grbl/grbl-sim — pull request #3 by ashelly (2014-10-14 16:22:33+00:00)
Title: Offline Gcode Validator

Offline Gcode validator. As discussed in https://github.com/grbl/grbl/issues/506
Could be used to ensure valid gcode without having hardware available.
Runs much faster than sim, since it doesn't actually track positions.