We want to be able to search multiple repositories as once, for example all the Nasqueron ones.
An OpenGrok server is probably the reference, but recently, etsy released Hound which could be interesting to check.
In both cases, we need to be able to get the list of the repositories in a GitHub organization, either to clone ourselves the whole (OpenGrok), either to provide a configuration file to the tool (Hound).
Current status
Hound installed to https://code.nasqueron.org/ indexing every hour GitHub repositories.