Undertext

Undertext is a desktop application for Mac OS X with the aim to be simple, quick and easy to use. Compared to using the web browser it's a very quick and comfortable way to find good subtitles.

The searching is done by calculating a unique hash value for every movie file and then looking in OpenSubtitles.org's database for matching subtitles. This way, any subtitles found should be correctly sync'ed with your video file.