Jubler is a free and open-source utility for editing subtitle files. It can perform a variety of tasks on text-based subtitle files and supports conversion between various different formats, correcting subtitles and creating new subtitles.
Editing subtitles with Jubler is a cinch. It can perform multiple different tasks: splitting subtitle files, synchorization, copying and pasting, a powerful search and replace function, time shifting, recoding and time-fixing.
This program is actually better than just a freeware application as it is open source and you're free to adapt the program for your own needs, if necessary. It is written in Java 5.0 and thus can be run across multiple platforms like Windows, Mac OS X and Linux.
In order to run this program, you're required to have JRE installed with can be found very easily on the web.
If you're really looking for the full functionality of Jubler, you're going to have to have MPlayer for Windows installed to actually view the movie with the subtitles. The spell checking function will require ASpell installed on your system. Both external applications can also be found with a quick search and after installed, are very easy to integrate into Jubler.
Jubler currently supports most (if not all) popular and common subtitle formats.
From panayotis:Jubler download is an open source tool to edit text-based subtitles. It can be used as an authoring software for new subtitles or as a tool to convert, transform, correct and refine existing subtitles. The most popular subtitle formats can be used. Preview of the subtitles in realtime or in design time, spell checking, translation mode and styles editing are some of the main features.Jubler 5.0.1
is licensed as Freeware
for the Windows operating system / platform without restrictions. Jubler is available to all software users as a free download (Freeware).
Jubler Virus and Malware Tests:
For security reasons, you should also check out the Jubler virus and malware test
that has been uploaded; additional Jubler screenshots may be available, too.