This site is currently under reconstruction, so many of these links will not work. I apologise for the inconvenience.
This is not an exaustive list of all brands and companies, however these are all those which I have seen sold or listed for sale.
Add-Index
Addac
Addi
Addi Cosmos - see Addi
Addiator
Addicalco
Addimult
Addo
Addometer
Aderes
Adwel
Alfa
Allen
Alpina
Anita
Antares
Archimedes
Aristo
Astra
Austria
Badenia
Baldwin
Barrett
BriCal
Britannic
Brunsviga
BUG - see Addi
Bunzel
Burkhardt
Burroughs
Busicom
Comptator
Comptometer
Contex
Correntator
Cosmos
Cotina AG Mauren - see Curta
Dacometer
Dactyle
Dalton
Diehl
Dixi
Euclid
Euklid
Everest
Feliks - see Felix
Felix
Friden
Gauss
Grimme, Natalis & Co
Hamann
Hannovera
Herzstark
Heureka
Kienzle
Lightning
Lipsia
Marchant
Mauser-Addi
Melitta
Mercedes
Mercedes Euklid - see Mercedes
Millionaire
Millionar - see Millionaire
Mira
Monroe
Muldivo Mentor - See Walther
Multifix
Multo
Nippon
Nisa
Numeria
Odhner
Olivetti
Olympia
Pascal
Peerless
Plus
Precisa
Produx
Rapid
Rema
Remington
Resulta
Rheinmetall
Rokli
Saxonia
Schubert
Smith Corona
Standard
Stima
Sumlock
Texas Instruments
Thales
Thomas Arithmometre
Tiger
TIM
Totalia
Triumphator
Underwood
Vaucanson
Victor