Ask HN: What tool do you use to manage your small side projects?

I use Trello, which makes it simple to set up and track todo lists. It's free and made by Fog Creek Software.

I've been using fogbugz. It's free for teams of 1 or 2, and it's a full-featured bug tracker that doesn't feel too heavy for one-off projects.

Bitbucket for closed source projects, and github for open source ones. They both have issue tracking. What´s wrong with them?

I love the bitbucket issue tracking, because my users can actually add bugs even though the project is closed source.