| Name | Version | Updated | Category |
|---|---|---|---|
| Chain Reaction | - | Strategy - Explode | |
| ChampWord | 1.3c | 13.09.1992 | Word processor |
| Chaos Calc | 2.35 | 01.01.1993 | Fraktale |
| Charts | 2.43 | 08.07.1991 | Stock market |
| Check Book Manager | - | Finances - Home accounting | |
| Checkbook | 1.19 | 15.03.1991 | Finances - Home accounting |
| Checkstar | 1.002 | 01.01.1989 | Eingabehilfen |
| Checksummer | 2.1 | 01.05.1988 | Eingabehilfen |
| Chemie-Calculator | 2.1 | 21.08.1994 | Science - Chemie |
| Chemielexikon | - | Science - Chemie | |
| Chephren | 01.09.1992 | Adventures - Grafik | |
| Chicago | - | Gambling | |
| ChriMal | - | Paint programs - Monochrome | |
| Chrysalis | 1.3b | 26.01.2003 | History |
| CHSET_FI | - | Word processor - Signum | |
| CIA | 1.20 | 10.06.1992 | Spread sheet |
| CieLab | 1.4 | 01.01.1992 | Science - Physics |
| CIG-Header-Converter | 22.04.1987 | Development | |
| Cine 2000 | 1.2 | 01.01.1990 | Slideshow |
| Circle-Scrolling | 30.05.2015 | Demos - Demo | |
| City | - | Monopoly | |
| City Quest | 1.5 | - | Quiz - Hangman |
| City Quiz | 01.01.1990 | Education - Geography | |
| CJ | 3.3 | 01.01.1994 | Cookies |
| Cloze In | - | School - Teachers | |
| Cluster | 01.01.1987 | Science - Astronomy | |
| CoBörse | 2.12 | 01.03.1990 | Business simulation - Stock exchange |
| Cocktail | 1.6 | 24.02.2001 | Cocktails |
| Cocktails | 01.01.1987 | Cocktails | |
| Codes | 01.01.1986 | Utilities - General | |
| Codesave | 01.01.1989 | Security | |
| Coffee | 6.24 | 16.03.2020 | Fun |
| Col-Tris | - | Columns | |
| COLA - The Cost of Living Adjuster | 18.05.1990 | Finances - Home accounting | |
| Collapse | 1.1 | - | Columns |
| Collecto | 1.0 | - | Basic - GFA - Tools |
| Collector | - | Stamps | |
| Color Block | 1.0 | - | Board games |
| Color Puzzle | - | Puzzle | |
| Colorchrome | 1.0 | 17.07.1988 | Paint programs - Color |
| ColorText | 13.12.1991 | Viewer | |
| Compare (von Stetten) | 1.2 | - | Disk tools - File comparison |
| Compiler | 1.0 | 01.01.1990 | Basic - GFA - Shell |
| Computer Patience | - | Card games - Patience | |
| Computer School 1 | 01.01.1990 | Maths - Learning | |
| Computer School 2 | 0.2 | 01.04.1990 | Education - Spelling |
| Computer School 3 | - | Card games - Memory | |
| Concentration | 01.01.1988 | Card games - Memory | |
| Constructive Paint | 1.02 | - | Paint programs - Monochrome |
| Cook | 1.01 | - | Cooking |
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.
