MKVToolNix is a set of tools to create, alter and inspect Matroska files under Linux, other Unices and Windows.
https://mkvtoolnix.download/index.html
Audio/Video Applications
tinyMediaManager 4.2.7
tinyMediaManager is a media management tool written in Java/Swing. It is written to provide metadata for the Kodi Media Center (formerly known as XBMC), MediaPortal and Plex media server. Due to the fact that it is written in Java, tinyMediaManager will run on Windows, Linux and macOS (and possible more OS).
https://www.tinymediamanager.org
Kodi v19.4
Kodi is an award-winning free and open source (GPL) software media player and entertainment hub that can be installed on Linux, OSX, Windows, iOS, tvOS and Android. It is designed around a “10-foot user interface” for use with televisions and remote controls.
Users can play and view most videos, music, podcasts, games and other digital media files from local and network storage media and the internet.
https://kodi.tv
XMedia Recode 3.5.5.5
XMedia Recode can convert almost all known audio and video formats.
https://www.xmedia-recode.de/en/
PlayerFab 7 (former DVDFab Player) 7.0.0.5 (32/64 bit)
PlayerFab makes it accessible for users to playback local videos, DVD/Blu-ray/UHD discs, and videos from Amazon and Netflix.
https://www.dvdfab.cn/playerfab.htm
MakeMKV 1.16.7 Beta
MakeMKV is your one-click solution to convert video that you own into free and patents-unencumbered format that can be played everywhere. MakeMKV is a format converter, otherwise called “transcoder”. It converts the video clips from proprietary (and usually encrypted) disc into a set of MKV files, preserving most information but not changing it in any way. The MKV format can store multiple video/audio tracks with all meta-information and preserve chapters. There are many players that can play MKV files nearly on all platforms, and there are tools to convert MKV files to many formats, including DVD and Blu-ray discs.
https://www.makemkv.com
XMedia Recode 3.5.5.4
XMedia Recode can convert almost all known audio and video formats.
https://www.xmedia-recode.de/en/
tinyMediaManager 4.2.6
tinyMediaManager is a media management tool written in Java/Swing. It is written to provide metadata for the Kodi Media Center (formerly known as XBMC), MediaPortal and Plex media server. Due to the fact that it is written in Java, tinyMediaManager will run on Windows, Linux and macOS (and possible more OS).
https://www.tinymediamanager.org
PlayerFab 7 (former DVDFab Player) 7.0.0.4 (32/64 bit)
Characterized by an all-around service, PlayerFab makes it accessible for users to playback local videos, DVD/Blu-ray/UHD discs, and videos from Amazon, Netflix, Tubi, Peacock.
https://www.dvdfab.cn/playerfab.htm
XMedia Recode 3.5.5.3
XMedia Recode can convert almost all known audio and video formats.
https://www.xmedia-recode.de/en/