OpenSTF

STF (or Smartphone Test Farm) is a web application for debugging smartphones, smartwatches and other gadgets remotely, from the comfort of your browser. STF was originally developed at CyberAgent to control a growing collection of more than 160 devices. As of July 2016 development is mainly sponsored by HeadSpin and other individual contributors. Refresh speed can reach 30-40 FPS depending on specs and Android version. See minicap for more information. Copy and paste support (although it can be a bit finicky on older devices, you may need to long-press and select paste manually). Multitouch support on touch screens via mini touch, two-finger pinch/rotate/zoom gesture support on regular screens by pressing Alt while dragging. Use ADB connect to a remote device as if it was plugged into your computer, regardless of ADB mode and whether you're connected to the same network.