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List of Internet pioneers

Instead of having a single inventor, the Internet was developed by many people over many years. The following people are Internet pioneers who have been recognized for their contribution to its early and ongoing development. These contributions include theoretical foundations, building early networks, specifying protocols, and expansion beyond a research tool to wide deployment.

Birth of the Internet plaque
A plaque commemorating the "Birth of the Internet" was dedicated at a conference on the history and future of the Internet on 28 July 2005 and is displayed at Stanford University. Background The seminal paper on internetworking, "A Protocol for Packet Network Intercommunication", published in 1974 by Vint Cerf, at Stanford University, and Bob Kahn, at ARPA, acknowledges a number of early members of the International Network Working Group (INWG): "The authors wish to thank a number of colleagues for helpful comments during early discussions of international network protocols, especially R. Metcalfe, R. Scantlebury, D. Walden, and H. Zimmerman; D. Davies and L. Pouzin who constructively commented on the fragmentation and accounting issues; and S. Crocker who commented on the creation and destruction of associations".'' Subsequently, ARPA funded another working group to develop TCP for use for internetworking. Over two hundred Internet Experiment Notes (IEN) were produced, documenting the group's work. Only a few of the people who authored notes, or who participated in the work or whose work was referenced in the notes are named on the "Birth of the Internet" plaque. Robert Metclafe, Yogen Dalal and John Shoch contributed to discussions leading up to the splitting of TCP, At that time, the "Final Report of the Internetwork TCP Project" was to be written by: Cerf, who led the work at Stanford University and had moved to ARPA to manage the program with Kahn; Peter T. Kirstein, who led the work at University College London (UCL); and Paal Spilling, who led the work at the Norwegian Defence Research Establishment (NDRE); and, in addition, three of their team members who were Stephen Edge and Andrew Hinchley at UCL, who authored the first IEN (along with their colleague Chris Bennett who authored several other IENs), and Richard Karp at Stanford. Postel published version 4 later that year, in which TCP and IP were split into separate protocols, the preface of which notes "This revised edition of the version 4 specification was influenced by the comments of the following: Vint Cerf, Dick Watson, Carl Sunshine, Danny Cohen, Dave Clark, John Day, Gary Grossman, Jim Mathis, Bill Plummer, Jack Haverty, and the whole TCP Working Group." The bibliography of each of the TCP versions references papers published by many more researchers active in the field at the time. Cerf has discussed the role of some of the participants in his oral history, including Roger Scantlebury and Donald Davies; his graduate students at Stanford, Judy Estrin, Richard Karp, Yogan Dalal, and Carl Sunshine; and visiting researchers Gérard Le Lann, Dag Belsnes, James Mathis, Darryl Rubin, and Ronald Crane. Inscription The text printed and embossed in black into the brushed bronze surface of the Stanford plaque reads: BIRTH OF THE INTERNET THE ARCHITECTURE OF THE INTERNET AND THE DESIGN OF THE CORE NETWORKING PROTOCOL TCP (WHICH LATER BECAME TCP/IP) WERE CONCEIVED BY VINTON G. CERF AND ROBERT E. KAHN DURING 1973 WHILE CERF WAS AT STANFORD'S DIGITAL SYSTEMS LABORATORY AND KAHN WAS AT ARPA (LATER DARPA). IN THE SUMMER OF 1976, CERF LEFT STANFORD TO MANAGE THE PROGRAM WITH KAHN AT ARPA. THEIR WORK BECAME KNOWN IN SEPTEMBER 1973 AT A NETWORKING CONFERENCE IN ENGLAND. CERF AND KAHN'S SEMINAL PAPER WAS PUBLISHED IN MAY 1974. CERF, YOGEN K. DALAL, AND CARL SUNSHINE WROTE THE FIRST FULL TCP SPECIFICATION IN DECEMBER 1974. WITH THE SUPPORT OF DARPA, EARLY IMPLEMENTATIONS OF TCP (AND IP LATER) WERE TESTED BY BOLT BERANEK AND NEWMAN (BBN), STANFORD, AND UNIVERSITY COLLEGE LONDON DURING 1975. BBN BUILT THE FIRST INTERNET GATEWAY, NOW KNOWN AS A ROUTER, TO LINK NETWORKS TOGETHER. IN SUBSEQUENT YEARS, RESEARCHERS AT MIT AND USC-ISI, AMONG MANY OTHERS, PLAYED KEY ROLES IN THE DEVELOPMENT OF THE SET OF INTERNET PROTOCOLS. KEY STANFORD RESEARCH ASSOCIATES AND FOREIGN VISITORS VINTON CERF DAG BELSNES JAMES MATHIS RONALD CRANE JUNIOR BOB METCALFE YOGEN DALAL DARRYL RUBIN JUDITH ESTRIN JOHN SHOCH RICHARD KARP CARL SUNSHINE GERARD LE LANN KUNINOBU TANNO DARPA ROBERT KAHN COLLABORATING GROUPS BOLT BERANEK AND NEWMAN WILLIAM PLUMMER • GINNY STRAZISAR • RAY TOMLINSON MIT NOEL CHIAPPADAVID CLARKSTEPHEN KENTDAVID P. REED NDRE YNGVAR LUNDHPAAL SPILLING UNIVERSITY COLLEGE LONDON FRANK DEIGNAN • MARTINE GALLAND • PETER HIGGINSON ANDREW HINCHLEY • PETER KIRSTEINADRIAN STOKES USC-ISI ROBERT BRADENDANNY COHEN • DANIEL LYNCH • JON POSTEL ULTIMATELY, THOUSANDS IF NOT TENS TO HUNDREDS OF THOUSANDS HAVE CONTRIBUTED THEIR EXPERTISE TO THE EVOLUTION OF THE INTERNET. DEDICATED 28 July 2005 == J. C. R. Licklider ==
J. C. R. Licklider
Joseph Carl Robnett Licklider (1915–1990) was a faculty member of Massachusetts Institute of Technology (MIT), and researcher at Bolt, Beranek and Newman. He developed the idea of a universal computer network at the Information Processing Techniques Office (IPTO) of the United States Department of Defense Advanced Research Projects Agency (ARPA). He headed the IPTO from 1962 to 1963, and again from 1974 to 1975. His 1960 paper "Man-Computer Symbiosis" envisions that mutually-interdependent, "living together", tightly coupled human brains and computing machines would prove to complement each other's strengths. In 2013, Licklider was inducted into the Internet Hall of Fame "pioneers" award by the Internet Society. ==Paul Baran==
Paul Baran
Paul Baran (1926–2011) developed the field of redundant distributed networks while conducting research at RAND Corporation starting in 1960 when Baran began investigating the development of large-scale survivable communication networks. This led to a series of papers titled "On Distributed Communications" that in 1964 described a detailed architecture for distributed adaptive message block switching. The proposal was composed of three key ideas: use of a decentralized network with multiple paths between any two points; dividing user messages into message blocks; and delivery of these messages by store and forward switching. Baran's network design was never built; it was intended for voice communication using low-cost electronics and did not feature software switches. Baran provided input to the ARPANET project on distributed communications and dynamic routing. Baran received the inaugural SIGCOMM Award in 1989, the inaugural IEEE Internet Award in 2000 and the inaugural Internet Hall of Fame "pioneers" award from the Internet Society in 2012. ==Donald Davies==
Donald Davies
Donald Davies (1924–2000) independently invented and named the concept of packet switching for data communications in 1965 at the United Kingdom's National Physical Laboratory (NPL). He refined his ideas in a paper written in 1966, which included the first description of an interface computer to act as a router. Later in 1966, he established a team which produced a design for a local-area network to serve the needs of NPL and prove the feasibility of packet switching while developing a more formal design proposal for a national network based on a high-level network connected to local networks. Davies built the local-area NPL network, the first implementation of packet switching in early 1969 and the first to use high-speed links. His work influenced the ARPANET and research in Europe and Japan. He carried out simulation work on datagram networks on a scale to provide data communication to much of the United Kingdom and designed an adaptive method of congestion control, which he called isarithmic. In the 1970s, Davies worked on internetworking and secure communication. He was acknowledged by Vint Cerf and Bob Kahn in their seminal 1974 paper on internetworking, A Protocol for Packet Network Intercommunication. Davies received the inaugural IEEE Internet Award in 2000 and the inaugural Internet Hall of Fame "pioneers" award from the Internet Society in 2012. == Roger Scantlebury ==
Roger Scantlebury
Roger Scantlebury (born 1936) led the pioneering work to implement packet switching and associated communication protocols at the NPL in the late 1960s. Scantlebury and his colleague Keith Bartlett were the first to describe the term protocol in a modern data-communications context in an April 1967 memorandum entitled A Protocol for Use in the NPL Data Communications Network. He proposed the use of packet switching in the ARPANET at the inaugural Symposium on Operating Systems Principles in October 1967 and convinced Larry Roberts the economics were favorable to message switching. During the 1970s, he was a major figure in the International Network Working Group (INWG) through which he was an early contributor to concepts used in the Transmission Control Program, which became part of the Internet protocol suite.'' He was acknowledged by Cerf and Kahn in their seminal 1974 paper on internetworking.'' ==Bob Taylor==
Bob Taylor
Robert W. Taylor (1932–2017) was director of ARPA's Information Processing Techniques Office (IPTO) from 1966 through 1969, where he convinced ARPA to fund a computer network. The 1968 paper, "The Computer as a Communication Device", that he wrote together with J.C.R. Licklider starts out: "In a few years, men will be able to communicate more effectively through a machine than face to face." And while their vision would take more than "a few years", the paper lays out the future of what the Internet would eventually become. From 1970 to 1983, he managed the Computer Science Laboratory of the Xerox Palo Alto Research Center (PARC), where technologies such as Ethernet and the Xerox Alto were developed. He was the founder and manager of Digital Equipment Corporation's Systems Research Center until 1996. ==Larry Roberts==
Larry Roberts
Lawrence G. "Larry" Roberts (1937–2018) was an American computer scientist. After earning his PhD in electrical engineering from MIT in 1963, Roberts continued to work at MIT's Lincoln Laboratory where in 1965 he connected Lincoln Lab's TX-2 computer to the SDC Q-32 computer in Santa Monica. In 1967, he became a program manager in the ARPA Information Processing Techniques Office (IPTO), where he managed the development of the ARPANET, the first wide area packet switching network. Roberts applied Donald Davies' concepts of packet switching in the ARPANET, and sought input from Paul Baran and other researchers on network design. In 2012, Roberts was inducted into the Internet Hall of Fame by the Internet Society. ==Leonard Kleinrock==
Leonard Kleinrock
Leonard Kleinrock (born 1934) studied the optimization of message delays in communication networks using queueing theory in his Ph.D. thesis, Message Delay in Communication Nets with Storage, at MIT in 1962. After this, he moved to UCLA. Kleinrock became involved in the ARPANET project in early 1967. In 1969, under his contract with ARPA to run the Network Measurement Center, a team at UCLA connected a computer to an Interface Message Processor (IMP), becoming the first node on the network. Building on his earlier work on queueing theory, during the 1970s, Kleinrock carried out theoretical work to measure, simulate and mathematically model the performance of the ARPANET. Kleinrock published hundreds of research papers, which ultimately launched a new field of research on the theory and application of queuing theory to computer networks. His work on hierarchical routing in the late 1970s with student Farouk Kamoun remains critical to the operation of the Internet today. In 2012, Kleinrock was inducted into the Internet Hall of Fame by the Internet Society. == Frank Heart ==
Frank Heart
Frank Heart (1929–2018) worked for Bolt, Beranek and Newman (BBN) from 1966 to 1994, during which time he managed the team that designed and implemented the Interface Message Processors (IMPs), the routing computers for the ARPANET. ==Bob Kahn==
Bob Kahn
Robert E. "Bob" Kahn (born 1938) is an American engineer and computer scientist. After earning a Ph.D. degree from Princeton University in 1964, he worked for AT&T Bell Laboratories, as an assistant professor at MIT. He moved to Bolt Beranek & Newman (BBN) where he was the principal designer of the IMP subnetwork and the IMP-Host protocol for the ARPANET. In 1972, he joined the IPTO within ARPA, where he worked on both satellite packet networks (which led to SATNET) and ground-based radio packet networks (which led to PRNET), and recognized the value of being able to communicate across heterogenous networks. Along with Vint Cerf, he authored the seminal paper on internetworking, A Protocol for Packet Network Intercommunication, in 1974. Kahn left ARPA in 1986 to found the Corporation for National Research Initiatives (CNRI), a nonprofit organization providing leadership and funding for research and development of the National Information Infrastructure. == David Walden ==
David Walden
David Walden (1942–2022) worked for BBN where he implemented the packet switching and routing software for the ARPANET IMP. He proposed what became known as the Walden message switching protocol, and co-authored the ARPANET Completion Report with Frank Heart, Alex Mckenzie, and J. McQuillian. == Ray Tomlinson ==
Ray Tomlinson
Ray Tomlinson (1941–2016) worked for BBN. He carried out the first experimental message transfer between separate computer systems on the ARPANET in 1971. His message was sent from one DEC PDP-10 computer to another PDP-10, placed next to each other. Tomlinson initiated the use of the @ sign to separate the names of the user and the user's machine. Tomlinson's idea for network mail was adopted on the ARPANET, which significantly increased network traffic. As a result, he has been called "the inventor of modern email". The use of the File Transfer Protocol (FTP) for network mail on the ARPANET was proposed in in March 1973. Through in November 1977, a standardized framework was developed for "electronic mail" using FTP mail servers on the ARPANET. Tomlinson discussed a network mail protocol among the International Network Working Group in INWG Protocol note 2, in September 1974, although it was never adopted. Furthermore, he participated in the initial design of TCP during 1973–74, and version 3 in January 1978, which says that many of the changes introduced in that version were first described by Tomlinson the previous year when he put forward a "Proposal for TCP 3". Tomlinson received the IEEE Internet Award in 2004, with David H. Crocker, for networked email. == Steve Crocker ==
Steve Crocker
Steve Crocker (born 1944) has worked in the ARPANET and Internet communities since their inception. As a UCLA graduate student in the 1960s, he led the creation of the ARPANET Network Control Protocol. He also created the Request for Comments (RFC) series, authoring the very first RFC and many more. He was instrumental in creating the ARPA Network Working Group, the forerunner of the modern Internet Engineering Task Force. In 1972, Crocker moved to the Advanced Research Projects Agency (ARPA) to become a program manager. He formed the International Network Working Group (INWG), then his research interests shifted to artificial intelligence. He was acknowledged by Cerf and Kahn in their seminal 1974 paper on internetworking. He was a founder and director of the Computer Science Laboratory at The Aerospace Corporation and a vice president at Trusted Information Systems. In 1994, Crocker was one of the founders and chief technology officer of CyberCash, Inc. He has also been an IETF security area director, a member of the Internet Architecture Board, chair of the Internet Corporation for Assigned Names and Numbers (ICANN) Security and Stability Advisory Committee, a board member of the Internet Society and numerous other Internet-related volunteer positions. Crocker is chair of the board of ICANN. For this work, Crocker was awarded the 2002 IEEE Internet Award "for leadership in creation of key elements in open evolution of Internet protocols". In 2012, Crocker was inducted into the Internet Hall of Fame by the Internet Society. == Jon Postel ==
Jon Postel
Jon Postel (1943–1998) was a researcher at the Information Sciences Institute (ISI) at the University of Southern California (USC) . He was editor of much of the early the RFC series as well as versions 3 and 4 of TCP/IP in January 1978 and February 1979, and the final version of TCP and Internet Protocol, which were published in January 1980 by DARPA on behalf of the Defense Communications Agency. The International Network Working Group (INWG) discussed protocols for electronic mail in 1979, which was referenced by Postel in his early work on Internet email. Postel first proposed an Internet Message Protocol in 1979 as part of the Internet Experiment Note (IEN) series. In September 1980, Postel and Suzanne Sluizer published which proposed the Mail Transfer Protocol to enable servers to transmit computer mail on the ARPANET as a replacement for FTP. published in May 1981 removed all references to FTP. In November 1981, Postel published describing the Simple Mail Transfer Protocol (SMTP) protocol, which was updated by in August 1982. Addresses were extended to by in February 1982. , written by David H. Crocker, defined the format for messages. The Internet Society's Postel Award is named in his honor, as is the Postel Center at the Information Sciences Institute. His obituary was written by Vint Cerf and published as RFC 2468 in remembrance of Postel and his work. In 2012, Postel was inducted into the Internet Hall of Fame by the Internet Society. == Vint Cerf ==
Vint Cerf
Vinton G. "Vint" Cerf (born 1943) is an American computer scientist. He is recognized as one of "the fathers of the Internet", sharing this title with Bob Kahn. He earned his Ph.D. from UCLA in 1972. At UCLA he worked in Professor Leonard Kleinrock's networking group that connected the first two nodes of the ARPANET and contributed to the ARPANET host-to-host protocol, the Network Control Program. Cerf was an assistant professor at Stanford University from 1972 to 1976, where he conducted research on packet network interconnection protocols and co-designed the DoD TCP/IP protocol suite. He authored the seminal paper on internetworking, A Protocol for Packet Network Intercommunication, in May 1974 with Bob Kahn; the first specification of TCP with Yogen Dalal and Carl Sunshine in December that year; and edited the second version of TCP in March 1977. His many awards include the National Medal of Technology, the Presidential Medal of Freedom, and membership in the National Academy of Engineering and the Internet Society's Internet Hall of Fame. == Douglas Engelbart ==
Douglas Engelbart
Douglas Engelbart (1925–2013) was an early researcher at the Stanford Research Institute (SRI). His Augmentation Research Center laboratory became the second node on the ARPANET in October 1969, and SRI became the early Network Information Center, which evolved into the domain name registry. Engelbart was a committed, vocal proponent of the development and use of computers and computer networks to help cope with the world's increasingly urgent and complex problems. He is best known for his work on the challenges of human–computer interaction, resulting in the invention of the computer mouse, and the development of hypertext, networked computers, and precursors to graphical user interfaces. == John Klensin ==
John Klensin
John Klensin's involvement with Internet began in 1969, when he worked on the File Transfer Protocol. Klensin was involved in the early procedural and definitional work for DNS administration and top-level domain definitions and was part of the committee that worked out the transition of DNS-related responsibilities between USC-ISI and what became ICANN. His career includes 30 years as a principal research scientist at MIT, a stint as INFOODS project coordinator for the United Nations University, Distinguished Engineering Fellow at MCI WorldCom, and Internet Architecture Vice President at AT&T; he is now an independent consultant. In 1992 Randy Bush and John Klensin created the Network Startup Resource Center, helping dozens of countries to establish connections with FidoNet, UseNet, and when possible the Internet. In 2003, he received an International Committee for Information Technology Standards Merit Award. In 2007, he was inducted as a Fellow of the Association for Computing Machinery for contributions to networking standards and Internet applications. In 2012, Klensin was inducted into the Internet Hall of Fame by the Internet Society. == Elizabeth Feinler ==
Elizabeth Feinler
Elizabeth J. "Jake" Feinler (born 1931) was a staff member of Doug Engelbart's Augmentation Research Center (ARC) at SRI and PI for the Network Information Center (NIC) for the ARPANET and the Defense Data Network (DDN) from 1972 until 1989. In 2012, Feinler was inducted into the Internet Hall of Fame by the Internet Society. == Louis Pouzin ==
Louis Pouzin
Louis Pouzin (born 1931) is a French computer scientist. He built the first implementation of a wide-area datagram packet-communications network, CYCLADES, that demonstrated the feasibility of internetworking, which he called a "catenet". He was acknowledged by Vint Cerf and Bob Kahn in their seminal 1974 paper on internetworking''. In 1997, Pouzin received the ACM SIGCOMM Award for "pioneering work on connectionless packet communication". He was named a Chevalier of the Legion of Honor by the French government on 19 March 2003. In 2012, Pouzin was inducted into the Internet Hall of Fame by the Internet Society. == Hubert Zimmermann ==
Hubert Zimmermann
Hubert Zimmerman (1941–2012) was a French software engineer who pioneered internetworking with Louis Pouzin. He contributed to early discussions on the Transmission Control Program, and was acknowledged by Cerf and Kahn in their seminal 1974 paper on internetworking. == Gérard Le Lann ==
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