Commodore Resources
Hardware
1541 Ultimate
One of the very best solid-state 1541 cartridge replacements!
Comet+ Internet Modem
Arduino-based Wi-fi Internet device, emulated disk drive, and more.
Comet64 Internet Modem
Access to Telnet BBSes, gaming and online services such as CommodoreServer.com.
SID Symphony II
Yes, you can have 6-voice stereo SID music on your C64/128 in 2012!
Turbo Chameleon 64
Multi-purpose cartridge with CPU acceleration, memory expansion, SD card slot, etc.
Flyer
Combination Internet device and disk drive.
Retro Innovations
Retail site for several nifty modern C64/128 peripherals such as EasyFlash and uIEC.
Software
GameBase 64
23,000 C64/128 games online, playable in an emulator or downloadable for use on actual CBM 8-bit machines
High Voltage SID Collection (HVSC)
Archive of thousands of SID tunes, many from classic games and demos – does not include SIDPlayer tunes.
Star Commander
One of several different utilities for copying files between PCs & C64s
Programming
Power C for the C64
If you are a C programmer, you have to check out this page
C=Hacking
Vintage online newsletter on deeply technical CBM 8-bit technical topics
cc65
Cross development package for 65xx-based systems. C compiler, macro assembler and more.
CBM PRG Studio
A serious programming IDE for BASIC and assembly language.
Additional Resources
DMackey's Blog
A great resource for a hands-on approach. Details about lots of hardware and projects.
Commodore Books & Magazines
Need to look up something but don’t have the 20+ year-old C64/128 book? It’s probably online here!
Commodore Free Magazine
A incredible current Commodore magazine available in many formats
C64/128 Historical Information
Commodore.ca has an eclectic collection of historical and technical information
C64 Preservation Project
Community-driven project to locate and preserve all known C64/128 software via virtual disk images
Commodore Knowledge Base
Almost 700 articles on a wide variety of technical topics for CBM 8-bit computers; written back in the day for the comp.sys.cbm Usenet group
C64 Wiki
Commodore 64 encyclopedia written by the community in wiki format
Top Commodore Clubs