Grammarian PRO3 - Grammarian PRO3 is a feature-rich grammar checker that enables you to write better content without taking assistance from the English teacher.
Zubtitle - Zubtitle is an online tool that makes it easy to add captions to any video.
Gramlee.com - Online grammar check, proofreading and copy editing services.
VEED Subtitle - A simple & fast way to add subtitles to your videos online
LanguageTool - Free proofreading tool for OpenOffice, LibreOffice, Firefox, and Chrome.
Streamlabs Podcast Editor - Streamlabs Podcast Editor ― Edit Your Video By Editing Text