Here are sample projects publicly available for free.
Chronos and Aiôn
Multiple stopwatchs software created for a behavioural experience named "Plus Maze". Initially intended as a last minute back-up tool, it has been used in public research for years.
Aiôn is the second version, currently in beta. Developed from scratch, this one is far more flexible and scalable. Furthermore, it features advanced post-experiment analysis tools. The project page is currently under construction.
More projects are currently in progress and will be added to this list soon.