| Name | Version | Updated | Category |
|---|---|---|---|
| KLAUS | 01.01.1988 | Strategy | |
| Klein Edi | 1.4 | 04.06.1992 | Editors - Full screen |
| Kleines Schreibmaschinen-Programm | 01.01.1986 | Printing - Type writer | |
| Klima | 2.1 | - | Science - Meteorology |
| Klondike Solitair | - | Card games - Patience | |
| Knack den Tresor | 1.9 | - | Business simulation |
| Kniffel (Tiemann) | 1.2 | 09.04.1989 | Dice Game - Yahtzee |
| Knobel | 1.1 | 29.06.1992 | Game collections |
| Knowmeier | 1.00 | 01.01.1990 | Quiz |
| Knuddel's Quest | - | Labyrinth | |
| Knuffel | - | Dice Game - Yahtzee | |
| Koch | 01.01.1989 | Quiz | |
| Kolonial | 4.0 | 04.10.1990 | Strategy |
| Kombination | - | Strategy | |
| Komplexe | 0.1 | 17.11.1991 | Science - Chemie |
| Kon-ton | 1.01 | 12.03.2020 | Fun |
| Konto (Klein) | 01.06.1987 | Finances - Home accounting | |
| Konto (Zaayenga) | 2.0 | - | Finances - Bank |
| Konv One | 01.05.1987 | Converter | |
| Konv-RSC | 1.3 | - | Development |
| Konzentration | 01.01.1986 | Senso | |
| Kopfsalat | 01.01.1990 | Maths - Learning | |
| Körper | 01.01.1988 | Maths | |
| Kortmix | 01.01.1995 | Card games | |
| Kraska | 1.2 | 01.01.1992 | Fraktale |
| Kredit | 3.2 | 01.08.1988 | Finances - Money transfer |
| Kris's Doodler | 1.5 | 01.01.1989 | Paint programs - ST Low/High |
| Kritzel | 4.01 | 20.08.1992 | Paint programs - Monochrome |
| Krypton Faktor | 1.0 | 01.01.1991 | Quiz - TV |
| Krypton Faktor II | 1.1 | 01.01.1992 | Strategy |
| Kurvoid | - | Skill - Tron | |
| KX-P1124 | - | Printer - Tools | |
| KXP Control | - | Printer - Tools | |
| Label JRB | 1.20 | 01.01.1987 | Printing - Labels |
| Label Maker | 2.0 | - | Printing - Labels |
| Label Printer | 1.0 | - | Printing - Labels |
| Labo | 7.5 | 01.11.1993 | Graphic converters |
| Labyrint | 01.01.1994 | Labyrinth | |
| Labyrinth Master II | - | Labyrinth | |
| LadenPRG | 6.01 | 01.06.2000 | Point of Sale |
| Laser Design Pro | 1.22 | - | Paint programs - Monochrome |
| Laserball | 2015 | 07.05.2015 | Puzzle game |
| Lasso | - | Graphics | |
| Laufbilder | 1.0 | - | Slideshow |
| Lautsprecher | - | Science - Electronic - Speakers | |
| LCD Games | 2.0 | 16.08.2024 | Skill - Game & Watch |
| Le Pauker | 3.03 | 01.01.1992 | Learning system |
| Le Theatre des Lettres | 01.01.1987 | Education - Spelling | |
| Lebenserwartung | - | Self diagnosis | |
| Lebky | 01.01.1993 | Puzzle game |
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.
