Istanbul - Code Coverage Tool - Istanbul is an all-javascript instrumentation library that tracks statement, branch, and function coverage.
SimpleCov - SimpleCov is a code coverage analysis tool for Ruby.
JaCoCo - JaCoCo is a free Java code coverage library.
Codecov - Develop healthier code using Codecov's leading, dedicated code coverage solution. Try it free
dotCover - JetBrains dotCover is a .NET unit test runner and code coverage tool that integrates with Visual Studio.
Atlassian Clover - Atlassian Clover is a Java and Groovy code coverage tool.