Sass - Syntatically Awesome Style Sheets
ioBroker - flexible and modular application for the IoT and Smarthome
PostCSS - Increase code readability. Add vendor prefixes to CSS rules using values from Can I Use. Autoprefixer will use the data based on current browser popularity and property support to apply prefixes for you.
My Devices - Drag and drop IoT project builder for Raspberry Pi
Stylus - EXPRESSIVE, DYNAMIC, ROBUST CSS
Nim Home Assistant (NimHA) - Nim Home Assistant is an open-source home automation platform running on Nim.