Fitnesse

Fitnesse is Acceptance testing framework.
Fitnesse
FitNesse is a software development collaboration tool.
Great software requires collaboration and communication. FitNesse is a tool for enhancing collaboration in software development.
FitNesse enables customers, testers, and programmers to learn what their software should do, and to automatically compare that to what it actually does do.
It compares customers' expectations to actual results.
FitNesse is a software testing tool.
Collaboratively define AcceptanceTests -- web pages containing simple tables of inputs and expected outputs.
FitNesse is a wiki.
You can easily create and edit pages.
FitNesse is a web server.
It requires no configuration or setup.
Just run it and then direct your browser to the machine where it is running (see DownloadingAndInstallingFitNesse).
How Fitnesse Works
Fit works by reading tables in HTML files, produced with a tool like Microsoft Word.
Each table is interpreted by a "fixture" that programmers write.
The fixture checks the examples in the table by running the actual program.