Videopixie - A video production marketplace for brands and creators
Infuse - Media player and media server with subtitles and wide codec support.
Veed.me - Marketplace for video pros
IINA - The modern video player for macOS
Clappr - An extensible media player for the web
Coub - Coub is an app that features GIFs, but the GIFs that you select and send to other people have sounds.