the GeoTools developers have been working, so far, with Subversion as the main version control system. However various core developers have been using Git as a SVN client for quite some time so far, and an official mirror of Geotools, automatically kept in synch with Subversion, is already available on GitHub.
We are now considering switching permantently from Subversion to Git, meaning the Subversion repository will eventually be abandoned and only the Git official central repo will be kept up to date.
Before making such move we'd like to hear from the users community, please take one minute to share your opinion about the switch to Git: