Highly opinionated. Dissapointed by the extreme bias against dynamic sql. Certainly it has some flaws, but this recommends avoiding them based on facts like this one:
"Forced parameterisation is, in my opinion, mainly a setting to cover up for poorly designed third-party application that uses unparameterised dynamic SQL."
His solution is to never use this feature of .NET. It's attitudes like this that hold us all back.
There are good gems of knowledge in this article, and the author certainly understands hand writing SQL, but the industry changes and the author needs to get with it or step off the soapbox.

Also worth mentioning is www.assembla.com

Not an open source control. It would be nice for the title to expand on the costs.