Open Source Code Coverage Tools in C#

Instruments . NET source code before unit test runs to measure test coverage. Supports NAnt integration and continuous integration builds.

Code coverage tool for . NET. Instruments source before running tests to measure line-by-line coverage; integrates with NAnt and continuous integration.

NAnt task that fails the build when code coverage drops below configured levels by using NCover. Reports which code became untested to support test-driven development and coverage gates in continuous integration.

Open-source . NET code coverage tool analogous to NCover. Supports filtering by assemblies and classes and can report on assemblies without debug symbols.