Syncopathy

Free, open source
Visit Project → Source Code → Platforms: Windows, macOS, Linux, Web
utilityvideo-syncopen-sourcefreecross-platformwindowsmacoslinuxweb

Funscript player built around a native Bluetooth implementation of the Handy Streaming Protocol, with command based playback and Buttplug support added later. Bundles mpv for playback. A browser build exists using Web Bluetooth, though that is Chromium only and experimental. By the author of OpenFunscripter.