Istanbul - Code Coverage Tool - Istanbul is an all-javascript instrumentation library that tracks statement, branch, and function coverage.
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JaCoCo - JaCoCo is a free Java code coverage library.
Codecov - Develop healthier code using Codecov's leading, dedicated code coverage solution. Try it free
SimpleCov - SimpleCov is a code coverage analysis tool for Ruby.
Coveralls - Coveralls is a code coverage history and tracking tool that tests coverage reports and statistics for engineering teams.