XMLUnit
Unit testing of XML for Java and .NET
xUnit.net
Unit testing for C#, F# and Visual Basic
ARCAD
DevOps, testing and modernization tools for IBM i applications
Robolectric
Unit testing framework for Android
Android Studio
Official Android IDE with built-in tools to create and run Android tests
LDRA tool suite TBrun
Unit and integration test tool of the LDRA tool suite