SHARE Inc. is a volunteer-run

user group A users' group (also user's group or user group) is a type of Club (organization), club focused on the use of a particular technology, usually (but not always) computer-related. Overview Users' groups started in the early days of Mainframe compu ...

for

IBM International Business Machines Corporation (using the trademark IBM), nicknamed Big Blue, is an American Multinational corporation, multinational technology company headquartered in Armonk, New York, and present in over 175 countries. It is ...

mainframe computer A mainframe computer, informally called a mainframe or big iron, is a computer used primarily by large organizations for critical applications like bulk data processing for tasks such as censuses, industry and consumer statistics, enterprise ...

s that was founded in 1955 by

Los Angeles Los Angeles, often referred to by its initials L.A., is the List of municipalities in California, most populous city in the U.S. state of California, and the commercial, Financial District, Los Angeles, financial, and Culture of Los Angeles, ...

-area users of the

IBM 704 The IBM 704 is the model name of a large digital computer, digital mainframe computer introduced by IBM in 1954. Designed by John Backus and Gene Amdahl, it was the first mass-produced computer with hardware for floating-point arithmetic. The I ...

computer system. It evolved into a forum for exchanging technical information about

programming language A programming language is a system of notation for writing computer programs. Programming languages are described in terms of their Syntax (programming languages), syntax (form) and semantics (computer science), semantics (meaning), usually def ...

operating system An operating system (OS) is system software that manages computer hardware and software resources, and provides common daemon (computing), services for computer programs. Time-sharing operating systems scheduler (computing), schedule tasks for ...

database system In computing, a database is an organized collection of data or a type of data store based on the use of a database management system (DBMS), the software that interacts with end users, applications, and the database itself to capture and anal ...

s, and user experiences for enterprise users of small, medium, and large-scale IBM computers such as IBM S/360, IBM S/370,

zSeries IBM Z is a family name used by IBM for all of its z/Architecture mainframe computers. In July 2017, with another generation of products, the official family was changed to IBM Z from IBM z Systems; the IBM Z family will soon include the newes ...

, pSeries, and xSeries. Despite the capitalization of all letters in the name, the official website says "SHARE is not an acronym; it's what we do."

Overview

A major resource of SHARE from the beginning was the SHARE library. Originally, IBM distributed what software it provided in source form and systems programmers commonly made small local additions or modifications and exchanged them with other users. The SHARE library and the process of distributed development it fostered was one of the major origins of

open source Open source is source code that is made freely available for possible modification and redistribution. Products include permission to use and view the source code, design documents, or content of the product. The open source model is a decentrali ...

software. In 1959 SHARE released the SHARE Operating System (SOS), originally for the IBM 709 computer, later ported to the

IBM 7090 The IBM 7090 is a second-generation Transistor computer, transistorized version of the earlier IBM 709 vacuum tube mainframe computer that was designed for "large-scale scientific and technological applications". The 7090 is the fourth member o ...

. SOS was one of the first instances of " commons-based peer production" now widely used in the development of

free and open-source software Free and open-source software (FOSS) is software available under a license that grants users the right to use, modify, and distribute the software modified or not to everyone free of charge. FOSS is an inclusive umbrella term encompassing free ...

such as

Linux Linux ( ) is a family of open source Unix-like operating systems based on the Linux kernel, an kernel (operating system), operating system kernel first released on September 17, 1991, by Linus Torvalds. Linux is typically package manager, pac ...

and the

GNU project The GNU Project ( ) is a free software, mass collaboration project announced by Richard Stallman on September 27, 1983. Its goal is to give computer users freedom and control in their use of their computers and Computer hardware, computing dev ...

. In 1963 SHARE participated with IBM in the development of the

PL/I PL/I (Programming Language One, pronounced and sometimes written PL/1) is a procedural, imperative computer programming language initially developed by IBM. It is designed for scientific, engineering, business and system programming. It has b ...

programming language as part of the "3x3" committee. In 1969, members of SHARE in Europe formed a European Chapter of the organisation, which was formalised in 1966 as the "Share European Association (SEAS)", later SHARE Europe (SEAS). The last meeting of 1994 was jointly held with G.U.I.D.E. At this meeting it was decided to dissolve both SHARE Europe and G.U.I.D.E. and establish the new European IBM users group GSE (Guide Share Europe). SHARE later incorporated as a non-profit corporation based in

Chicago, Illinois Chicago is the List of municipalities in Illinois, most populous city in the U.S. state of Illinois and in the Midwestern United States. With a population of 2,746,388, as of the 2020 United States census, 2020 census, it is the List of Unite ...

and is located at 330 N. Wabash Ave. The organization produces a newsletter and conducts two major educational meetings per year. In September 1999, GUIDE International, the other major IBM mainframe users group, ceased operation. Although SHARE did not formally take over GUIDE in the United States, many of the activities and projects that were undertaken under the aegis of GUIDE moved to SHARE, and GUIDE suggested to its members that they join SHARE. In August 2000, SHARE took over the guide.org domain name. In 2005 SHARE's membership of 20,000 represented some 2,300 enterprise IBM customers.

References

External links

*
SHARE Library

Index of SHARE, Inc. Records, 1955-1994
at

Charles Babbage Institute The IT History Society (ITHS) is an organization that supports the history and scholarship of information technology by encouraging, fostering, and facilitating archival and historical research. Formerly known as the Charles Babbage Foundation, ...

, University of Minnesota.
Index of GUIDE International Records, 1970-1992
at

, University of Minnesota. {{IBM FOSS IBM user groups User groups Free software culture and documents Organizations based in Chicago Organizations established in 1955 1955 establishments in California

Overview

See also

References

Further reading

External links