miscellaneous SQL Scripts that I have moved from my website to a proper VCS like git
Metadata Driven Database Deployment. This is a clone from https://md3.codeplex.com/. This is open source, freeware. I hope you find it valuable. Full documentation is available at http://www.davewentzel.com/md3.
Data Science for the Rest of Us
PerformanceCollector is an open source SQL Server performance monitoring and baselining utility.