Consoles :

Colecovision (1982) : Does not have the Conveyor Belt Stage, but a rare "Super" offering does. The Elevator Stage does not have the Springs; it has one or two Fireballs on Donkey Kong's platform instead.

Mattel Intellivision (1982) : Has only the Ramp and Rivet Stages.

Atari 2600 (1983) : Has only the Ramp and Rivet Stages.

Atari XEGS

Atari 7800 (1988) : Does not have the Conveyor Belt Stage.

Nintendo Famicom (1986) : Does not have the Conveyor Belt Stage.

Nintendo Famicom (1988, "Donkey Kong Classics") : Nintendo Famicom's 1986 offerings of both "Donkey Kong" and "Donkey Kong Jr." in one cartridge.

Nintendo Game Boy (1994) : features multiple stage settings, starting with the original four.

Nintendo 64 (1999, "Donkey Kong 64") : unlockable extra.

Nintendo Game Boy Advance (2002, e-Reader Series)

Nintendo Game Boy Advance (2004, Famicom Mini Series) : Identical to Nintendo Famicom's 1986 offering; does not have the Conveyor Belt Stage.

Nintendo Famicom Disk : Does not have the Conveyor Belt Stage.

Nintendo Wii (2006, "Virtual Console")
Computers :
Tandy Color Computer (1982, "Dunkey Munkey")
Tandy Color Computer (1982, "Donkey King")
Tandy Color Computer (1983, "The King")
Tandy Color Computer (1983, "Monkey Kong")
PC [Booter] (1983)
PC [Booter] (1983, "Gorilla Gorilla", a part of the "Friendlyware PC Arcade" suite) : Uses ASCII characters for graphics. Offers 3 different types of games: Game 1 is the traditional - You start on the Ramp Stage. Game 2 - You start on the Rivet Stage. Game 3 - You start on the Elevator Stage. The Conveyor Belt Stage is omitted.
Commodore VIC-20 (1983)

Apple II (1983)
Atari 800 (1983)
Commodore C64 (1983)
TI99/4A (1983, "Donkey Kong", Atarisoft)
BBC B (1984, "Killer Gorilla" - Micropower)
Acorn Electorn (1984, "Killer Gorilla" - Micropower)

Amstrad CPC (1986)
Sinclair ZX Spectrum (1983, "Kong" - Ocean)
Sinclair ZX-Spectrum (1986, "Donkey Kong" -Ocean) : is slightly closer to the original Arcade game than Ocean's earlier offering from 1983, "Kong". Making their 1986 version probably the second worst conversion of Donkey Kong ever sold!
MSX
PC [MS-DOS] (1997, "ChampKong" - CHAMProgramming)
Others :
VFD handheld game (1982) released by Coleco.
LCD handheld game (Game & Watch) released by Nintendo : double screen.