Hercules

- An open source System/370, ESA/390, and z/Architecture emulator for GNU/Linux, Mac OS X, and Windows.

- Installation, software, and programming guide.

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.

N.U.D.E. :

- User documentation for Hercules.

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.