Grou.ps, a San Francisco start-up that lets you build a social web applications site and run it yourself, has raised $1.1 million in financing. The site includes ways to add wikis, social networking-style user profiles and other features that help groups of people easily share information.

The round was led by Golden Horn Ventures. In fact, we mentioned Golden Horn’s backing when we wrote about the company back in April.

Grou.ps will also now be open-sourcing a restricted version of its code, with a view to spreading its collaboration tools. Grou.ps has about 200,000 active users worldwide, it says.