Programs and scripts

​SubDownloader	Python	Opensource
​Oscar	Delphi	Opensource class
​SolEol (Formerly ​HdP)	Realbasic	Source Available Upon Request
​MySE	Delphi	Opensource class
​FatRat Download Manager	C++	Opensource
​DreamLegendador	Realbasic	Opensource
​VrokSub	C#	???
​OpenSubtitles.org tools	Python	Opensource
​KDE download_opensubtitle	KDE Service menu, Python	Opensource
​GNOME download_opensubtitle	Gnome, Nautilus Script, Python	Opensource
​Subdl	command-line, Python	Opensource
​Subtitles Matcher Firefox extension	XUL	Opensource
​Subtitle Java Applet	Java	Opensource
​XBOX - OpenSubtitles – XBMC video plugin	Python	Opensource
​Zasyzacz napisow (win extension)	C++	???
​Periscope	CLI, Nautilus integration, python module, Python	Opensource
​LocalMovieDB	Python	Opensource
​Undertext for Mac OS X	Ruby	Opensource
​Subit	Python	Opensource
​MovieJukebox	Java	Opensource
​FileBot	Java	Opensource
​OpenSubtitles OSD - XBMC, Plex...script	Python	Opensource

Media Players, Media Centres and Codecs

​OpenSubtitles Player	Delphi	Closedsource
​Kantaris Media Player	C++	Opensource
​AllPlayer	Delphi	Closedsource
​Dzobias RAR Player	C++	Closedsource
​Media Player Classic	C++	Opensource
​SMPlayer	C++	Opensource
​Boxee	C++	Opensource
​BS.Player	C++	Closedsource
​BESTplayer	Delphi	Closedsource
​FFDshow	C++	Closedsource

if you know other program, feel free to add it.