The V-REP API framework can be extended in various ways, in order to offer interfaces that are not directly part of V-REP. This usually happens via a plugin, but other options are also available (add-ons, remote API clients, ROS nodes, etc.). Following lists just a few of them:
The OMPL interface, courtesy of Federico Ferri. More details here.
The Qt-based custom UI interface, courtesy of Federico Ferri. More details here.
V-REP ROS bridge, courtesy of Riccardo Spica and Giovanni Claudio.
ROS control loop in V-REP, courtesy of Antoine Rennuit.
OpenRTM-aist interface to V-REP, courtesy of Yuki Suga.
Snap! interface for V-REP, courtesy of Ilya Nemihin
Bridge to OpenCV, courtesy of Marco Bellaccini
Shared memory communication, courtesy of Diego Daniel Santiago
Labview interface for the remote API, courtesy of Peter Mačička
C# wrapper for the remote API, courtesy of Hendrik Wiese
Project to control NAO with the NAOqi Python SDK, courtesy of Pierre Jacquot & Gurvan Le Bleis
Xbox 360 controller plugin for V-REP, courtesy of Nicola Di Pol
V-REP API framework