Commodore.ca is a hobbyist-run site documenting the history of Commodore Business Machines, covering the KIM-1, PET, VIC-20, C64, Plus/4, C128, and prototype machines like the Commodore 65. It offers manuals, ROM downloads, schematics, advertising materials, a chronology, profiles of key Commodore personnel, and an in-browser emulator/arcade, along with a user forum.

ENIAC Museum online resource dedicated to the Electronic Numerical Integrator and Computer, the first general-purpose electronic digital computer, built at the University of Pennsylvania.

Robotrontechnik.de is a German-language virtual museum documenting the history of computer technology developed in East Germany (GDR), focusing on the work of the market leader Robotron and other firms. Built as an open community project, it serves primarily as a knowledge center for hobbyists interested in preserving and repairing these historic devices.

Obsolete Computer Museum is a personal website, running since 1995, that catalogs a large personal collection of vintage and discontinued computers (Apple, Commodore, IBM, Tandy, and many others) organized as an exhibit list. It includes an FAQ, a helpline for questions about old computers, and photographs/basic specifications for the machines listed.

This site is Erik S. Klein's personal collection of vintage personal computers, generally built before 1985 for individual or small-group use, including systems like the Kenbak-1, Mark-8, Altair 8800, and Apple ][. It documents the systems, publications, ephemera, and events associated with the collection, and hosts the Vintage Computer Forum, a message board for the vintage computing community.

The Calculator Reference is a personal website founded by the late Rick Furr in 1997, offering extensive reference material on HP, TI, and other calculators as well as an in-depth focus on the mechanical Curta calculator (history, patents, repair manuals, and collections). It includes collector's guides, calculator lists, articles, and reproductions of posters covering calculator and telephone history.

Nathan Zeldes's personal website documenting his collection of slide rules and other historical calculating devices, with individual write-ups on dozens of specific artifacts (slide rules, mechanical calculators, adders, and related tools) describing their history and mechanisms. The site also links to other history-of-computing sites of interest.

Calcolatoria is Nicola Marras's personal website documenting the history of calculating instruments, from slide rules and mechanical calculators to early electronic calculators, including a free e-book and materials from his interactive exhibitions held internationally. It covers the history of both analog tools (slide rules) and digital mechanical calculators, and also touches on the history of communications and pre-GPS navigation. The site includes exhibition photos, historical posters, and a virtual slide rule.

The Russian Virtual Computer Museum is an online archive documenting the history of computing in Russia and the Soviet Union, founded by Eduard Proydakov and Leonid Teplickii and maintained with contributions from historians and translators. It hosts a computer dictionary with over 11,000 articles, a Hall of Fame profiling pioneers of Soviet computing, biographical books, and translated technical articles such as those on the SM series of minicomputers. The site is periodically updated with new articles, biographies, and links to conferences on the history of computing in the former Soviet Union.

Old Computer Museum is a personal website showcasing one individual's collection of vintage computers, built up from donations, garage sales, and eBay purchases. It features real, working machines with photographs and technical details, plus a section on vintage IBM and Microsoft operating systems.