https://github.com/writteli/writteli - I've created static site generator because I've wanted something that suits my needs for 100% and I won't need to "fight" with the 3rd party solutions to achieve what I want. Also I've wanted to learn something during the process. I'm using it on daily basis to maintain my website (https://lukaszkups.net) and also now I'm working on a desktop app that will be compatible with it.
https://github.com/mrmnmly/scaffolder - I was sick of creating boilerplate code over and over again when I was doing my baby steps with Meteor.js so I've created a stupid simple bash script that will generate it for me.