simoneau
IBM DB2 Content Manager OD Connector for Google Search Appliance, by Adhere Solutions
Coveo Platform 7, Supported File Formats
Exalead Cloudview Connectors + Formats
Microsoft and Google - BA Insight
Oracle Secure Enterprise Search Administrator's Guide
Search Prefixes and Operators
RAVN Connect, CORE White paper
"Archived copy". Archived from the original on 2016-08-28. Retrieved 2016-08-25.CS1 maint: archived copy as title (link)
Coveo Reports Accelerated Demand for Search & Relevance Technology in 2013 Archived 2014-06-10 at Archive.today
"Archived copy". Archived from the original on 2016-08-28. Retrieved 2016-08-25.CS1 maint: archived copy as title (link)
"Archived copy". Archived from the original on 2016-08-28. Retrieved 2016-08-25.CS1 maint: archived copy as title (link)
"Archived copy". Archived from the original on 2016-08-28. Retrieved 2016-08-25.CS1 maint: archived copy as title (link)
Autonomy KeyView IDOL - Product Brief - Ndm.net
https://onlinehelp.coveo.com/en/ces/7.0/user/what_is_a_quick_view.htm
"Getting the Most from Your Google Search Appliance" (PDF). Archived from the original (PDF) on 2015-06-13. Retrieved 2014-02-10.
Coveo Facets
"Search Solution for Microsoft SharePoint" (PDF). Archived from the original (PDF) on 2016-03-03. Retrieved 2014-02-05.
Introduction to SharePoint 2013 Search
Perceptive Enterprise Search - Product Datasheet Archived 2013-10-07 at the Wayback Machine
"Use a mobile device to work with SharePoint Online sites - Office Support". support.office.com. Retrieved 2017-06-29.
Endeca® Workbench: User's Guide - Oracle Documentation
https://docs.funnelback.com/freemarker.html
https://docs.funnelback.com/xslt_processing.html
Scalability

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[2] this list

[3] "Companies Using Apache Solr, Market Share, Customers and Competitors". discovery.hgdata.com. Retrieved 2019-02-21.

[4] Datanyze. "Apache Solr Market Share and Competitor Report | Compare to Apache Lucene, Apache Solr, Swiftype". Datanyze. Retrieved 2019-02-21.

[5] Lookeen Server Enterprise Search

[6] Micro Focus IDOL

[7] Lookeen Server Enterprise Search

[8] Autonomy Information Connectivity

[9] Coveo connectors

[10] SES 11.2.2.2 Datasheet - Oracle

[11] What Connectors Are Available With Coveo

[12] KeyView IDOL - Product Brief

[13] What connectors are available with Coveo

[14] Coveo Solutions Inc., An Interview with Laurent Simoneau

[15] IBM DB2 Content Manager OD Connector for Google Search Appliance, by Adhere Solutions

[16] Coveo Platform 7, Supported File Formats

[17] Exalead Cloudview Connectors + Formats

[18] Microsoft and Google - BA Insight

[19] Oracle Secure Enterprise Search Administrator's Guide

[20] Search Prefixes and Operators

[21] RAVN Connect, CORE White paper

[22] "Archived copy". Archived from the original on 2016-08-28. Retrieved 2016-08-25.CS1 maint: archived copy as title (link)

[23] Coveo Reports Accelerated Demand for Search & Relevance Technology in 2013 Archived 2014-06-10 at Archive.today

[24] "Archived copy". Archived from the original on 2016-08-28. Retrieved 2016-08-25.CS1 maint: archived copy as title (link)

[25] "Archived copy". Archived from the original on 2016-08-28. Retrieved 2016-08-25.CS1 maint: archived copy as title (link)

[26] "Archived copy". Archived from the original on 2016-08-28. Retrieved 2016-08-25.CS1 maint: archived copy as title (link)

[27] Autonomy KeyView IDOL - Product Brief - Ndm.net

[28] ttps://onlinehelp.coveo.com/en/ces/7.0/user/what_is_a_quick_view.htm

[29] "Getting the Most from Your Google Search Appliance" (PDF). Archived from the original (PDF) on 2015-06-13. Retrieved 2014-02-10.

[30] Coveo Facets

[31] "Search Solution for Microsoft SharePoint" (PDF). Archived from the original (PDF) on 2016-03-03. Retrieved 2014-02-05.

[32] Introduction to SharePoint 2013 Search

[33] Perceptive Enterprise Search - Product Datasheet Archived 2013-10-07 at the Wayback Machine

[34] "Use a mobile device to work with SharePoint Online sites - Office Support". support.office.com. Retrieved 2017-06-29.

[35] Endeca® Workbench: User's Guide - Oracle Documentation

[36] ttps://docs.funnelback.com/freemarker.html

[37] ttps://docs.funnelback.com/xslt_processing.html

[38] Scalability