Computer languages

JLS BASIC Compiler
Fast BASIC compiler

TURBO BASIC
Fast BASIC interpreter compatible with ATARI BASIC

TURBO BASIC Compiler
TURBO BASIC compiler

Draper Pascal 2.1
Pascal compiler

TURBO BASIC for SpartaDos 3.2d
TURBO BASIC for SpartaDos 3.2d

KASM65
Assembler

KLINK65
It links together relocatable files generated by KASM65

A65
A very simple 6502 assembler