Aegisub is described as 'advanced subtitle editor for Windows, and UNIX-like systems, such as Linux, Mac OS X and BSD. It is open source software and free for any use' and is a well-known app in the Video & Movies category. There are more than 25 alternatives to Aegisub for a variety of platforms, including Windows, Linux, Mac, the Web and BSD. The best alternative is Subtitle Edit, which is both free and Open Source. Other great apps like Aegisub are Subtitle Workshop (Free, Open Source), Gaupol (Free, Open Source), Subtitle Editor (Free, Open Source) and Gnome Subtitles (Free, Open Source).