DVS allows you to play videos on multiple screens/projectors connected to multiple computers. The playlists are managed centrally, so the playback on the different devices is synchronized. DVS was tested on Linux, but should also run on Windows and macOS.
DVS is in active development, currently it provides basic functionality only. But it works ;)
DVS is split in three components: the server manages the playlists and communication between all devices, the client plays the videos and the manager is a GUI to control the playlists. All of them need access to the same media files and all devices must have a network connection to the server: