A tool that implements the functional coverage methodology, providing detailed coverage information and improving testing.

FoCuS is a general-purpose tool for improving the testing of an application. FoCuS aids in making sure that both the design of the application and the test suite are complete and cover every aspect of what the application is meant to do. FoCuS is independent of specific applications, while providing much of the functionality of existing domain-specific tools, such as test planning, design and requirements review, code coverage analysis and functional coverage.