Added Zdoom and Freedoom:

also minor grammar here and there. and other suggesting apps from the issues section.

README.md

@@ -146,6 +146,7 @@
 - [![Open-Source Software][OSS Icon]](https://github.com/Soundnode/soundnode-app) [Soundnode](http://www.soundnodeapp.com/) - An opensource SoundCloud app for desktop.
 - [![Open-Source Software][OSS Icon]](https://github.com/devinhalladay/spotio) [Spotio](https://github.com/devinhalladay/spotio) - A Rdio-inspired light theme for the Spotify desktop app.
 - [![Open-Source Software][OSS Icon]](https://github.com/tomahawk-player/tomahawk) [Tomahawk](https://www.tomahawk-player.org/) - A new kind of music player that invites all your streams, downloads, cloud music storage, playlists, radio stations and more.
+- [![Open-Source Software][OSS Icon]](https://github.com/VCVRack/Rack) [VCV Rack](https://vcvrack.com/) - An open-source virtual modular synthesizer.
 - [![Open-Source Software][OSS Icon]](https://github.com/needle-and-thread/vocal) [Vocal](http://vocalproject.net/) - Podcast client for the modern desktop.
 - [![Open-Source Software][OSS Icon]](https://github.com/yktoo/indicator-sound-switcher) [Yktoo Sound Switcher Indicator](https://yktoo.com/en/software/indicator-sound-switcher) - Sound input/output selector indicator for Ubuntu/Unity.
 
@@ -482,10 +483,12 @@
 
 #### FPS
 - [![Open-Source Software][OSS Icon]](https://gitlab.com/groups/xonotic) [ChaosEsqueAnthology Disc 1](https://sourceforge.net/projects/chaosesqueanthology/) [ChaosEsqueAnthology Disc 2](https://sourceforge.net/projects/chaosesqueanthologyvolume2/) - A modification of Xonotic which included extended weapons, maps, vehicles, buildable buildings, mounted weapons, spell casting, monsters, player characters, textures, and game mode (such as colorwar (think liquidwar))
+- [![Open-Source Software][OSS Icon]](https://github.com/freedoom/freedoom) [Freedoom](https://freedoom.github.io/) - The Freedoom project aims to create a complete free content game based on the Doom engine.
 - [![Open-Source Software][OSS Icon]](https://github.com/red-eclipse/base) [Red Eclipse](https://redeclipse.net/) - Red Eclipse is a fun-filled new take on the first person arena shooter, which lends itself toward a balanced gameplay, with a general theme of agility in a variety of environments.
 - ![Open-Source Software][OSS Icon] [Urban Terror](http://www.urbanterror.info) - A "Hollywood" tactical shooter - realism based, but the motto is "fun over realism".
 - [![Open-Source Software][OSS Icon]](https://gitlab.com/groups/xonotic) [Xonotic](http://www.xonotic.org/) - Arena shooter inspired by Unreal Tournament and Quake.
 - [![Open-Source Software][OSS Icon]](https://bitbucket.org/Torr_Samaho/zandronum) [Zandronum](http://zandronum.com/) - Leading the way in newschool multiplayer Doom online.
+- [![Open-Source Software][OSS Icon]](https://github.com/coelckers/gzdoom) [Zdoom](https://zdoom.org/index) - ZDoom is a source port for the modern era, supporting current hardware and operating systems and sporting a vast array of user options.
 
 #### Gaming Applications
 - [![Open-Source Software][OSS Icon]](https://github.com/itchio/itch) [itch](https://itch.io/) - The itch.io app. All of your downloads are kept in a single place and are automatically updated. Plenty of free games.
@@ -495,12 +498,14 @@
 - [Steam](steampowered.com) - Gaming store, which opens the gates to many games.
 - [![Open-Source Software][OSS Icon]](https://dl.winehq.org/wine/source/) [Wine](https://www.winehq.org/) - Wine ("Wine Is Not an Emulator") is a compatibility layer capable of running Windows applications on Linux, quality depends from game to game.
 
-#### Machine emulators
+#### Machine Emulators
 - [![Open-Source Software][OSS Icon]](https://github.com/dolphin-emu/dolphin) [Dolphin Emulator](https://dolphin-emu.org/) - Dolphin is a GameCube / Wii emulator, allowing you to play games for these two platforms on PC with improvements.
 - [![Open-Source Software][OSS Icon]](https://sourceforge.net/p/fuse-emulator/fuse/ci/master/tree/) [Fuse](http://fuse-emulator.sourceforge.net/) - Fuse (the Free Unix Spectrum Emulator) is a ZX Spectrum emulator for Unix.
+- [![Open-Source Software][OSS Icon]](https://github.com/GNOME/gnome-video-arcade) [GNOME Video Arcade](https://wiki.gnome.org/action/show/Apps/GnomeVideoArcade?action=show&redirect=GnomeVideoArcade) - GNOME Video Arcade is a simple Mame frontend for any freedesktop.org compliant desktop environment.
 - [![Open-Source Software][OSS Icon]](https://gitlab.com/higan/higan) [Higan](https://byuu.org/emulation/higan/) - Higan is a multi-system emulator that supports emulating a huge number of different systems including: NES, SNES, GameBoy, GameBoy Color, Gameboy Advance, NEC PC Engine, Sega Master System, and more. Here is a guide to install it on Linux [Higan Installation](https://higan.readthedocs.io/en/stable/install/linux/)
 - [![Open-Source Software][OSS Icon]](https://github.com/mamedev/mame) [MAME](http://mamedev.org/) - MAME is an Arcade Cabinet emulator that strives for accuracy, and can play a huge number of different arcade games.
 - [![Open-Source Software][OSS Icon]](https://github.com/0ldsk00l/nestopia) [nestopia](http://0ldsk00l.ca/nestopia/) - nestopia is a Nintendo Entertainment System/Famicon emulator.
+- [![Open-Source Software][OSS Icon]](https://sourceforge.net/projects/qmc2/files/qmc2/) [qmc2](https://qmc2.batcom-it.net/) - QMC2 is the successor to QMamecat, it is a gui for MAME and a ROM manager.
 - [![Open-Source Software][OSS Icon]](https://github.com/snes9xgit/snes9x) [Snes9x](http://www.snes9x.com/) - Is a multiplatform Super Nintendo Entertainment System emulator that has gone through many incarnations, but is still being actively developed.
 - [![Open-Source Software][OSS Icon]](https://github.com/stella-emu/stella) [Stella](https://stella-emu.github.io/) - is an Atari 2600 Emulator that is multiplatform.
 - [![Open-Source Software][OSS Icon]](https://github.com/visualboyadvance-m/visualboyadvance-m) [Visual Boy Advance-M](http://vba-m.com/) - A Gameboy and Gameboy Advance Emulator that is still undergoing active development and can even emulate a system link between two gameboys.

README_es-ES.md

@@ -147,6 +147,7 @@
 - [![Open-Source Software][OSS Icon]](https://github.com/Soundnode/soundnode-app) [Soundnode](http://www.soundnodeapp.com/) - un aplicacion código abierto para SoundCloud.
 - [![Open-Source Software][OSS Icon]](https://github.com/devinhalladay/spotio) [Spotio](https://github.com/devinhalladay/spotio) - un tema inspirado en Rdio para la aplicación del applicacion Spotify oficial.
 - [![Open-Source Software][OSS Icon]](https://github.com/tomahawk-player/tomahawk) [Tomahawk](https://www.tomahawk-player.org/) - un nuevo reproductor de medios que agrega radio por Internet, descargas, almacenamiento de música en la nube, listas de reproducción de música y mucho más.
+- [![Open-Source Software][OSS Icon]](https://github.com/VCVRack/Rack) [VCV Rack](https://vcvrack.com/) - Un sintetizador modular virtual de código abierto.
 - [![Open-Source Software][OSS Icon]](https://github.com/needle-and-thread/vocal) [Vocal](http://vocalproject.net/) - Un cliente para podcastos para el moderno escritorio.
 
 
@@ -477,10 +478,12 @@ La versión de la comunidad es un software de código abierto.
 
 #### Videojuego de disparos en primera persona
 - [![Open-Source Software][OSS Icon]](https://gitlab.com/groups/xonotic) [ChaosEsqueAnthology Disc 1](https://sourceforge.net/projects/chaosesqueanthology/) [ChaosEsqueAnthology Disc 2](https://sourceforge.net/projects/chaosesqueanthologyvolume2/) - Una modificación de Xonotic que incluía armas extendidas, mapas, vehículos, edificios construibles, armas montadas, lanzamiento de hechizos, monstruos, personajes de jugadores, texturas y modo de juego (como colorwar (piense en guerra líquida))
+- [![Open-Source Software][OSS Icon]](https://github.com/freedoom/freedoom) [Freedoom](https://freedoom.github.io/) - Freedoom es un puerto de código abierto de archivos de juegos doom, que pronto tendrá un motor de dooms de código abierto.
 - [![Open-Source Software][OSS Icon]](https://github.com/red-eclipse/base) [Red Eclipse](https://redeclipse.net/) - Red Eclipse es un entretenido juego de tiro en primera persona. Tiene un tema de agilidad y velocidad.
 - [![Open-Source Software][OSS Icon]] [Urban Terror](http://www.urbanterror.info) - Un juego de disparos tácticos que se basa en el realismo, pero no siempre.
 - [![Open-Source Software][OSS Icon]](https://gitlab.com/groups/xonotic) [Xonotic](http://www.xonotic.org/) - Es un juego inspirado en "Unreal Tournament" y "Quake".
 - [![Open-Source Software][OSS Icon]](https://bitbucket.org/Torr_Samaho/zandronum) [Zandronum](http://zandronum.com/) - Un juego que es como "Doom", pero en línea y con muchas más características.
+- [![Open-Source Software][OSS Icon]](https://github.com/coelckers/gzdoom) [Zdoom](https://zdoom.org/index) - Zdoom es un puerto de origen de condena moderno que es de código abierto y es muy personalizable.
 
 #### Aplicaciones de juego
 - [![Open-Source Software][OSS Icon]](https://github.com/itchio/itch) [itch](https://itch.io/) - Una mercado de juegos que centraliza tus descargas y las actualiza automáticamente. Un montón de juegos gratuitos están disponibles.
@@ -490,13 +493,15 @@ La versión de la comunidad es un software de código abierto.
 - [Steam](steampowered.com) - Una tienda de juegos donde puedes comprar juegos en línea.
 - [![Open-Source Software][OSS Icon]] [Wine](https://www.winehq.org/) - Wine ("Wine Is Not an Emulator") es una capa de compatibilidad que permite que las aplicaciones de Windows funcionen en Linux. Los resultados dependen del programa que se esté utilizando.
 
-#### Emulador de videoconsola
+#### Emulador de videoconsola e plataformas
 - [![Open-Source Software][OSS Icon]](https://github.com/dolphin-emu/dolphin) [Dolphin Emulator](https://dolphin-emu.org/) - Dolphin es un emulador de Gamecube / Wii que te permite jugar estos juegos en Linux.
 - [![Open-Source Software][OSS Icon]](https://sourceforge.net/p/fuse-emulator/fuse/ci/master/tree/) [Fuse](http://fuse-emulator.sourceforge.net/) - Fuse es un emulador de espectro ZX para Linux.
+- [![Open-Source Software][OSS Icon]](https://github.com/GNOME/gnome-video-arcade) [GNOME Video Arcade](https://wiki.gnome.org/action/show/Apps/GnomeVideoArcade?action=show&redirect=GnomeVideoArcade) - GNOME Video Arcade is a simple Mame frontend for any freedesktop.org compliant desktop environment.
 - [![Open-Source Software][OSS Icon]](https://gitlab.com/higan/higan) [Higan](https://byuu.org/emulation/higan/) - Higan
 es un emulador multiplataforma para estas consolas: NES, SNES, GameBoy, GameBoy Color, Gameboy Advance, NEC PC Engine, Sega Master System y más. Esta es una guía para instalarlo en inglés. [Instalación de Higan en inglés](https://higan.readthedocs.io/en/stable/install/linux/)
 - [![Open-Source Software][OSS Icon]](https://github.com/mamedev/mame) [MAME](http://mamedev.org/) - MAME es un emulador de arcade que puede jugar muchos juegos antiguos de arcade.
 - [![Open-Source Software][OSS Icon]](https://github.com/0ldsk00l/nestopia) [nestopia](http://0ldsk00l.ca/nestopia/) - nestopia es un emulador de Nintendo.
+- [![Open-Source Software][OSS Icon]](https://sourceforge.net/projects/qmc2/files/qmc2/) [qmc2](https://qmc2.batcom-it.net/) - QMC2 is the successor to QMamecat, it is a gui for MAME and a ROM manager.
 - [![Open-Source Software][OSS Icon]](https://github.com/snes9xgit/snes9x) [Snes9x](http://www.snes9x.com/) - Snes9x es un emulador de SNES multiplataforma que existe desde hace mucho tiempo.
 - [![Open-Source Software][OSS Icon]](https://github.com/stella-emu/stella) [Stella](https://stella-emu.github.io/) - Stella es un emulador ATARI 2600 que está disponible en múltiples plataformas.
 - [![Open-Source Software][OSS Icon]](https://github.com/visualboyadvance-m/visualboyadvance-m) [Visual Boy Advance-M](http://vba-m.com/) - Un emulador para Gameboy y Gameboy Advance, que también puede simular dos sistemas de enlace.

README_fr-FR.md

@@ -148,6 +148,7 @@
 - [![Open-Source Software][OSS Icon]](https://github.com/Soundnode/soundnode-app) [Soundnode](http://www.soundnodeapp.com/) - An opensource SoundCloud app for desktop.
 - [![Open-Source Software][OSS Icon]](https://github.com/devinhalladay/spotio) [Spotio](https://github.com/devinhalladay/spotio) - A Rdio-inspired light theme for the Spotify desktop app.
 - [![Open-Source Software][OSS Icon]](https://github.com/tomahawk-player/tomahawk) [Tomahawk](https://www.tomahawk-player.org/) - A new kind of music player that invites all your streams, downloads, cloud music storage, playlists, radio stations and more.
+- [![Open-Source Software][OSS Icon]](https://github.com/VCVRack/Rack) [VCV Rack](https://vcvrack.com/) - An open-source virtual modular synthesizer.
 - [![Open-Source Software][OSS Icon]](https://github.com/needle-and-thread/vocal) [Vocal](http://vocalproject.net/) - Podcast client for the modern desktop.
 - [![Open-Source Software][OSS Icon]](https://github.com/yktoo/indicator-sound-switcher) [Yktoo Sound Switcher Indicator](https://yktoo.com/en/software/indicator-sound-switcher) - Sound input/output selector indicator for Ubuntu/Unity.
 
@@ -485,10 +486,12 @@
 
 #### FPS
 - [![Open-Source Software][OSS Icon]](https://gitlab.com/groups/xonotic) [ChaosEsqueAnthology Disc 1](https://sourceforge.net/projects/chaosesqueanthology/) [ChaosEsqueAnthology Disc 2](https://sourceforge.net/projects/chaosesqueanthologyvolume2/) - A modification of Xonotic which included extended weapons, maps, vehicles, buildable buildings, mounted weapons, spell casting, monsters, player characters, textures, and game mode (such as colorwar (think liquidwar))
+- [![Open-Source Software][OSS Icon]](https://github.com/freedoom/freedoom) [Freedoom](https://freedoom.github.io/) - The Freedoom project aims to create a complete free content game based on the Doom engine.
 - [![Open-Source Software][OSS Icon]](https://github.com/red-eclipse/base) [Red Eclipse](https://redeclipse.net/) - Red Eclipse is a fun-filled new take on the first person arena shooter, which lends itself toward a balanced gameplay, with a general theme of agility in a variety of environments.
 - ![Open-Source Software][OSS Icon] [Urban Terror](http://www.urbanterror.info) - A "Hollywood" tactical shooter - realism based, but the motto is "fun over realism".
 - [![Open-Source Software][OSS Icon]](https://gitlab.com/groups/xonotic) [Xonotic](http://www.xonotic.org/) - Arena shooter inspired by Unreal Tournament and Quake.
 - [![Open-Source Software][OSS Icon]](https://bitbucket.org/Torr_Samaho/zandronum) [Zandronum](http://zandronum.com/) - Leading the way in newschool multiplayer Doom online.
+- [![Open-Source Software][OSS Icon]](https://github.com/coelckers/gzdoom) [Zdoom](https://zdoom.org/index) - ZDoom is a source port for the modern era, supporting current hardware and operating systems and sporting a vast array of user options.
 
 #### Gaming Applications
 - [![Open-Source Software][OSS Icon]](https://github.com/itchio/itch) [itch](https://itch.io/) - The itch.io app. All of your downloads are kept in a single place and are automatically updated. Plenty of free games.
@@ -501,9 +504,11 @@
 #### Machine emulators
 - [![Open-Source Software][OSS Icon]](https://github.com/dolphin-emu/dolphin) [Dolphin Emulator](https://dolphin-emu.org/) - Dolphin is a GameCube / Wii emulator, allowing you to play games for these two platforms on PC with improvements.
 - [![Open-Source Software][OSS Icon]](https://sourceforge.net/p/fuse-emulator/fuse/ci/master/tree/) [Fuse](http://fuse-emulator.sourceforge.net/) - Fuse (the Free Unix Spectrum Emulator) is a ZX Spectrum emulator for Unix.
+- [![Open-Source Software][OSS Icon]](https://github.com/GNOME/gnome-video-arcade) [GNOME Video Arcade](https://wiki.gnome.org/action/show/Apps/GnomeVideoArcade?action=show&redirect=GnomeVideoArcade) - GNOME Video Arcade is a simple Mame frontend for any freedesktop.org compliant desktop environment.
 - [![Open-Source Software][OSS Icon]](https://gitlab.com/higan/higan) [Higan](https://byuu.org/emulation/higan/) - Higan is a multi-system emulator that supports emulating a huge number of different systems including: NES, SNES, GameBoy, GameBoy Color, Gameboy Advance, NEC PC Engine, Sega Master System, and more. Here is a guide to install it on Linux [Higan Installation](https://higan.readthedocs.io/en/stable/install/linux/)
 - [![Open-Source Software][OSS Icon]](https://github.com/mamedev/mame) [MAME](http://mamedev.org/) - MAME is an Arcade Cabinet emulator that strives for accuracy, and can play a huge number of different arcade games.
 - [![Open-Source Software][OSS Icon]](https://github.com/0ldsk00l/nestopia) [nestopia](http://0ldsk00l.ca/nestopia/) - nestopia is a Nintendo Entertainment System/Famicon emulator.
+- [![Open-Source Software][OSS Icon]](https://sourceforge.net/projects/qmc2/files/qmc2/) [qmc2](https://qmc2.batcom-it.net/) - QMC2 is the successor to QMamecat, it is a gui for MAME and a ROM manager.
 - [![Open-Source Software][OSS Icon]](https://github.com/snes9xgit/snes9x) [Snes9x](http://www.snes9x.com/) - Is a multiplatform Super Nintendo Entertainment System emulator that has gone through many incarnations, but is still being actively developed.
 - [![Open-Source Software][OSS Icon]](https://github.com/stella-emu/stella) [Stella](https://stella-emu.github.io/) - is an Atari 2600 Emulator that is multiplatform.
 - [![Open-Source Software][OSS Icon]](https://github.com/visualboyadvance-m/visualboyadvance-m) [Visual Boy Advance-M](http://vba-m.com/) - A Gameboy and Gameboy Advance Emulator that is still undergoing active development and can even emulate a system link between two gameboys.