You can now start building/testing your drone-apps right away with FlytSim, a 3D software simulator. This provides a safe and efficient development environment to drone application developers. Several interesting sample onboard (CPP, Python), and web/mobile apps for FlytSim are now available here: http://github.com/flytbase/flytsamples.
Download FlytSim here: http://flytbase.com/flytos/#flytsim
Checkout the FlytSim Demo here: https://www.youtube.com/watch?v=z36zvRfn58U!
Documentation for FlytSim and FlytOS is available here: http://docs.flytbase.com