Pennywise - Cross-platform application to open any website or media in a floating window
KiCad - A Cross Platform and Open Source Electronics Design Automation Suite
PiP for Mac - Always on top window preview similar to the popular windows only OnTopReplica
LTspice - LTspice® is a high performance SPICE simulation software, schematic capture and waveform viewer with enhancements and models for easing the simulation of analog circuits.
PiPer - A DIY Minecraft computer to build gadgets
Fritzing - Fritzing is an open-source initiative to support designers, artists, researchers and hobbyists to...