| 1 | H & D Services | United Kingdom | | |
| 2 | H-2-O Ltd | United Kingdom | | |
| 3 | H.A.W.K. Adventuring | | Home Adventure Writing Korporation | | | | |
| 4 | H.B. Software | United Kingdom | | |
| 5 | H.S. Software | United Kingdom | | |
| 6 | H.S.H. Ltda | Portugal | | |
| 7 | Hackers Squad | Russia | | |
| 8 | Hackerz' Design Software | Russia | Tyumen |  |
| 9 | Hackerz' Design Software | Russia | | |
| 10 | Haggisoft |
| 11 | Hajasoft | United Kingdom | | |
| 12 | Hall Video Products | United Kingdom | | |
| 13 | Halloween | Russia | Miass | |
| 14 | Halsoft | | Richard G. Hallas | | | | |
| 15 | Hamster Software | | Bryan Kitts | | | | |
| 16 | Handasoft | | Harry Capeling & Anne Capeling | | | | |
| 17 | Handmade Software Ltd | | | |
| 18 | Hands On Software | Germany | | |
| 19 | Handsoft | Slovakia | | |
| 20 | Hangyaboy's | Hungary | | |
| 21 | Hanna Software | United Kingdom | | |
| 22 | Hans Enters | Netherlands | | |
| 23 | Hans-Peter Frings | Germany | | |
| 24 | Hans-Peter Frings Software | | Hans-Peter Frings | | | | |
| 25 | Hansesoft GmbH | Germany | | |
| 26 | Happy Computer | Germany | | |
| 27 | Harbour Soft | United Kingdom | | |
| 28 | HARD Software | United Kingdom | | |
| 29 | Hardcore-soft | United Kingdom | | |
| 30 | Hardsoft | Czech Republic | | |
| 31 | HardWave Crew | Russia | Obolensk | |
| 32 | Haresoft Ltd | United Kingdom | | |
| 33 | Harlequin Software | United Kingdom | | |
| 34 | Harold Gale Associates Ltd | United Kingdom | | |
| 35 | Harris Software | United Kingdom | | |
| 36 | Harry Capeling & Anne Capeling | | | |
| 37 | Hartland Software | United Kingdom | | |
| 38 | Hartsoft | United Kingdom | | |
| 39 | Harvey Lodder | United Kingdom | | |
| 40 | Hasbro Inc | | | |
| 41 | Havensoft | United Kingdom | | |
| 42 | HC Mein Heim-Computer | Germany | | |
| 43 | Heath Computing | United Kingdom | | |
| 44 | Heep Soft | Poland | | |
| 45 | Heinemann | United Kingdom | | |
| 46 | Hektic Software | United Kingdom | | |
| 47 | Helge Keller | Germany | | |
| 48 | Hell Raisers | Russia | Zernograd | |
| 49 | Hellenic Software | | Theo Develegas | | | | |
| 50 | Hello! Games | Portugal | | |
| 51 | Herman Software | | | |
| 52 | Heroclaim | | | |
| 53 | Herosoft | | | |
| 54 | Herron Software | United Kingdom | | |
| 55 | Hessel Software | | Simon W. Hessel | | | | |
| 56 | Hestacrest Business Software | | Hestacrest Ltd | | | | |
| 57 | Hestacrest Ltd | | | |
| 58 | Hewson Consultants Ltd | | Rebellion Developments Ltd | | | | |
| 59 | Hexadecimal Press | United Kingdom | | |
| 60 | HGF Software | United Kingdom | | |
| 61 | Hi Score | Spain | | |
| 62 | Hi-Tec Software Ltd | | David A. Palmer Productions | | | | |
| 63 | Hi-Tech Microsoft | United Kingdom | | |
| 64 | Hi-Tech Software | United Kingdom | | |
| 65 | Hi-Yin Music | United Kingdom | | |
| 66 | High Byte Software | | | |
| 67 | High Fashion | United Kingdom | | |
| 68 | High Soft | | Highfield Secondary School | | | | |
| 69 | High Style Software | Russia | | |
| 70 | High Tech |
| 71 | High Voltage | United Kingdom | | |
| 72 | Highfield Secondary School | | | |
| 73 | Highlight Software | United Kingdom | | |
| 74 | Highsoft Systems | Spain | | |
| 75 | Hilderbay Ltd | United Kingdom | | |
| 76 | Hill MacGibbon | United Kingdom | | |
| 77 | Hillrise Software | United Kingdom | | |
| 78 | Hillview School | United Kingdom | | |
| 79 | Hilton Computer Services Ltd | United Kingdom | | |
| 80 | Hindleppe Software | United Kingdom | | |
| 81 | Hipocrates Soft | Spain | | |
| 82 | Hippo Enterprises | | Steve Lake | | | | |
| 83 | Hippo Software | United Kingdom | | |
| 84 | HiSoft | | HiSoft Systems | | | | |
| 85 | HiSoft Systems | | | |
| 86 | Hispanis Adventures | Spain | | |
| 87 | Hit-Pak | | Elite Systems Ltd | | | | |
| 88 | Hitech Games Plus | United Kingdom | | |
| 89 | Hitsoft | Czech Republic | | |
| 90 | HL Software | United Kingdom | | |
| 91 | HMSoft | Slovakia | | |
| 92 | HO Programs | United Kingdom | | |
| 93 | HOAX | Russia | Izhevsk | |
| 94 | Hobby Edizioni S.r.l. | | | |
| 95 | Hobby Press S.A. | Spain | | |
| 96 | Hobby Software | United Kingdom | | |
| 97 | HoblSoft | Czech Republic | | |
| 98 | Hodder & Stoughton Ltd | United Kingdom | | |
| 99 | Holburn Software | United Kingdom | | |
| 100 | Holiday Brothers Ltd | United Kingdom | | |
| 101 | Holly Products | United Kingdom | | |
| 102 | Holmes McDougall Ltd | United Kingdom | | |
| 103 | Holt Saunders Ltd | | | |
| 104 | Home [Programs] Soft | Russia | | |
| 105 | Home Adventure Writing Korporation | | | |
| 106 | Home Computing Weekly | | Argus Specialist Publications | | | | |
| 107 | Home Masters | Russia | | |
| 108 | Home Micro Software | United Kingdom | | |
| 109 | Home Studio | Russia | Vsevolozhsk | |
| 110 | Homecomputer | Germany | | |
| 111 | HOMEGA Software | Hungary | | |
| 112 | Homesoft | United Kingdom | | |
| 113 | Homestudy Ltd | United Kingdom | | |
| 114 | Hometown Software | | Andrew Bogue | | | | |
| 115 | Honey Soft | Russia | | |
| 116 | Honeyfold Software Ltd | United Kingdom | | |
| 117 | HoopSnake Design |
| 118 | Hooy-Program | Poland | | |
| 119 | Horizon Computers | Denmark | | |
| 120 | Hornby Software | United Kingdom | | |
| 121 | HorrorSoft | Russia | Cherepovets | |
| 122 | Hot-Shot Entertainments Ltd | United Kingdom | | |
| 123 | Hotrasoft | Czech Republic | | |
| 124 | Howard Marketing | United Kingdom | | |
| 125 | Howard Partnership | United Kingdom | | |
| 126 | Howard Software | United Kingdom | | |
| 127 | Hudson Soft | | Konami Ltd | | | | |
| 128 | Hueber Software | Germany | | |
| 129 | Human Soft | Russia | | |
| 130 | Human Softwere | Romania | | |
| 131 | Human Waste Company | United Kingdom | | |
| 132 | Humphrey Software | United Kingdom | | |
| 133 | Hutchinson | | | |
| 134 | Hutchinson Computer Publishing | | Hutchinson | | | | |
| 135 | Hypa Hypa Designs | United Kingdom | | |
| 136 | Hyperion Software | United Kingdom | | |
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