| Name | Version | Updated | Category |
|---|---|---|---|
| Cops and Robbers Too! | 01.01.1992 | Action - Arcade | |
| Cosmos | 0.2b | 01.01.1991 | Strategy - Star Trek |
| Cosmos Chronicles | 1.02/0.95 | 08.01.2023 | RPG (2D) |
| CP6-Etikett | 05.05.1988 | Printing - Labels | |
| Crack Art | 1.36 | - | Paint programs - Color |
| Craptalk | - | Demos - Intro | |
| CrazyPrinter | 2.4a | - | Printing - HP Deskjet |
| CRC-TOS | - | Patches | |
| Create | - | Fraktale | |
| Creator | 1.0 | - | Fun |
| Cresus | 1.2I | 06.05.2024 | Finances - Home accounting |
| Crime City Hack | 2.0 | 17.08.2022 | Editor |
| CrissCross | 01.01.1991 | Board games | |
| Critical Mass | - | Action - Shoot'em Up | |
| CrossRef | 2.1 | - | Basic - GFA - Tools |
| Crusader | 1.10 | - | Scrabble |
| Crusader Monochrom | 1.00 | - | Scrabble |
| Cryptic | 05.09.1998 | Security | |
| Cryptogram Helper | - | Word search | |
| Cryptor | - | Security | |
| Crystal Cave | 2.2 | 14.03.1990 | Arcade - Breakout/Arkanoid |
| Cubus | 1.0 | - | Puzzle game |
| Cud Lee's Quest | 1.0 | 01.01.1993 | Skill - Plattform |
| Curfit | 3.0 | - | Maths - Plot |
| Cuttex | 2.0 | - | Printing programs |
| Cyclus | 0.1 | 01.01.1989 | Cardbox |
| D50 Manager | 1.0 | - | MIDI - Editor/Bankmanager |
| DaBa | 2.0 | 30.12.1992 | Database |
| Dakar | - | Racing game | |
| Dallas | - | Business simulation | |
| Dame | 1.03 | - | Dame |
| DARC - Defensive Alien Remoting Command | 01.01.1996 | Action - Ego-Shooter | |
| DARC II - Defensive Alien Remoting Command | 01.01.1996 | Action - Ego-Shooter | |
| Dark Fortress | 04.06.2020 | Skill - Plattform | |
| Dark Pearl | 1.0 | 01.09.1992 | Skill |
| Darts-Counter | 2.20 | - | Sports |
| Das Gobangspiel | - | Gobang/Gomoku | |
| Das Grabmal | 01.01.1989 | Adventures - Grafik | |
| Das grosse Millionenspiel | 01.07.1992 | Board games | |
| Das primitive Spiel | 1.0 | 23.05.1993 | Strategy |
| Data Handler | 3.0 | 21.07.1990 | Address database |
| Data-Text | 1.2 | - | Address database |
| Databox | - | Database | |
| DataChess II | 4.0 | 03.01.1994 | Chess - Database |
| Datari | 1.3 | 02.11.1989 | Chart graphics |
| Datebook | 2.25 | 16.01.1992 | Personal organizer |
| Datecopy | 1.41 | 01.06.1989 | Disk tools - File copy |
| Datei Verschlüsseler/Entschlüsseler | 07.01.1991 | Security | |
| Datei-Killer | 1.3 | - | Disk tools - Removal |
| Datendatei | 1.00 | - | Database |
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.
