Captionfy.io - Captionfy is a free Youtube community captions platform with a subtitles/captions editor that you can use to create captions for any public Youtube video.

Media.io - Media.io has all the handy tools you need for video & audio converting (.mp4, .mp3, .mov, .mkv, .avi, .wav, etc.) and editing, like generating auto subtitles, applying engaging text, music, effects, templates.

Kapwing - Collaborative video editor for modern creative teams

Universal Word - Translate YouTube subtitles into multiple languages

Captionz - Watch YouTube with dual captions, A-B repeat and more

Subtitle Generator - Subtitle Generator will automatically create subtitles for your YouTube videos and translate them into other languages.