If you tend to spend hours looking for subtitles around a bazillion webpages, this desktop application will get them for you using specific search parameters.
It works in a really simple way: you just have to access the program and choose the video you want subtitles for from the directory to the left, then OpenSubdownloader takes care of finding them automatically.
The program can find subtitles within the video file or using the movie or series title in the search bar. Each of these search methods has its own tab.
Another good thing about OpenSubdownloader is that any user can also contribute by uploading subtitles so the community has access to more and better resources.