Latest stable version:
- PlanetCNC USB software 2.10.1511.401

Manuals and sample g-code:
- Software user manual
- Mk3 user manual
- Mk3/4 user manual
- Mk2 user manual
- Mk2/4 user manual
- Mk1 user manual
- Samples
- PlanetCNC USB Driver
- Contour Shuttle PRO v2 Settings

Software requirements:
- Microsoft .NET 3.5 SP1 Framework

Software developers kit:
   API for Mk3 and Mk3/4 is available. Documentation is still not ready but you can get more information here.