O

Name Country City
1 O.E. Ltd United Kingdom
2 O.I.C. Ltd United Kingdom
3 O.Sheen Software United Kingdom
4 Oasis Software United Kingdom
5 Oberon Group Ukraine Odessa
6 Ocean Software Ltd Atari Inc
7 Ocean Software Ltd United Kingdom Ocean Software Ltd speccyWiki
8 Ocean-Imagine Hellas Greece
9 OCTA Soft Hungary
10 Octopus Software United Kingdom
11 Odin Computer Graphics Ltd Paul McKenna
12 Odisea Software Spain
13 Odyssey Computing United Kingdom
14 Ofites Informatica Spain
15 Okoloko Engineering Software S. Okoloku
16 Old English Software R. Bingle
17 Oldrich Palenicek Czech Republic
18 Oldsoft Zdenek Stary
19 Oleg N. Cher Ukraine
20 Oleg Oursoft Russia
21 Olympic Software United Kingdom
22 Omega Games United Kingdom
23 Omega Group Russia St.Petersburg
24 Omega Hackers Club Russia Chelyabinsk Omega Hackers Club speccyWiki
25 Omega Hackers Group Russia Novocherkassk Omega Hackers Group speccyWiki
26 Omega Ltd
27 Omega Software [1] Cambridge Research
28 Omega Software [2] United Kingdom
29 Omega Software [3] Ireland
30 Omega Software GFX Jan Palenicek
31 Omega Software Ltd Alpha-Omega Software
32 Omega-Soft [1] United Kingdom
33 Omega-Soft [2] Germany
34 Omen Software Wordlight Ltd
35 Omicron Projects Spain
36 Omikron Software [1] Claus Jahn
37 Omikron Software [2] Czech Republic
38 OMK Software S.L. Spain
39 Omni Software United Kingdom
40 Omnisoft United Kingdom
41 Omycron Software Portugal
42 ON6LJ Software United Kingdom
43 One Week Productions United Kingdom
44 Oni Records United Kingdom
45 Online PLC
46 Onspec Software United Kingdom
47 OOPS Russia Odintsovo
48 OpalSoft United Kingdom
49 Opera Soft S.A. Spain
50 Optical Brothers Belarus Minsk
51 Optical Illusions United Kingdom
52 Optimal Group Russia
53 Optimus Software United Kingdom
54 Options International United Kingdom
55 Orange Enterprizes United Kingdom
56 Orange Software United Kingdom
57 Orbis Publishing Ltd United Kingdom
58 Origin Systems Inc United States
59 Original Computer Association Russia
60 Original Computers Associaton Russia
61 Original Soft Italy
62 Orijon Software Germany
63 Orin Soft Czech Republic
64 Orion [1] Illusion Dreams
65 Orion [2] Poland
66 Orion [3] Portugal
67 Orion Data Ltd United Kingdom
68 Orion Software [1] United Kingdom
69 Orion Software [2] Czech Republic
70 Orionsoft Spain
71 Orpheus Ltd United Kingdom
72 Orwin Software Michael Orwin
73 Oscar & Spilberg
74 Oscar Soft Spain
75 Oscar Systems United Kingdom
76 osh Group Russia
77 OSSoft United Kingdom
78 Outland Corp Moldova Kishinev
79 Outlaw Palace Video Group
80 Outlet Chezron Software
81 Outsiders
82 Oversun Frendship Russia Severodvinsk
83 Oxbridge Technology Ltd United Kingdom
84 Oxford Computer Publications Ltd
85 Oxford Computer Publishing Oxford Computer Publications Ltd
86 Oxford Computer Systems United Kingdom
87 Oxford Digital Enterprises Empire Interactive
88 Oxford Mobius Nigel Lea
89 Oxford Software Group United Kingdom
90 Oxford Technologies United Kingdom
91 Oxygen Software United Kingdom
92 Oz Software United Kingdom