| Name | Version | Updated | Category |
|---|---|---|---|
| Howold | - | Self diagnosis | |
| HP 48 | - | File transfer - Pocket Computers | |
| HPStudio | 1.0 | 22.07.1997 | File transfer - Pocket Computers |
| HTML-Help | 2.60 | 24.03.2020 | Internet - Website tools |
| HUKF Räuber-Beute Simulation | - | Science - Biology | |
| Hüpfer | 4.0 | - | Fraktale |
| HyperGEM | 1.01 | - | Database |
| Hyperkubus | - | Graphic and animation | |
| HyperSpace | 1.1 | - | Action - Shoot'em Up |
| Hypervoc | 1.0 | - | Languages - Vocabulary trainer |
| I Can't Believe It's Basic | 01.01.1991 | Demos - Demo | |
| Iconedit | 2.0 | - | Basic - GFA - Tools |
| IconEdit | 0.91.1 | - | Game development |
| IFS Generator | 01.01.1988 | Fraktale | |
| Image Printer/Cataloger | 2.2 | - | Image database |
| Image Resource | 01.08.1990 | Development | |
| ImgBack | 13.02.1991 | Disk tools - Backup | |
| ImgView | 1.31 | 27.02.2024 | Viewer |
| Imperium Hack | 2.0 | 17.08.2022 | Editor |
| IMX Liga | 2.2 | 01.01.1990 | Sports |
| IMX-Race | 01.01.1990 | Sports | |
| INcontrol | 1.0 | 01.05.1991 | MIDI tools |
| Init | 1.0 | 18.04.1993 | Utilities - General |
| Insectroid | 1.10 | 01.01.1992 | Arcade - Galaxian |
| Invaders (Sikdher) | - | Arcade - Space Invaders | |
| Inversi | - | Othello/Reversi | |
| Iphigénie | 1.5 | 20.04.2025 | Audio - General |
| Irrgarten | 1.0 | 14.05.1990 | Labyrinth |
| Irrgarten (hbo) | - | Labyrinth | |
| ISAM | 0.11 | 24.10.1991 | Basic - GFA - Libraries |
| Ishido | - | Ishido | |
| Isola (Feike) | 01.01.1987 | Strategy | |
| J'écris les Mots | 01.01.1992 | Education - Spelling | |
| Jackpot | - | Gambling | |
| JaKaMoKa | 1.1 | - | Calendar |
| JCLABEL | 1.1D | - | Printing - Labels |
| Jeux de Dada | 01.01.1997 | Don't worry be happy | |
| Jitterbugs | 01.01.1989 | Action - Shoot'em Up | |
| JJ-Druck | 3.0 | - | Printing programs |
| JJ-NLQ | 1.0 | - | Printer - Fonts |
| JJ-Pica | 1.0 | - | Printer - Fonts |
| JM-War | 0.0001a | 01.07.1996 | Strategy - War |
| Jockey | 2.0 | - | Music database |
| Joe | 1.5D | 06.05.2024 | Internet - Website tools |
| Jogger | 1.2 | - | Sports |
| Jogger's Logbook | 01.05.1988 | Sports | |
| Journal-As | 1.01 | 31.08.1989 | Finances - Accounting |
| Jupiter ja Neljä Kuuta | 01.01.1990 | Science - Astronomy | |
| K-Sculpt Librarian | 1.4 | - | MIDI - Editor/Bankmanager |
| K4-Bankloader | 1.03 | 06.06.1992 | MIDI - Bankloader |
GFA-Basic
GFA Basic was the most popular programming language dialect for the Atari ST. Developed by Frank Ostrowski and distributed by GFA Systemtechnik, GFA Basic quickly established itself with an ecosystem of tools, books, and libraries. The GFA Basic Editor is a modernized version with many new commands for multitasking systems.
