LibreSource is a versatile collaborative plateform dedicated to both software development and community leading. Based on the Java/J2EE technology, LibreSource is a modular web server that users can custumize online by combining rights and resources: wiki pages, forum, trackers, files, download areas,… Moreover, LibreSource includes a Software Configuration Management tool called LibreSource Synchronizer which is innovative, simple and united. LibreSource Community 2.0 introduces « Single Sign On » authentication, XML synchronization and RSS. LibreSource Enterprise 2.0 appends additional modifications and tools such as Subversion.