h2. Sharing Maven Artefacts
[https://docs.sonatype.org/display/Repository/Uploading+3rd-party+Artifacts+to+Maven+Central|https://docs.sonatype.org/display/Repository/Uploading+3rd-party+Artifacts+to+Maven+Central]
h2. Sharing Source Code
h3. Git-Subversion Synchronisation
[http://help.github.com/svn-importing/|http://help.github.com/svn-importing/]
[http://www.fnokd.com/2008/08/20/mirroring-svn-repository-to-github/|http://www.fnokd.com/2008/08/20/mirroring-svn-repository-to-github/]
h3. Git-Mercurial Synchronisation
One-way sync is straightforward. Full bi-direction sync looks fiddly.
[http://hg-git.github.com/]
[https://github.com/IronLanguages/main/wiki/Working-With-Mercurial]
[http://traviscline.com/blog/2010/04/27/using-hg-git-to-work-in-git-and-push-to-hg/]
...