NDepend

The main features of NDepend are:

• Dependency Visualization (using dependency graphs, and dependency matrix)
• Software metrics (NDepend currently supports 82 code metrics: Cyclomatic complexity; Afferent and Efferent Coupling; Relational Cohesion; Google page rank of .NET types; Percentage of code covered by tests, etc.)
• Declarative code rule over LINQ query (CQLinq)
• Integration with CruiseControl and TeamCity
• Optional code constraints in the source code using CLI attributes
• Version comparison of two versions of the same assembly

CQLinq editor and query result displayed

All recent versions of the tool (after V4) provides live code queries and code rules through LINQ queries. This is one of the main innovations of NDepend. For example:

• Base class should not use derivatives:

 // <Name>Base class should not use derivatives</Name>
 warnif count > 0 
 from baseClass in JustMyCodeTypes
 where baseClass.IsClass && baseClass.NbChildren > 0 // <-- for optimization!
 let derivedClassesUsed = baseClass.DerivedTypes.UsedBy(baseClass)
 where derivedClassesUsed.Count() > 0
 select new { baseClass, derivedClassesUsed }

• Avoid making complex methods even more complex (source code cyclomatic complexity):

 // <Name>Avoid making complex methods even more complex (source code cyclomatic complexity)</Name>
 warnif count > 0 
 from m in JustMyCodeMethods where
  !m.IsAbstract &&
   m.IsPresentInBothBuilds() &&
   m.CodeWasChanged()
 let oldCC = m.OlderVersion().CyclomaticComplexity
 where oldCC > 6 && m.CyclomaticComplexity > oldCC 
 select new { m,
     oldCC, 
     newCC = m.CyclomaticComplexity, 
     oldLoc = m.OlderVersion().NbLinesOfCode,
     newLoc = m.NbLinesOfCode,
 }

Additionally, the tool provides a live CQLinq query editor with code completion and embedded documentation.

• Design Structure Matrix
• List of tools for static code analysis
• Software visualization
• Sourcetrail

• Official website