MacCaption & CaptionMaker by Telestream
Telestream offers two tools to create and edit captions, MacCaption and CaptionMaker. They continue to develop both for their respective platforms (MacCaptions for Mac and CaptionMaker for PC). MacCaption v6.3 and later includes Netflix export options which allow you to produce TTML files that meet our technical specifications all the while including the same great feature set that MacCaption has become known for.