Ask HN: What code repository to use?

Ask HN: What code repository to use? For past few years I've been working on an application which is basically an alternative secure e-mail system and is based on alternative secure domain names (it means that I can generate the domain names for my customers myself). It represents a client and a server which which besides mail handling supports “DNS” functionality. I want to release the code as open source (a LGPL like license), but with a restriction - that nobody can remove or change root certificates in the program, it's both for security reasons – if somebody changes the root certificates then it can send you false public keys and also for economical reasons – I want to be able to sell domain names for my program (it's an alternative domain name space) The problem is that because of mentioned restriction my license is not fully open source compatible, so it seems that I can't host with major code repositories like SourceForge. What other options I have to use for storing the code of my application?