Belle Nuit Subtitler
Subtitler is now open source and free. Download page

News
29.3.2016 Belle Nuit Subtitler goes open source Belle Nuit Montage announces the immediate end of sale of our software Belle Nuit Subtitler. The last build of the software is now available as a free download and the source code of the program is released under the GNU Lesser General Public License. Users with current licenses will get email support until 31.3.2017.
23.1.2013 Subtitler:Subtitlers On this page, subtitlers can offer their services
14.9.2012: Subtitler:Beta Beta 2.1 started
11.9.2012: Subtitler and DVDSP on Lion
2.8.2012: Subtitler and Mountain Lion
15.6.2012: Belle Nuit Montage releases Subtitler 2.0
15.6.2012: Belle Nuit Montage drops Windows support for Subtitler
11.6.2012: New workflow to export movie with burnt in subtitles Subtitler:ffmpegX
26.5.2012: IndieWire: How Do You Subtitle a Movie at Cannes? Henri Behar Explains All
Excellent article on subtitling: "The subtitle can have maximum two lines and 40 characters -- less than one tweet."
http://www.indiewire.com/article/how-do-you-subtitle-a-movie-at-cannes-master-subtitler-henri-behar-explains-all?