PowerUp is a build and deployment framework (built in Powershell)
Migration framework for Umbraco
Provides registration for composites that would otherwise cause circular reference, e.g. CompositeLogger(ILogger)
An overwrite blocking plugin for Umbraco.
Umbraco extension to support creating scheduled tasks.
User & Identity Management
File system assembly discovery for Autofac (e.g. builder.RegisterAssemblyModulesInDirectories).
The simple, flexible and friendly ASP.NET CMS used by more than 225.000 websites
Repository for Usergroup permissions source code
Syncing tool for umbraco to read and write the database elements to disk
A service that monitors a folder and auto-commits any changes to SVN repository