Caption This - Create a smart caption for your photo in a second!
Zubtitle - Zubtitle is an online tool that makes it easy to add captions to any video.
Captioned - Say, show, share. Create a 60 second captioned video.
QuiCC - Automatic captions & subtitles for video
Caption Ideas App - Creative & funny caption ideas for your social media posts
Tactiq - Meeting notes powered by speech to text transcription