Caption This - Create a smart caption for your photo in a second!
Flixier - Flixier Pro is an online video editor that speeds up your workflow with 1 minute rendering on any device, streamlined communication and collaboration features and plenty of cloud storage.
Captioned - Say, show, share. Create a 60 second captioned video.
Spark Camera - Make memorable videos
captionpanda - Automatically add captions to any video on iOS
Showbox - Showbox helps you to create studio quality video in minutes.