| 1 | I.E.C. Software | Reino Unido | | |
| 2 | I.S.P. Marketing Ltd | | | |
| 3 | I.W.S. | Reino Unido | | |
| 4 | Ian Carroll | Reino Unido | | |
| 5 | Ian Cox | Reino Unido | | |
| 6 | Ian Williams | Reino Unido | | |
| 7 | Iber | | | |
| 8 | Iber Software | | International Business S.A. | | | | |
| 9 | Iber Software | España | | |
| 10 | Iber' | | | |
| 11 | Iberofon S.A. | España | | |
| 12 | IBSA | | International Business S.A. | | | | |
| 13 | IC Software | | Ian Carroll | | | | |
| 14 | IC&D Ltd | | | |
| 15 | IC&D Ltd | | | |
| 16 | Ice Cool Coders | Reino Unido | | |
| 17 | Ice Group | Russia | Димитровград | |
| 18 | Ice Group | Russia | | |
| 19 | ICE Software | Reino Unido | | |
| 20 | ICL | Reino Unido | | |
| 21 | Icon | | | |
| 22 | Icon & Grand Slam | | | |
| 23 | Icon Design | | | |
| 24 | Icon Design Ltd | Reino Unido | | |
| 25 | Icon Designs | Reino Unido | | |
| 26 | Icon Designs | Reino Unido | | |
| 27 | Icon Software Ltd | Reino Unido | | |
| 28 | Icon;Melbourne House | | | |
| 29 | Ideal Software | España | | |
| 30 | Idealogic S.A. | España | | |
| 31 | Idem | | | |
| 32 | Idem Soft | Argentina | | |
| 33 | Idem Soft | España | | |
| 34 | Idi Productions | | EMM Information Systems GmbH | | | | |
| 35 | IDL | Reino Unido | | |
| 36 | IE Applications Ltd | Reino Unido | | |
| 37 | IG Programs | Reino Unido | | |
| 38 | Igneous 1 Software | Reino Unido | | |
| 39 | IJK Software Ltd | | BBC | | | | |
| 40 | Ijskosoft | | | |
| 41 | IKO & RGSoft | Slovakia | | |
| 42 | IKS | Poland | | |
| 43 | Il Mio Computer | | Istituto Geografico De Agostini S.p.A. | | | | |
| 44 | Illusion | Poland | | |
| 45 | Illusion Dreams | Russia | | |
| 46 | Illusion Dreams | Russia | | |
| 47 | Illusion Group | Poland | | |
| 48 | Illusion Group | Poland | | |
| 49 | Illusion Software Ltd | Reino Unido | | |
| 50 | Illusion Works | Russia | | |
| 51 | Illusion Works | Russia | | |
| 52 | IMA Soft | Russia | | |
| 53 | Image Crew | Russia | Киров |  |
| 54 | Image Crew | Russia | | |
| 55 | Image Design | Reino Unido | | |
| 56 | Image Software Ltd | Reino Unido | | |
| 57 | Image Systems | Reino Unido | | |
| 58 | Image Works | | Mirrorsoft Ltd | | | | |
| 59 | Image Works | | | |
| 60 | Image Works-91 | | | |
| 61 | Images | | | |
| 62 | Images Ltd | | Images Software Ltd | | | | |
| 63 | Images Ltd | Reino Unido | | |
| 64 | Images Software Ltd | | | |
| 65 | Imagesoft | Reino Unido | | |
| 66 | Imagic | | | |
| 67 | Imagination Studios | Lithuania | Вильнюс | |
| 68 | Imagine | Russia | | |
| 69 | Imagine Software Ltd | | Atari Inc | | | | |
| 70 | Imagine Software Ltd | | | |
| 71 | Imagine Software Ltd-86 | | | |
| 72 | Imagine Software Ltd-88 | | | |
| 73 | Imagine Software Ltd-89 | | | |
| 74 | Imagitec Design Ltd | | | |
| 75 | Imagitec Design Ltd | | Gremlin Interactive | | | | |
| 76 | Impact Creative Group | Russia | | |
| 77 | Impact Software [1] | Reino Unido | | |
| 78 | Impact Software [2] | Reino Unido | | |
| 79 | Impact Software [3] | Reino Unido | | |
| 80 | Impact Software [4] | Reino Unido | | |
| 81 | Imperial Soft | España | | |
| 82 | Imperial Software | Reino Unido | | |
| 83 | Impressions Ltd | | Sierra On-Line | | | | |
| 84 | Impulse Software | Reino Unido | | |
| 85 | Impulsoft | | Stichting Impuls | | | | |
| 86 | Impulze | | Zeppelin Games Ltd | | | | |
| 87 | IMS Software | Reino Unido | | |
| 88 | Inaxel S.A. | España | | |
| 89 | Incantation | Reino Unido | | |
| 90 | Incentive Software Ltd | | Superscape Ltd | | | | |
| 91 | Incognito Software | Reino Unido | | |
| 92 | Independent Creators | Russia | | |
| 93 | Independent Software | Reino Unido | | |
| 94 | Indescomp S.A. | España | | |
| 95 | Indigo Group | Ukraine | Кривой Рог | |
| 96 | Individual Software | Germany | | |
| 97 | Individual Software Service | | Jurgen Schumpich GmbH | | | | |
| 98 | INDUG | Reino Unido | | |
| 99 | Infected Software | Reino Unido | | |
| 100 | Infernal Designs |
| 101 | Inferno Software Inc | Russia | | |
| 102 | Infinite Imaginations | Reino Unido | | |
| 103 | Infinite Software | Reino Unido | | |
| 104 | INFO Soft [1] | República Checa | | |
| 105 | Infocom | | | |
| 106 | Infogrames | | Atari Inc | | | | |
| 107 | Infogrames [FR] | | Infogrames | | | | |
| 108 | Inform Software | Reino Unido | | |
| 109 | Informatyczno-Elektroniczna Spoldzielnia Pracy INEL | Poland | | |
| 110 | Infosoft [2] | Russia | | |
| 111 | Infosoft Group | Russia | Rybinsk | |
| 112 | Infotek Group | Russia | Yekaterinburg | |
| 113 | Infotek Team | Russia | | |
| 114 | Ingelek Jackson | | Ediciones Ingelek S.A. | | | | |
| 115 | Inmensa Bola de Manteca (IBM) | | | |
| 116 | Innosoft | Reino Unido | | |
| 117 | INPUT | | Marshall Cavendish Ltd | | | | |
| 118 | Input Magazine | | | |
| 119 | Inside Law | Russia | Воронеж | |
| 120 | Insiders | | | |
| 121 | Insight Software | Reino Unido | | |
| 122 | Instant Products | Reino Unido | | |
| 123 | Instituto de Ciencias de la Educacion | | Universidad de Extremadura | | | | |
| 124 | Integer Research | Reino Unido | | |
| 125 | Intellicreations Inc | | | |
| 126 | Intelligent Design Ltd | Reino Unido | | |
| 127 | Intelligent Software Ltd | Reino Unido | | |
| 128 | Intentions Matrix Crew | Russia | Чебоксары | |
| 129 | Interactive Software People | | I.S.P. Marketing Ltd | | | | |
| 130 | Interactive Technology | Reino Unido | | |
| 131 | Interbit Software | Hungary | | |
| 132 | Interceptor Group | | | |
| 133 | Interceptor Software | | Interceptor Group | | | | |
| 134 | Intercomputer Inc | | | |
| 135 | Interface Publications Ltd | Reino Unido | | |
| 136 | Intergalactic Robots Ltd | Reino Unido | | |
| 137 | International Business S.A. | | | |
| 138 | International Publishing & Software Inc | Canada | | |
| 139 | Interplay Productions Inc | Estados Unidos | | |
| 140 | Intersoft Software | Reino Unido | | |
| 141 | Interstella Software | Reino Unido | | |
| 142 | Intraset Ltd | Reino Unido | | |
| 143 | Intruders Corp | Russia | Курск | |
| 144 | Invaders8 | Russia | Рязань | |
| 145 | Investronica S.A. | España | | |
| 146 | Inxs Software | Poland | | |
| 147 | Io Software | Reino Unido | | |
| 148 | Ionis Software International | Germany | | |
| 149 | Ioshua S.A. | España | | |
| 150 | IPC Magazines Ltd | Reino Unido | | |
| 151 | IQ Services | Reino Unido | | |
| 152 | Iqisoft | Yugoslavia | | |
| 153 | Iron boyz | Russia | Арзамас | |
| 154 | Iron Byte | Uruguay | | |
| 155 | Iron Falcons | Ukraine | | |
| 156 | Ironguys | Russia | | |
| 157 | IS-DOS Support Team | Russia | Балашов | |
| 158 | ISC Ltd | Reino Unido | | |
| 159 | Island Records | | | |
| 160 | Isolated House | Reino Unido | | |
| 161 | Istari Design | España | | |
| 162 | Istituto Geografico De Agostini S.p.A. | | | |
| 163 | ITS Software | | Antique Master Ltd | | | | |
| 164 | Ivan Benishek | Serbia | | |
| 165 | Ivan Berg | | | |
| 166 | Ivan Berg Software Ltd |
| 167 | Ivan Sanchez Jorda | España | | |
| 168 | Ivanovsoft | Russia | | |
| 169 | Iveson Software S.A. | España | | |
| 170 | Ivysoft | Reino Unido | | |
| 171 | IZ Software | Reino Unido | | |
