Compile Java byte-code to native CPU's.
Ultimate Commodore 64 Reference: ROM Disassembly, Memory Map, ...
VirtualC64 is a cycle-accurate C64 emulator for macOS
Sidekick64: A Versatile Software-Defined Cartridge for the C64, C128, C16, plus/4, and VIC20
The source from my Commodore 64 assembly programming tutorial for Windows
C64Studio is a .NET based IDE specializing in game development for the C64 in assembler and BASIC
Byte-aligned, efficient lossless packer that is optimized for fast decompression on 8-bit micros
SIDKick pico is an inexpensive dual-SID-replacement for the C64 and C128
SIDKick -- the first complete SID 6581/8580-drop-in-replacement that you can build yourself
A harness for the Diagnostic Rev. 586220 Test for the Commodore C64
high level programming language and compiler targeting 6502 machines such as the C-64 and CommanderX16
Realtime cycle exact emulation of the C64 using multiple microcontrollers in parallel.
Original sources and binaries for Supermon+64 V1.2 by Jim Butterfield