http://bitbucket.org/

Bitbucket is a code hosting site, for the popular Mercurial version control system. With Mercurial, your data is distributed by definition, but you still need a place to share it, and keep track of your development.

Bitbucket is that. It provides a fully featured environment for managing development, including a wiki (naturally backed by Mercurial, you can clone it!), a powerful issue tracker, and easy collaboration with others.

Simply put, it takes the pain out of sharing code, and lets you focus on what you do best: Code.
What do I get?
HTTP push/pull support
SSH push/pull support (with public key authentication)
Integrated flexible issue tracker
Per-repository wikis (backed by hg repositories)
Plenty of "services" for repositories, automatic issue resolving, web hooks, etc.
Email support (for both paid and free plans)
CNAME support, so you can keep the code on your own domain
Collaborate with other users easily
Source view with highlighting for many languages
Forks and Mercurial Queue (MQ) integration
A bunch of social aspects
RSS/Atom feeds for everything
Host static files on our CDN (Content Delivery Network)

http://msdn.microsoft.com/

MSDN: Microsoft Development, MSDN Subscriptions, Resources, and More

https://www.ohloh.net/

Ohloh is a free public directory of open source software and people.

Ohloh is a wiki, and anyone is welcome to join our community and add new projects to our directory, or to make corrections to existing directory pages. This public review makes Ohloh one of the largest, most accurate, and up-to-date software directories available.

Ohloh is not a forge -- we do not host open source projects in the traditional sense. Ohloh is a directory, a community, and an analytics service. We use the data from our directory to create historical reports about the changing demographics of the open source world.

Ohloh is owned and operated by Geeknet, Inc .