List of programming languages targeting the 6502 microprocessor (with an emphasis on Commodore 8-bit computers), which are hosted on another system. A separate list of native Commodore languages is also available.

An integrated collection of programs designed to simplify the task of producing portable (cross) compilers and interpreters.

Series, with companion linker, coded in C, for microprocessor series: 6800(6802/6808), 6801(hd6303), 6804, 6805, 68HC08, 6809, 68HC11, 68HC12, 68HC16, 8051, 8085(8080), z80(hd64180), H8/3xx, DS8xCxxx, 6500.

A set of tools that enable to develop programs for the Nintendo GameBoy system, either in C or in assembly. GBDK includes a set of libraries for the most common requirements and generates image files for use with a real GameBoy or with an emulator like VGB or no$gmb.

Port freeware GNU tools to msp430 architecture. Cross compiler for msp430.

Cross compiler for 6502 processors, runs on Linux, Win32; can compile and link programs written in subset of ANSI C, Assembly, 1983 UPL language, or any mix thereof; can output programs for Commodore VIC-20, 64.

(Safety Critical Object-oriented Real-time Embedded) ANSI C, C++, Ada, Fortran cross compiler for embedded PowerPC, SPARC, x86 processors based on ANDF (Architectural Neutral Distribution Format) technology.

cross compiler tools for Z80 target.

A suite of executable, open source software development tools for the Atmel AVR series of RISC microprocessors hosted on the Windows platform. It includes the GNU GCC compiler.