I'd like to compile a list of all the computer programs out there that people can use for learning/reading seforim with. There are many of them now a days (and perhaps were some in the past that are no longer being supported.) However I'd like to keep a list to what is currently being supported and used now a days. It can be software or apps used on any or all of the following platforms: Windows, Mac, iOS (iPhone and iPad), Android, Blackberry, Internet-based (anything viewed or accessed through a web-browser). And whatever other platforms there might be out there right now running current seforim software.
Wikipedia has an extensive list of the Torah database software programs currently available.
This is a Wiki. Please feel free to add!