An anonymous reader writes: My buddies and I would like to work on a complex robotics hobby project (we estimate work will be about a year, it involves mechanics, electronics and software). We need a way share documentation (wiki-style), maintain a project plan (there will be hundreds of tasks and having a hierarchical view and task owners is very useful) and have comments for tasks like a bug tracker. I know there are tools such as Huddle or Basecamp, but am not familiar with them (I'm a mechanical engineer). We are 5 people now, maybe more in the future. Free is best, low-cost is acceptable if the tool is good and saves us pain. We'd rather use a service than installing software that we have to maintain ourselves, we have days jobs and we'd like the time spent with the support tools (patches, hosting, backup and so on) to be minimal. Guidance from slashdotters is appreciated.