Ask HN: How to reach opensource project owners/developers?

I have a commercial project (deleaker; it's a tool to find leaks in c++ code for windows). Now I have an idea to offer a license for free for people who is working on open source projects, for that I would ask to mention Deleaker on their websites/wiki and probably other places (like readme so far).

But how to reach these people? Is there a forum or something like that?...

Thank you!