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IBM JCL TutorialFree IBM Tutorial on JCL
CAVEMENChicago Area VM (and Linux) Enthusiasts
IBM TVIBM Television (via YouTube)
Robert 'prino' Prins z/OS Tools and UtilitiesA growing collection of useful z/OS tools and utilities.
Walter Pachls REXX toolslSome useful REXX Tools and examples
Eric Loriaux's SiteEric Loriaux Mainframe Website (System z - z/OS, z/VM, z/VSE, z/Linux and z/TPF)
Robin Murry's Rexx HomeCheck this site out - lots of neat things in REXX 
David Woolbright's SiteDavid's excellent site with info on s/390
Album of Algorithms and
for Standard Rexx
Great site for REXX algorithms.
z/OS NewsletterIBMs z/OS Newsletter with an option to subscribe for updates.  
IBM SysProg SiteThe IBM zSeries Systems Programmer Portal
IBM MainframesA site for IBM Mainframes by an Indian programmer.
TDSLinkFree IP Tracing for OS/390 and z/OS
IBM Historical SIteThe IBM Historical Site - Very Interesting

The only IBM User Group where you will find the answer to your questions, have the opportunity to attend classes(sessions), and interact with your peers.

This is the site where you can find the CBT Tape (actually the virtual tape). Several hundred files with source code for OS/390.
Mainframe UpgradeFor those looking to maximize profits from their IBM Mainframe strategy, hardware, and software.
Dave Alcock's MVS SiteDave has an excellent web site with a lot of information about OS/390, REXX, E-mail, and more...
Mark Zelden's MVS UtilitiesMark's site with a lot of very useful tools.
z/OS Sysprog ResourcesInteresting site by Phil Kingston
Mainframe WeekCool weekly web magazine from Xephon.
TRSMAINIBM's file compression tool.
Linux for S/390 and zSeriesTHE site for information about Linux on the mainframe.
Mainframe ForumWeb based discussions on mainframe issues and topics.
ISPF ToysFor ISPF toys you can't find a better site than this one by Doug Nadel of ISPF Development.
System 390 Search Site

A new site for finding S/390 Information

Andy's OS/390 PageAndy Robertson's page with OS/390 utilities (including XMITMAIL)
IBM RedbooksLink to IBM Redbooks on the web.
Mainframe TutorialsIBM Mainframe Tutorials, Java Tutorials, Interview info
RACF ResourcesUseful resources and information on RACF


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