3D Printer controlling software
- Repetier Host/Server http://repetier.com
- Pronterface/Printrun http://www.pronterface.com/
- OctoPrint http://octoprint.org/
- MatterControl http://www.mattercontrol.com/
- GCodePrintr https://play.google.com/store/apps/details?id=de.dietzm.gcodesimulatorprinter (Android)
3D Printer firmware
- Repeiter http://www.repetier.com/downloads/
- Marlin https://github.com/bobc/Marlin/tree/Marlin_v
- Marlin4Due https://github.com/Wurstnase/Marlin4Due
REPRAP Firmware - Forum RADDS and REPRAP firmware http://forums.reprap.org/read.php?249,569411
- GitHub https://github.com/dcnewman/RepRapFirmware/blob/dev/doc/RADDS-v1.5.md
Slicers
- Slic3r http://slic3r.org/
- Cura https://ultimaker.com/en/products/software
- SIMPLIFY3D https://www.simplify3d.com/ (All in one)
- KISSlicer http://kisslicer.com/
- Skeinforge http://fabmetheus.crsndoo.com/wiki/index.php/Skeinforge
3D Design software
- FreeCad http://www.freecadweb.org/
- OpenSCAD http://www.openscad.org/
- SketchUp http://www.openscad.org/
- Tinkercad http://tinkercad.com/
- Autodesk 123D http://www.123dapp.com/design
Free 3D models
- Thingiverse http://www.thingiverse.com/groups/radds
- YOUMAGINE https://www.youmagine.com/
- yeggi http://www.yeggi.com/
Communities/WiKi
- RepRap.org http://reprap.org/wiki/Main_Page
Other software
- Arduino software http://arduino.cc/en/Main/Software (used to edit/update firmware)
Electronics
- dr-henschke.de http://www.dr-henschke.de/index.html
- Arduino DUE http://www.dr-henschke.de/index.html
- UDOO QUAD http://www.udoo.org/features/
- Raspberry Pi 2 Model B http://www.raspberrypi.org/products/raspberry-pi-2-model-b/
Other Controller boards
- RAMPS-FD http://reprap.org/wiki/RAMPS-FD
- SmoothieBoard http://smoothieware.org/smoothieboard
Tools
- RepRap Calculator http://www.prusaprinters.org/calculator/
- projectBuildr http://projectbuildr.de/