Apache 2 licensed code coverage engine for JVM. Supports branch coverage and per-test coverage tracking. Used in IntelliJ IDEA and in JetBrains TeamCity.
Open the project directory as an IntelliJ IDEA project and run Build | Rebuild Project. The agent binary is created as "coverage-agent.jar" in the 'dist' directory.
Pull requests are welcome. Please post bug reports and feature requests to YouTrack, project "IntelliJ IDEA".