Similar to what workflow 4 ever has on their website (http://sandbox.wf4ever-project.org/), TIMBUS should have on http://testbed.timbusproject.net a landing page that lists all the online tools, so that interested users can try them out without much installation & setup hassle.
Ideally, also each tool would provide examples on how to generate sample outputs (e.g. the dependencies reasoner would suggest which package could be installed)