I am going to create my first open source project and I am trying to decide where to host it google code or codeplex. It seems to me codeplex has a better set of community features and google code has real svn and a version diff tool. What has been a deciding factor for where to host your project?
For me the number one feature is getting my code in and out of the repositories, which is super easy with google code, and even assembla (altho I'm not up to date with what the latest terms of usage with assembla are). Codeplex leans towards TFS which is hard to use, but you can make it work with SVNBridge and tortoise, which is easier.
Once you worked out getting code in and out, it really comes down to personal preference.
Do you want a Wiki? Do you want an issue tracker? Do you want to have automated builds? Do you need integration with third party tools (like fogbugz or trac)?