Hercules
An open source System/370, ESA/390, and z/Architecture emulator for Linux, MacOS, and Windows.
Hercules/390: the New Users Documentation Effort
A volunteer effort by many authors to create a Documentation for the Hercules emulator, coordinated by Cory Hamasaki, divided into Primary, Non-Install and Advanced topics.
MVS 3.8J Technical Resources
Documentation for the Hercules and MVS 3.8 environment on a PC.
Running Classic Operating Systems with Hercules
A presentation at SHARE 97 by Jay Maynard of Global MAINTECH Corp. Looks in detail at OS/360, VM/370 and MVS Version 3.8. [PDF]
Yahoo! Groups : hercules-390
Discussion group for users of the Hercules ESA/390 mainframe emulator
Your Private Mainframe
Introduction and links about the Intel-based Hercules mainframe emulator, as well as an MVT tutorial and MVS 3.8 binaries and add-ons.