I have two side projects:
Breakneck Install[0]. I almost hate posting this because what is up on the site is old and I'm finishing up a re-design and re-write which is changing the feature set dramatically. It is going to create MSI files now instead of EXE by using WiX as a backend. The first version of the new release will be able to write to registry, the ability to allow downgrades and possibly setting environment variables (on top of the typical files, license text and setting the Add/Remove Programs Icon for your application).
Plsm [1] - An Mix task written in Elixir to generate Ecto models from an existing schema.
[0] https://www.breakneckinstall.com
[1] https://github.com/jhartwell/Plsm