Web based (python and web serial) utility for AGFRC servos. Why? The official utility is Windows only and it's a very awkward piece of software that you cannot scale. No matter the resolution, it just stays tiny and crammed, I almost need a magnifying glass to see what's on it. The protocol is not super complex, but there were really weird timing issues. I worked with Kimi and GLM to install a Wine and sniff the communication between the app and the serial (USB) port and dongle. 

Yes. We drive around Slashes and RC drift cars. Where it's not Yokomo, it's AGFRC, they are pretty bomb-proof and fast. 

It's open source. Take it, improve it, use it and have fun!

See list of supported servos here.