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Tom Brennan Software (Vista tn3270)


Vista tn3270 is a Windows program designed to emulate IBM 3270 terminals connected to a host via IP link. Currently it is available for a free 30 day trial, and costs only $30.  If you are looking for an emulator created with mainframe programmers in mind, then give this one a try.  You might find some unique features unavailable even on the highest priced commercial emulators.


Information, Software

The on-line home of the CBT tape collections of z/OS Freeware. Lots of tools for the S/390 programmer or system doctor!

 CBTTAPE.ORG is really the best site for z/OS utilities; surely worth a visit if you really don't know it yet !

GSF Software (by Gilbert Saint-Flour)

Information, People, Software

Software and freeware written by Gilbert Saint-Flour for the MVS, OS/390, z/OS, TSO, ISPF environments.

Welcome to GSF Software          
Tools and services for:

  • z/VSE to z/OS Migration and Conversion
  • Language Conversions
  • z/OS Productivity
  • z/OS JCL Redesign
  • Data Center Consolidations

OS/390 and z/OS Freeware (by Lionel B. Dyck)

Information, People, Software

Welcome to my website which I've dedicated to making available to the 'world' software that I've written over the years. Here you will find XMITIP, the OS/390 and z/OS E-Mail application (on the TCP/IP Tools page) and many other tools for OS/390 and z/OS. These tools are primarily written in REXX with a few Assembler programs.
My name is Lionel B. Dyck and I've been in systems programming since 1972 (starting with MVT 21.6 - remember IBM APARs delivered on punch cards) and have developed a number of tools over the years. I've created this site to (1) share useful code that I've developed and (2) to return a little back to the community of mainframe systems programmers from whom I've learned so much. I've gleaned code and knowledge from the MVT Tools Tapes (remember the Blue Berets?) to the current CBT Tape and a wealth of Web Sites. I hope my contributions here are helpful to others.

Software Diversified Services


Software Diversified Services (SDS) was founded in 1982, and now supports over 20 z/OS, MVS, VSE, and VM mainframe systems products for more than 1,000 clients worldwide. PC software related to the mainframe industry is also available through SDS.
Security, encryption, and data compression are our current focus, also performance monitoring, report distribution, and client-server applications.
SDS is noted for having the highest quality software, documentation, and technical support in the business. SDS technical support has been rated number 1 by the prestigious IBEX Bulletin.
z/OS Mainframe Software Applications
NetView® Replacement, NetView REXX, Mainframe SFTP, Mainframe FTP, zOS SFTP, zOS FTP, Mainframe TCP/IP, z/OS TCP/IP, z OS Communications Server, Mainframe encryption, Mainframe Security Software, z OS Security, IBM Enterprise Extender, OSA Express…
SDS is a leading provider of enterprise software to over 1,000 licensed users worldwide, with 30 years of service to the industry.


Consulting, Software

DataKinetics, the leader in transaction optimization, helps the top data centers in the world to optimize transactions and transaction-related data, reducing their cost-per-transaction.  In business for 35 years, DataKinetics products are powering over a billion business mission-critical transactions per second every day for the world’s largest banking, credit card, brokerage house, insurance, healthcare, retail and telecommunication organizations.


Action Software


Action Software International is a division of Mazda Computer Corporation.

Located in Toronto, Canada, Mazda Computer Corporation has been developing superior and outstanding systems and network management software since 1980.

Mazda Computer Corporation’s mission is to provide high quality performance software to the IBM z/OS system user community. We aim to provide our customers with highly functional and usable software along with exceptional customer service.

Mazda Computer Corporation began designing eventACTION in 1987. The first customer production installation was completed in 1989. Since then, eventACTION has been installed in over 250 sites in the United States, Canada, and Europe.

ACTS Corporation

Software, Training

TestManager automates the process of creating and controlling an online test, quiz, exam, or certification. SurveyManager makes it easy to create and conduct surveys or evaluations over the web. These tools are specifically targeted to meet the needs of businesses of all sizes, as well as educational institutions, certification organizations, and government agencies, including the military. While TestManager and SurveyManager are robust, feature-rich, and secure solutions, they both cater to the non-technical or low-tech user, making it simple for those who want to establish their own sophisticated online testing, survey, or evaluation environment. Both products are web-server based applications that are accessed using browser software (Internet Explorer or Firefox). ACTS can either create and host your testing or survey/evaluation website(s) under an ACTS domain powered by our products (e.g. Software as a Service), within a computing cloud such as Amazon's Elastic Compute Cloud, or license one or more copies of TestManager or SurveyManager to run on your own website or company intranet/extranet. TestManager and SurveyManaager may be installed on Windows Server 2008, UNIX variants, including Linux, and Linux for IBM's System z mainframe.

Advanced Debugging System for CICS (ADS)


CICS is one of the world's most durable software products thanks to its ever-expanding capabilities, continuous and aggressive vendor support, large installed base, exceptional reliability, high performance, and huge variety of applications and tools. It is also a very secure system and functions at a high speed. (Many of these attributes depend on the zSeries platform.) CICS is used in bank teller applications, airline reservation systems, and hundreds of other diverse industries. 
ADS was developed in 1974 to allow programmers to know exactly what their code is doing at any point in the process. It is a package of integrated tools to provide both manual and automatic detection of events within the CICS application layer. 

Advanced Software Products Group


Advanced Software Products Group, Inc. has provided the z/OS & OS/390 Mainframe community with cutting edge software solutions, support and services since 1986. With a worldwide network of support, including active partnerships with IBM™ and Microsoft™, ASPG remains a leader in the optimization of data center performance. ASPG offers over 20 innovative software solutions for Data Security, Storage Management, Capacity Planning, System Management, Application Programming and CICS Productivity.

Al Sherkow's I/S Management Strategies, Ltd.


Al Sherkow is a capacity planning and performance consultant for IBM's mainframe computers. He is also recognized as the leading industry expert on the crucial subject of IBM’s new software pricing model Workload License Charges (WLC). This expertise is the basis of the LPAR Capacity and Software Usage Analysis (LCS™) Software. LCS is the only WLC Pricing tool available in the world! LCS helps sites study and understand Workload License Charges including: estimation of your aggregated software invoices, value of zIIP and zAAP engines, recommended SCRT overrides. With LCS you can audit your SCRT reports and estimate your invoices weeks before they arrive. LCS provides alerts when products reach new billable peaks and when additional Value Units must be acquired for IPLA products.


Alebra Technologies Inc.


Alebra's products have been designed to breathe new life into the data access and movement challenges caused by the exponential growth of data in the Enterprise.

Allen Systems Group's Home Page


A recognized innovator in enterprise IT and business software solutions, ASG Software Solutions has been optimizing 85 percent of the world’s most complex IT organizations for over 25 years. We create and deploy unique software solutions that reduce cost, mitigate risk and improve service delivery throughout the IT lifecycle. ASG’s comprehensive solutions help you solve today’s challenges, such as cloud computing and big data, while driving your business forward by providing insight and control across cloud, distributed and mainframe environments.

Allumina Software


DYNA-MatCH is a high-performance, comprehensive, general-purpose batch utility designed for use on IBM OS/390, and other MVS and VM operating systems. DYNA-MatCH fills the gap between limited single-file utilities and all-inclusive languages that require extensive training and lengthy manuals. Due to its simple design and efficient processing, it offers considerable savings in development, testing, execution and maintenance. DYNA-MatCH is easy to learn and use, and yet it can perform all the basic Programming Constructs.
DYNA-MatCH is designed to allow the combination of these basic programming elements. This feature gives DYNA-MatCH the power to solve complex problems that previously required programming. DYNA-MatCH utilizes a unique two-step process. The first step creates a work area. The second step processes the work area. This inventive two-step process facilitates the combination of functions, giving DYNA-MatCH distinctive capabilities that ordinary one-step utilities can't offer.
DYNA-MatCH requires only JCL and simple Control Statements to complete complex  problems that would only be accomplished by writing programs before DYNA-MatCH

American Software


A leading Apparel Software Suite for product development, sourcing and production, PLM, CPSIA, ERP, EDI, global trade management, floor control, payroll, fashion, e-commerce and more. New Generation Computing, Inc. (NGC) is a leader in product lifecycle management (PLM), global sourcing and enterprise resource planning (ERP) software for the fashion, apparel, footwear and retail industries. Every day NGC solutions help hundreds of leading companies gain real-time visibility, improve speed to market and enhance quality control throughout their supply chain.

Applied Computer Technology (ACT)


Applied Computer Technology (ACT) develops and markets a broad range of PC-based System Network Architecture (SNA) and TCP/IP tests which can be used to conduct conformance/validation testing, load/stress testing and evaluation of SNA and TCP/IP products. We provide more than 12,000 ready-to-run tests for 3270, 5250, RJE, APPC, APPN, and TN3270E/TN5250 using an open API which allows easy development of additional tests. Our products may be attached to the Implementation Under Test (IUT) using SDLC, LAN (Token Ring or Ethernet), X.25, SLIP, or PPP communication links.

Applied Expert Systems Inc.

Networking, Software

Since 1991 AES has focused on the development of network performance and availability Business Service Management solutions. Through its strong emphasis on listening to customers, foreseeing far-reaching trends in the marketplace, and providing stellar support systems, AES continues to maintain its lead in providing state-of-the-art, easy-to-use performance tools, specializing in supporting the infrastructures for Cloud Computing and Virtualization to ensure that Application Service Levels can be delivered

Applied Software


Applied Software, Inc. develops high performance mainframe utility software such as file editors, copy / merge programs,mainframe  file transfer and mainframe encryption products."



APS ENTERprise software consulting gmbh was founded in 1996 in Mönchengladbach (Germany) with the mission of creating enhanced solutions for the batch production that provide the best return on investment possible to our customers. New requirements created by challenging projects in production management could no longer be completely fulfilled by professional services and the existing products of established providers. Based on this, APS ENTERprise has developed some of the most beneficial value added solutions on the market and has become an acclaimed provider.

  • Solutions for Control-M:

VISUALjob for Control-M (Understand and improve your Control-M schedules), APS Advisor (Business Service Monitoring and easyQuery), APS Manager for Control-M (Web based job level monitoring, operating and administration for Control-M experts and self-service users), APS Sysview for Control-M (Sysout and log management for Control-M)

  • Solutions for TWS, Solutions designed for Effective Workload Automation with TWS for z/OS and TWS End to End:

VISUALjob for TWS (Understand and improve your TWS schedules), VISUALjob EPD (The integrated development environment for TWS, JCLs and scripts), TWSemon (Extended monitoring and operating for TWS), TWSeasy (Utilities that make your life with TWS easy)

  • UC4 PrintView:

Enhance Process Flow Visualization for  UC4 Automation Engine with UC4 PrintView. UC4 PrintView™ process flow visualizations, supporting the UC4 Automation Engine, help you better understand intricate processes by displaying and printing them in flowcharts and other graphical formats (JPG, PNG, TIFF, and more).

  • Solutions for JCL and Script Management, Solutions designed for the effective management of JCL and scripts:

APS VISUALjobControl (Analyze JCL and scripts), VISUALjob EPD (The integrated development environment for TWS, JCLs and scripts)

Arbutus Software


Analysts and IT use Arbutus Data Tools, Arbutus Servers and LegacyLink to access, convert and analyze data - even legacy and mainframe files.

Arney Computer Systems


Arney Computer Systems is dedicated to creating high quality system software products for the IBM mainframe community. These products are available world wide through Arney Computer Systems, its distributors and resellers. As an IBM Business Partner, we are actively involved at the highest level of new technologies.   
Auto-MPF z/VSE console and message management and system automation

Ascend Software Incorporated


Ascend Software, Inc. is a high technology company, delivering superior solutions for the mid-range, iSeries, mainframe, and Windows computer systems, and.was incorporated in July 1997.  Ascend is a leading provider of Business Process Automation and Enterprise Information Management (EIM) solutions, and our software solutions are unsurpassed in performance and functionality. Ascend understands business and offers a one-stop solution to meet diverse process improvement, report, and document management needs. Our SmartTouch Solutions distinguish themselves through an underlying architecture developed to accomplish more with fewer steps or “smarter touches”, to efficiently service the enterprise.  Because of Ascend’s industry expertise, vision, dedication, and attention to detail, SmartTouch Solutions are faster to implement, easier to use, and yield a quick ROI. 

Ascent Logic Corporation


For more than 30 years, ALC has grown to become the leader in its field by developing the tools, systems and expertise to see beyond the action a consumer takes (as reported on the data card) to understand the “why” beyond the “what.” And more importantly for our clients, to discern the predictive buying patterns that can spell the difference between a positive and negative ROI. On a list. A mail schedule. An entire mail campaign.
Which is why our clients include the leaders in virtually every category of business. From Financial institutions to non-profit organizations. From catalog marketers to retailers. From magazines, newsletters and book clubs to home entertainment marketers. From the telcos to the high tech sector. From Juvenile to senior marketers. From B2B to B2C. And every category in-between.
They’ve seen first-hand how “the rest of the story” can lead to reduced new customer acquisition costs, significant increases in lifetime customer value and a greatly improved return on marketing investment.

ASE software


Since 1980 we've made tools for users and managers of MVS, OS/390 and z/OS systems

Astrom Software AB


Åström Software AB was founded 1985 with the aim to produce a state-of-the-art 3270 session manager.
InterSession (first named MENU), was already then used by a number of Nordic customers.
Since then we have continously updated InterSession with new functions and features.
In the 2000's the full range of IP features were introduced.


Networking, Software

For 30 years, Attachmate has been delivering essential business information to the right users, in the right formats, via the right devices. Today, Attachmate software runs on 19 million desktops and mobile devices—across industries ranging from financial services, healthcare, and government to retail, travel, and manufacturing. Built to integrate existing systems and emerging technologies, our products help organizations worldwide put their IT assets to work in new and meaningful ways.
Founded in 1982, Attachmate initially focused on the IBM terminal emulation market. Today, Attachmate delivers advanced software for terminal emulation, legacy modernization, managed file transfer, and enterprise fraud management.
Attachmate is one of the largest PC software companies in the world, with offices in more than 50 cities in North America and in 145 countries around the globe. Since its founding, Attachmate has made several acquisitions to expand its range of host access hardware and software solutions.
Attachmate is one of four business units in a privately held enterprise software holding company called The Attachmate Group. The other three business units are Novell, NetIQ, and SUSE.



Attunity is a leading software vendor for enabling the ‘real-time enterprise’. For nearly two decades we have been supplying the world’s best organizations with enterprise-class software solutions to unlock their information assets wherever they are, and to identify key business events that require immediate action.
Using our software, companies can seamlessly and efficiently connect, transfer and join to and from virtually any data source and identify critical changes in real-time, and subsequently service-enable that data for use in modern, rapid-to-deploy and re-configurable business applications.

Aviva Solutions


Aviva offers a comprehensive range of Secure Windows-based host access, Web to Host, and Application Integration products that extend corporate data running on IBM mainframe, AS/400, UNIX and Dec systems, to desktop PCs, Web browsers, or mobile devices over SNA, IP and wireless networks.

Axios Products


Axios Products, Inc., develops, distributes, and supports mainframe performance enhancement and management software for z/OS, OS/390 and MVS environments. From our very first days in business, back in 1976, we have dedicated ourselves to providing Customers with useful, reliable, and cost-effective software along with responsive technical support.

B.O.S. Software Service und Vertrieb GmbH


We design the future for a networked world.
Unlimited up-to-date information at the right time, the right place and in the right format for: IBM-Mainframe, Linux, MS-Windows, UNIX, Cloud.
As a leading software provider for IBM mainframe integration we are counting on innovation, competence and sustainability. Our goal: A new definition of IBM mainframe integration. Limitation is a challenge. We remove this limitation. We create new ways for our customers with unique technologies. We love the extraordinary including extraordinary requirements of our customers. Our claims are high. High availability, performance and readiness for future technologies are no lip service to us but day to day business. We create software solutions – advanced and for the future. Over 1,000 companies of all industries are our customers.

Barnard Software Inc. (BSI)


Barr Systems


Barr Systems has built a strong reputation on providing world class products to the output management industry. With more than 55,000 product installations worldwide, Barr Systems understands the challenges and requirements of the industry. By always listening to you, the customer; and by employing a continuous improvement process, we have designed and developed an integrated enterprise-wide output management system that addresses the issues you consider most important.

Bateleur Holding Group


In the belief that superior levels of technical expertise and experience, matched with equally high standards of service and support are the keys to commercial success, Bateleur's mission is to develop, implement and deploy IT systems that work for its customers, thereby unlocking the business potential of the clients' environment while maximising returns on IT investments.



BCSC develops and supports system software for the IBM z/OS (or MVS, or OS390) environment. Our main expertise is in the area of security products like RACF and ACF2.

Last year, all BCSC products, services and customer support contracts were acquired by IBM Tivoli. This means that our RACF add-on tools are no longer available via BCSC. The RACF-Offline product has been integrated into the IBM Tivoli zSecure Admin product. The FixCon and the FixOwner tools are currently not yet integrated. We hope that these useful tools will someday also be available as part of the IBM Tivoli zSecure Admin product.

BETA Systems


Beta Systems Software AG (General Standard: BSS, ISIN DE0005224406) was founded in 1983, has been listed on the stock exchange since 1997 and employs a staff of about 270. Company headquarters are located in Berlin, Germany. Beta Systems provides organizations of all sizes and industries with sophisticated infrastructure software. Faced with an increasingly demanding legal framework, companies are hard pressed to meet legal provisions while also needing to ensure that they operate as effectively as possible. This is where our leading identity, data and document management technologies come into play, allowing companies to efficiently perform complex audit, GRC and compliance tasks in a heterogeneous IT and business environment.
Beta Systems is an internationally active company with competence centers in Cologne, Neustadt and Calgary, as well as 14 affiliated companies and numerous partner businesses. More than 1,300 customers all over the world are currently operating over 3,200 installations, relying on products and solutions from Beta Systems to optimize their IT landscape and maximize security. Beta Systems generates about 50 percent of its turnover outside of Germany. Roughly 200 of the international customers are located in the USA and Canada.

BGD Software


BackGrounD Software Inc. is a privately owned corporation. There are no hidden boards, executive figures, layers of assistants, managers managing management or any of the faceless corporate stuff. Pick up the phone and talk to the owner, get the decision while you are on the phone, close the deal with a shake of the hand.
Isn't this what business used to be ?
Technology Partners
IBM S390, Java Technologies and DB2/UDB Partner World for Developers since 1996
Microsoft Developer Partner since 2004
RIP Sun Microsystems, Inc. - Sun Partner Advantage 2000-2011 

Blueline Software


Welcome to the Blueline Software first established in 1989 to provide high quality affordable software to the mainframe community. Our goal is to provide you with useful information about our company and products so you will have the most recent and relevant information at hand.

A large percentage of our business is repeat business from conservative institutions such as Banking, Finance, Government, Military, Mining and education and we have enjoyed continued success with all sectors. We not only have quality software products, but an excellent technical support team. We are proud that many sites come back time and time again to Blueline Software for additional products or services. We can arrange for a free trial of any of our products and usually ship the product the same day.

Blueline has over 75% of all mainframe sites in Australia, New Zealand and throughout S.E.A. as existing customers so you know you have the backing of a truly experienced and trustworthy organisation that has serviced the market for over 25 years.



BluePhoenix provides successful Legacy Modernization services for its customers’ legacy applications and databases.

BMC Software


Business runs on IT. IT runs on BMC Software. BMC offers a unified platform that helps IT organizations cut cost, reduce risk and drive business profit.



data center networking, storage area networks, SAN, storage networks, network storage, IP/Ethernet Switches & Routers, file management, Data Center Fabric, blades, switches, data management, data storage, directors, CEE and FCoE

Caerus Solutions


Your partner for z/OS systems software
Incorporated in 2000, Caerus Solutions represents both Cognitive Technologies Corporation and DTS Software Inc. as Distributors for their MVS system software. We offer service and product support 24 hours a day 365 days a year to clients and prospects throughout the UK, Eire, Belgium, Luxembourg, and the Netherlands.
Caerus Solutions believe in providing products that are constantly developed and maintained to help organisations optimise their efficiency whilst being realistically priced. Our partners are experts in their fields and react to current needs and changing times by regularly updating their products.
In today’s competitive world personal service is often neglected if not forgotten. Big corporations promise flexibility through large product portfolios and although a lot is on offer, many organisations are left with a surplus of unnecessary costs and unsupported products. We believe in addressing the real problem areas and reacting actively to questions and suggestions from our customers.

Canam Software


Encode or decode XML, SOAP, JSON direclty in your COBOL programs: Easily design and generate your XML, SOAP or JSON encoding/decoding COBOL programs using XML Thunder.  Using the visual design tool just map your COBOL fields to XML, SOAP, or JSON nodes and generate a fully functional data binding COBOL program to either parse or produce XML, SOAP or JSON. You can then work with your XML node values as regular COBOL fields - fast and easy!

Cartagena Software


You need reliable end-to-end solutions for your systems management. From IT Security and Support, to Tape Migration and Secure Media Destruction, Cartagena delivers experience, expertise and results.

CDB Software, Inc.


CDB Software, Inc. is a leader in data management solutions for DB2 z/OS. CDB focuses its business on DB2 for z/OS to provide unique and innovative solutions that enable companies to expand their DB2 system to meet business needs while controlling the overall cost of the mainframe. Founded in 1985, CDB is a privately held corporation based in Houston, Texas with offices worldwide.



CentOS is an Enterprise-class Linux Distribution derived from sources freely provided to the public by a prominent North American Enterprise Linux vendor.  CentOS conforms fully with the upstream vendor's redistribution policy and aims to be 100% binary compatible. (CentOS mainly changes packages to remove upstream vendor branding and artwork.)  CentOS is free.

CentOS is developed by a small but growing team of core developers.  In turn the core developers are supported by an active user community including system administrators, network administrators, enterprise users, managers, core Linux contributors and Linux enthusiasts from around the world.


Century Software


Century Software develops, markets, and supports advanced Web-to-host and desktop networking solutions for the worldwide market. Our products provide superior terminal emulation and network file sharing technologies to help individuals and corporations bridge dissimilar operating systems to access legacy information from anywhere, at any time. Using standard Internet technologies, Century Software's suite of TinyTERM products offers intuitive user interfaces and powerful tools to access UNIX and IBM host data and applications to virtually anyone.



Founded in 1983, cfSOFTWARE is a privately held company located in Des Plaines, Illinois. We specialize in connectivity software. Our flagship products, Across the Boards® and pcMAINFRAME™, provide the industry¹s most extensive set of PC to Mainframe connectivity solutions. pcMAINFRAME Express and the APPX Router continue to expand the range of the communications solutions we offer our customers.



SLEEP TIGHT: instead of driving to the office, get instant access to MVS/QuickRef's 107,000,000 lines of z/OS reference materials. MVS/QuickRef's simple, easy to understand information helps you resolve 97% of the problems affecting z/OS, CICS, DB/2, IDMS, ADABAS, JCL, JES, COBOL. It has the answers to MVS abend codes, z/OS error messages plus 1,260 software products from IBM, CA, BMC and 72 other independent software vendors.
Join the thousands of users world-wide who have increased their productivity using MVS/QuickRef.

Cincom Systems


Cincom Systems has provided software to simplify and improve business operations and customer communications for more than 42 years. Cincom enterprise technologies include: sales automation software, application development software, document automation software, manufacturing ERP software, contact center software, database management software, and healthcare software

Circle Computer Group


Circle is the global leader in providing migration solutions, which allow clients to move IBM® mainframe applications running on legacy infrastructures to DB2® and other strategic platforms.
Circle solutions can:

  • Help drive an SOA strategy by centralising data into a DB2 repository for access by multiple applications
  • Drive down cost by eliminating expensive licences for legacy database management systems and related tools
  • Extend the return on investment in the many business applications still servicing user requirements
  • Open up those applications for web enablement and other business and technology requirements
  • Reduce the risk and workload associated with system rewrite and manual conversion


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Dr. Radut Consulting