Emula3
- http://www.emula3.com
- Contains emulators for many different computers and calculators/PDAs for many different platforms. [English/Italian]
Emuviews
- http://www.emuviews.com/
- Great emulation page maintained by JoseQ, maker of the famous Rumor Mill, many downloads, great layout - some hosted sites.
SIMH
- http://simh.trailing-edge.com/
- An open source collection of emulators for Windows of historical computers, including GRI-909, HP 2116/2100/21MX, IBM 1401/1620/1130/System 3, PDP-1/4/7-11/15/VAX. Also provides software kits, system photographs, and technical papers.
mic1
- http://www.ontko.com/mic1/
- A Java-based simulator which implements the Mic-1 microarchitecture described in Chapter 4 of Andrew S. Tanenbaum, Structured Computer Organization, Fourth Edition. [Open source, GPL]