Subtitles
Jubler
Need subtitles whose dialogue and timing match the video
Subtitle Workshop
Do subtitle lines appear too early, too late, or in the wrong place
AegiSub
When subtitle lines drift out of sync or need careful positioning on screen, AegiSub lets you edit them alongside the video or audio
Subtitle Edit
Subtitle files can be created and revised in Subtitle Edit, with controls for changing their timing and checking synchronization against video