Project Management Software? Issue Tracker Wiki?
The hosted version seems a bit slow.
File Sharing is under SubVersion.
Project schedule does Data Synch with MsProject.
Does Time Sheet system.
Not surprisingly, has a strong UI focus on the Pro Ject. Making views across projects kinda messy. So, for a Start Up environment, you'd probably want to have a single Project to contain everything.
Dang, not just uses Free Link-s, but does not do Automatic Linking! You have to put double-square-brackets around each WikiWord.