HandBrake

HandBrake is a free and open-source transcoder for digital video files, originally developed in 2003 by Eric Petit (a.k.a. "titer" from his SVN repository username) to make ripping a film from a DVD t...
Language(s): Objective-C, C, C#
Operating system(s): Linux, Mac OS, Windows
License: GNU GPLv2 (Third-party components have their own licenses)

VLC media player

VLC is a free and open source cross-platform multimedia player and framework that plays most multimedia files as well as DVDs, Audio CDs, VCDs, and various streaming protocols. VLC has the most co...
Language(s): C, C++, Objective-C
Operating system(s): Windows, Windows Store, Windows Mobile, Apple Platforms, Mac OS X, iOS, Apple TV, GNU/Linux, Debian GNU/Linux, Ubuntu, Mint, openSUSE, Gentoo Linux, Fedora, Arch Linux, Slackware Linux, ALT Linux, Red Hat Enterprise Linux, Android, Chrome OS, FreeBSD, NetBSD, OpenBSD, , Solaris, QNX, Syllable, OS/2
License: GNU General Public License Version 2