Mixxx is Free DJ software that gives you everything you need
LaserGRBL Linux solution, LaserGRBL is one of the best software.
Free DJ software: everything you need to perform live mixes
SOLVESPACE is a free (GPLv3) parametric 3d CAD tool.
Free CAD software
Effectively upsample (yes, seriously) your CD collection
vinylsimtool: simulation of vinyl record playback
A unit testing framework for C and C++
This program removes clicks, pops and bitrots from audio files
A reusable charting library written in d3.js
This plugin exports G-Code for a wirecutter
Drive your METABEAM laser cutter directly from AutoCAD.
Software for controlling a diy foam cutter machine
Cuts 3D objects from polystyrene foam (EPS/XPS)
cnc foam cut software for winch and conventional styro cutters
Digital vinyl sound reconstruction.