CircuiTikZ TeX/LaTeX package for drawing circuits
Electron based open source toolbox, free integration of rich plug-ins
Documentation tool for ObjectPascal (Free Pascal, Lazarus, Delphi)
Easy-to-use middle and back-end "form/table/chart" solution
JSON powered dynamic forms for Angular
A simple static site generator written in Clojure
Serves up Pandas dataframes via the Django REST Framework