Mainframe

Mainframe Programming - Useful Links for Practitioners - http://www.oberoi-net.com/mainfrme.html
Helpful links for programmers and designers of Mainframe Systems - COBOL, Assembler, Java, CICS, DB2, WebSphere, MQSeries, OS/390, System/390, ..
CBT Tape Home Page - http://www.cbttape.org
OS/390 (MVS) Freeware! Also has links to other mainframe freeware and information sites.
Mark's MVS Utilities - http://www.flash.net/~mzelden/mvsutil.html
MVS Utilities - REXX & TSO CLISTs, ISPF Edit Macros.
Planet MVS - http://planetmvs.com/
Has OS/390 (MVS) Freeware, tips, unofficial IBM-MAIN FAQ, unofficial HLASM FAQ and tips, Mainframe Slang and more
OS/390 Systems Programmers - http://www.mainframes.com
OS/390 systems programmer site for MVS and OS/390
Sysprog - http://www.sysprog.net
A site for MVS and Linux application and systems programmers who manage, support and program IBM S/390 mainframes.
Mainframe Discussion Board - http://jcsales.hypermart.net/WWWBOARD/wwwboard.html
A place for application programmers to exchange information.
A Few ISPF and OS/390 Tools and Toys - http://somebody.home.mindspring.com/
ISPF and OS/390 utilities and samples. Home of the TASID system monitor. Also contains ISPF extensions and REXX extensions written by an ISPF developer.
Is there life after MVS? - http://os390-mvs.hypermart.net
Dedicated to IBM-MVS mainframes: free stuff to download, y2k, and humor
OS/390 Documentation Services, Free Documentation Links - http://members.aol.com/os390doc/
Free sources of OS/390 information on the Web. Links to documentation, manuals, FAQs, tips, libraries, questions and answers, to assist programmers with products like MVS DFSMS JES2 IMS DB2 Java CICS TCP/IP NCP HLASM COBOL PLI GRS SYSPLEX LE HSM WebServer, more.
OS/390 FREE INFORMATION SERIVCES - free mainframe help - http://members.aol.com/os390info
Free help service for OS/390 system programmers. How to, code examples, answers to questions, and advice from senior system programmers, all for free.
E Street Journal - http://www.estreetjournal.com/techpage.html
Free Rexx help for the mainframe beginner. Includes sample code, downloads and a discussion board
Dinos web ring - http://nav.webring.yahoo.com/hub?ring=dinos&list
A web ring of OS/390 user web pages on the Internet