This Open Source Developers Conference (OSDC) aims to be a place for meetings and exchanges between developers from different communities, which too often ignore or distrust each other. The goal is to go beyond trolls and see what we can learn from each other. Similar conferences have been organized in several parts of the world: http://www.osdcon.org/
For the first conference of this kind in France, we'd like to begin by bringing together communities that do innovative open source programming using free/libre languages such as Perl, Python, Ruby...
The goal is to learn by seeing what others are doing. Many concepts and techniques are not tied to a specific language.
We of course welcome many other languages and technologies, particularly the most innovative or specialized, such as Erlang, Haskell, OCaml, Smalltalk, Scala, Groovy, etc.