CodePlex is Microsoft's open source project hosting web site. You will be able to make use of CodePlex not only to create new projects, but also to join others who have already started their own projects, download software created by the community or if you prefer to you can use the applications on this site and provide feedback. By registering on the site you will be able to tag projects, create new work items, upload codes & patches, be part of projects teams and participate in discussions, among other benefits. On this site you will have access to more than 3500 projects, and they give you the possibility to sort them by title, current release, download and project start date.