JBEdit is an AJAX online video editor (based on jQuery), where the edit capabilities reside on server side. You can extract a selection and tag it. All the edit is done on MP4 videos via ffmpeg.
OMS is used for sequencing events on a timeline, allowing control of software and hardware for music, video, and demoscene productions. It is fairly similar to trackers, which are music editors, famous for their use in games and demoscene productions.