This is a good introduction to the fragmentation problem created by the otherwise good move towards community-hosting of web forges for software development, and the approach ForgeFriends takes to bridging the gap;
https://forum.forgefriends.org/t/definition-and-scope-of-the-forgefriends-project/546
Definition and scope of the forgefriends project
https://forgefriends.org/ is software forge. The software projects hosted on one instance can be synchronized in real time with their counterparts on other forgefriends instances. Developers can freely use the forge of their choosing while contributing to the same project. Presentation Most Free Software projects are hosted on proprietary online services (called forges) that do not provide an export/import feature flexible enough to allow them to move easily (GitHub, SourceForge, etc.). Althoug...