Project 64's goal is "to preserve Commodore 64 related documents in electronic text format that might otherwise cease to exist with the rapid advancement of computer technology and declining interest in 8-bit computers on the part of the general population." Project 64 contains documentation on Commodore hardware, firmware, books, games and more.
See iDOC= for documents in languages other than English. iDOC= focuses on non-English documentation to avoid overlap with Project 64, but some English documentation is available.
NOTICE:
Information such as the address, phone number, website and email on any page marked as "Closed" in the Infobox is provided for historical purposes. Please do not attempt to contact them via this information as those items may have been reassigned since they closed. In other words, don't call the phone number expecting to be able to talk to that company or person. The Old template can be used to put a strikethrough such information.
Places that are marked with the "Retired" status and whose website has been archived may still have information and programs that can be downloaded through the Internet Archive. This is not guaranteed as the Internet Archive's Wayback Machine sometimes is not able to save 100% of each website. Navigate through the date menu at the top of the Archive's page to find a version of the website that might include what you are looking for.