IBM

CICS
IBM home page for Customer Information Control System (CICS). Includes links to support, download, case studies, library, services, events and education. CICS is a transaction processing teleprocessing monitor that runs on z/OS and VSE/ESA, though there have been z/VM and non-mainframe versions.
http://www-01.ibm.com/software/htp/cics/

CICS: Bob Yelavich
CICS technical information from a retired IBM expert.
http://www.yelavich.com

CICS Central
Information, reviews and discussion about IBM's CICS.
http://www.juch.org/CICSCentral/

CICS Internet Connectivity
Describes options available for connecting CICS to the Internet.
http://www.solent-consultancy.com/cicsweb.htm

DB2 Server for VSE & VM
IBM home page for Database 2 running on z/VM and VSE/ESA. Overview and associated products, with links to features and benefits, system requirements, success stories, news, events, education and support. Formerly named SQL/DS, DB2 is a relational database management system (DBMS).
http://www-01.ibm.com/software/data/db2/vse-vm/

DITTO/ESA
IBM home page for Data Interfile Transfer, Testing, and Operations Utility for ESA (DITTO/ESA). Overview of features with links to support, news, library and more information. DITTO runs on VSE/ESA, z/VM and z/OS.
http://www-01.ibm.com/software/awdtools/ditto/

IBM End of Support Dates
IBM's official listing of the announced end of support date, if any, for each of their software products.
http://www-03.ibm.com/services/sl/products/java2.html

IBM ShopzSeries
An on-line tool (registration required) for IBM z/OS, z/VM, z/VSE customers to order tailored product and service packages, review their software licenses and plan for future upgrades.
https://www14.software.ibm.com/webapp/ShopzSeries/ShopzSeries.jsp

IBM Storage Software
IBM home page for mainframe storage software, including DFSMS, DFSORT and DataCore SANSymphony, with a link to the TotalStorage Software Roadmap.
http://www-03.ibm.com/systems/storage/

IBM-Main FAQ: Frequently-Asked Questions
Common questions and answers about the IBM-Main discussion list.
http://www.planetmvs.com/ibm-main

Jaqui's Papers & Presentations
10 years of technical conference papers and presentation notes by Jacqui Lynch of Circle4 Consulting. Performance, capacity planning and security, including VSAM, z/OS, Linux, TCP/IP and storage management.
http://www.circle4.com/jaqui/jlpaper.html

LISTSERV at the University of Georgia
RACF-L: RACF Discussion List
http://www.listserv.uga.edu/archives/racf-l.html

LookAt Message Help Facility
IBM message lookup for z/OS, OS/390, z/VM and VSE/ESA. By operating system version number.
http://www-03.ibm.com/systems/z/os/zos/bkserv/lookat/

Mainframe Programming
Muraleedharan's links and abstracts of articles on systems software topics, including z/OS, DB2, CICS, DFSMS and RACF.
http://www.muraleedharan.com/mainframe_programming.html

Mainframe Programming
Categorized page of links for IBM mainframe programmers.
http://www.oberoi-net.com/mainfrme.html

Mainframe VM & VSE Page
Links compiled by Johan van Arendonk.
http://home.iae.nl/users/jva/mainfeng.htm

Mainframes.com
Mainframe programming information, including a large dictionary and links to downloads and manuals.
http://www.mainframes.com

Mainstar Software: Resources
Although focused on z/OS storage management, many of the VSAM documents, for example, also apply to VSE/ESA and z/VM. White papers and other articles, much of it vendor-neutral.
http://www.mainstar.com/resources

Mike Murach's Mainframe Books
Publisher of books on COBOL, DB2, CICS, z/OS JCL, TSO, VSAM, IMS, and VSE/ESA. Sample chapters and code can be downloaded.
http://www.murach.com/books/mainframe.htm

MTS by Mark Riordan
A collection of information and links on MTS and MERIT (Michigan Educational and Research Information Triad) Network, including the MTS Help section with its description of MTS commands and related user documentation.
http://www.msu.edu/~mrr/mycomp/mts/mtsframe.htm

NaSPA: Network and Systems Professionals Association
User group. Primary focus is z/OS systems programming.
http://www.naspa.com

RACF Glossary
A selection of terms, with definitions, taken from an appendix found in most IBM RACF manuals.
http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/ICHZA720/GLOSSARY.4?SHELF=ICHZBK21&DT=20020109124747

SHARE CICS Project
Information on the CICS activities of the SHARE user group.
http://www.share.org/Volunteer_Center/programs/cics_project.cfm

Sysprog.net
News, programming tips and technical information for z/OS and mainframe Linux applications and systems programmers.
http://www.sysprog.net

Technical IT Audit, Euro and Security Articles
Includes many mainframe-related articles. From Audit Serve.
http://www.auditserve.com/articles

Tivoli Glossary
Terms used by IBM subsidiary Tivoli. Glossary can be used on-line or downloaded in Adobe Acrobat .pdf file format.
http://publib.boulder.ibm.com/tividd/glossary/tivoliglossarymst.htm

TPF: Transaction Processing Facility
IBM home page for TPF. Despite the name, TPF can be run as a stand-alone operating system on IBM mainframes.
http://www-01.ibm.com/software/htp/tpf/

TPF Family Libraries
Access to the IBM TPF Product Information Center, on-line manuals for TPF, TPFDF, EOCF/2, TPF Operations Server and IIOP Connect for TPF, and order information for CD-ROM and printed manuals.
http://www-01.ibm.com/software/htp/tpf/pubs/tpfpubs.htm

Transaction Servers and Tools eNews
An IBM monthly publication focused almost entirely on CICS.
http://www-01.ibm.com/software/htp/cics/enews/

VSAM Demystified
An IBM redbook covering basics, performance, recovery and management, with sample code in an appendix. Viewable on-line or downloadable as an Adobe Acrobat .pdf file.
http://publib-b.boulder.ibm.com/Redbooks.nsf/RedbookAbstracts/sg246105.html?Open

VTAM for z/VM and VSE/ESA
IBM home page for Virtual Telecommunications Access Method (VTAM); the z/OS version is part of Communications Server. Includes links to the latest version's announcement letter, documentation and storage estimates.
http://www-01.ibm.com/software/network/vtam/

WAVV: World Alliance of VSE and VM
User group spun off from GUIDE in 1995 and similar to SHARE, with annual conference aimed mainly at VSE/ESA and z/VM systems programmers.
http://www.wavv.org

WebSphere
Large IBM product family encompassing middleware and other application delivery software that provides Web-based access to an organization's application software. Including WebSphere MQ, the former MQSeries.
http://www-01.ibm.com/software/websphere/