There's a lot more to most successful open source projects than just the source code itself. Regardless of which tools you use, whether you're leading an open source project or a member of its community of users, there are many things you can do to bring more people into your project. The more people you have, the faster your project will get even cooler. I'll give specific tips and examples of things that people have done that work well. This topic is important, because there are many small open source projects with a very small number of contributors. Just imagine how much more those projects can get done with just a few more good people on board!