Open Broadcaster (OBS Studio) Portable is a free and Open Source application for capturing and streaming videos in real-time. Available for Linux and Mac.
Syncplay can synchronize video playback on many players, including Mplayer, MPV, Media Player Classic, and VLC, so that you can watch movies with friends at the same time.
DCP-o-matic is an Open Source app for creating Digital Cinema Packages (DCPs) from images, videos, sound, and subtitle files. Also available for 32-Bit.
DCP-o-matic is an Open Source app for creating Digital Cinema Packages (DCPs) from images, videos, sound, and subtitle files. 64-Bit is also available.
VSDC Free Video Editor is purpose-designed for easily editing video files and creating videos of any complexity involving various visual and audio effects.
Free Video Cutter Joiner is a user-friendly app that allows you to edit large video files by cutting out unwanted parts like commercials, trailers, and outtakes.