Trinidad is an in-process test runner for FitNesse tests. Here are some cool things you can do with it:

• run fitnesse fit and slim tests without starting the server as part of your build
• run fitnesse tests from JUnit within your IDE
• debug and troubleshoot fitnesse fixtures in-process as if you were working with unit tests
• easily include fitnesse acceptance tests into your build (through JUnit)
• easily run tests in transactions and roll back after each test (with Spring)
• execute fitnesse tests from maven