I've spent 3 days in Zürich, again! I really like this city :)
Thanks to Maximilian Albert I'm now aware of Inkscape, an Open Source vector graphics editor, and lib2geom. Thanks to Peter Arrenbrecht a mentor for Mercurial GSoC project, I'm now totally convinced that the DVCS is what I really need, either Git or Mercurial :) And thanks to Stefano Tortarolo, a student from Mercurial, the next programming language in my arsenal should definitely be Python!
Some more interesting OSS projects that were presented at the OSS Jam: