autosub
[NO LONGER MAINTAINED] Command-line utility for auto-generating subtitles for any video file - GitHub - agermanidis/autosub: [NO LONGER MAINTAINED] Command-line utility for auto-generating subtitle...
Subtitles Automation
nzb-subliminal
Fetches subtitles for the videos it's provided. It can be easily integrated into NZBGet and SABnzbd too. - GitHub - caronc/nzb-subliminal: Fetches subtitles for the videos it's prov...
vlsub
VLC extension to download subtitles from opensubtitles.org