FilmHope - A/B test YouTube titles & thumbnails
Subtitles Downloader by Checksub - Sometimes you may want to export or edit the subtitling of Youtube videos that you have uploaded or that you're fans of.
Vibby - Create + share highlights from any video in seconds
Auto Subtitles by Type Studio - A fast & easy way to add auto subtitles to your video online
The YouTube Thumbnail Game - Guess which YouTube video thumbnail has more views
Customize Video by Type Studio - Customize your video by adding text overlays online