FreeMint, MultiTOS, and a few more obscure OSes are all successors to TOS the proprietary operating system of the Atari ST computer.
 Later models of the ST Computer were called the TT and the Falcon.
 TOS stands for The Operating System or Tramiel Operating System, as Jack Tramiel was the owner of Atari.
 GEMDOS itself was a near clone of DOS, the IBM PC OS.
 This was most visible to users in the 8.3 character file naming system.
 Like all personal computer operating systems of the day, TOS was single tasking.
 GEM, the graphical user interface, was licensed from Digital Research and was not included in Apple's lawsuit against DR, thus the Macintosh like appearance and ways of doing things remained on Atari computers.
 As time went on, the big goal for the ST within and without Atari was to have a multitasking TOS.
Transarctica (or Arctic Baron) is a 1993 computer game made by the French company Silmarils for the Amiga and ported to the PC, Atari ST, Macintosh and Atari Falcon.
Gravon: Real Virtuality is a 1995 video game developed by Suma.
 The game originally was released for Atari Falcon and later ported to Microsoft Windows in 2013 and packed as a bonus game to "Take On Mars".
 The famous game "" is considered to be a spiritual successor to "Gravon".
Cho Ren Sha 68K (超連射68K ) "Ultra Fire 68K" is a vertical-scrolling Dōjin Shoot 'em up developed by Koichi Yoshida, who goes by the nickname Famibe no Yosshin with music composed by Ruzarin Kashiwagi, who also goes by the nickname Loser.
 It was first released in 1995 for the Sharp X68000 but in 2001, a port was released for Microsoft Windows.
 In 2005, a updated version of the Windows port was released with an added hard difficulty, while fixing some bugs from the original version.
 In 2015, a port was released for the Atari Falcon 030 computer.
 In 2017, another updated version was released for the Windows port.
ERE Informatique was one of the first French video game companies, founded in 1981 by Philippe Ulrich and Emmanuel Viau.
 The company hired freelance game programmers that received royalties for their creations.
 Initially, the company published titles for the Amstrad CPC, Spectrum and Oric home computers.
 In 1984 they published their first national hit, a flight simulator created by Marc André Rampon: "Intercepteur Cobalt" for Sinclair ZX81 and Spectrum, also known under the name of "Mission Delta" for Oric, Amstrad and Thomson MO5.
 Rampon also acquired some shares of the company owned by Viau and established the company's first distribution network.
The Atari Falcon030 Computer System is a personal computer released by Atari Corporation in 1992.
 The machine is based on a Motorola 68030 main CPU, and had a Motorola 56000 digital signal processor, a feature which distinguished it from most other microcomputers of the era.
The Thomson MO5 is a home computer introduced in France in 1984 to compete against systems such as the ZX Spectrum and Commodore 64.
 At the same time, Thomson also released the up-market Thomson TO-7/70 machine.
 The MO5 was not sold in vast quantities outside France and was largely discontinued in favour of the improved Thomson MO6 in 1986.
 MO5s were also used as educational tools in French schools for a period.
Wizball is a computer game written by Jon Hare and Chris Yates (who together formed the company Sensible Software) and released in 1987 originally for the Commodore 64 and later in the year for the ZX Spectrum and Amstrad CPC.
 Versions for the Amiga and Atari ST were also released in the following year.
 Wizball was also released for PC compatibles (CGA) and the French Thomson MO5 8 bit computer.
Silmarils was a French computer game software company founded in 1987 by Louis-Marie and André Rocques.
 It produced games for PC, Amiga, Amstrad CPC, Macintosh, Atari ST and Atari Falcon.
The Motorola DSP56000 (also known as 56K) is a family of digital signal processor (DSP) chips produced by Motorola Semiconductor (later known as Freescale Semiconductor, now acquired by NXP) starting in 1986 and is still being produced in more advanced models in the 2010s.
 The 56k series was quite popular for a time in a number of computers, including the NeXT, Atari Falcon (56001), and SGI Indigo workstations. Upgraded 56k versions are still used today in audio gear, radars, communications devices (like mobile phones) and various other embedded DSP applications.
 The 56000 was also used as the basis for the updated 96000, which was not commercially successful.

Question: What are both Thomson MO5 and Atari Falcon?
Answer: computer