Nice and free .Net code coverage support for Visual Studio with OpenCover.

Features:

• Run, debug and cover unit tests in .Net projects
• Browse unit tests in a clean hierarchical view
• Display sequence and branch coverage in the code editor with detailed display for partially covered lines
• Analyze coverage by test
• Show exceptions encountered during testing in code, one click jump to the failed tests
• Display coverage report for the whole codebase
• Export coverage results to HTML
• Support for MSTest (V1 & V2), xUnit (V2.2) and NUnit (V2 & V3) test frameworks
• Clean test output with one click to free up space
• Works well with both dark and light themes

• Debugging issues without building
• Building the code
• Code overview