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Martijn Koster

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Martijn Koster
Born1970 (age 53–54)
Occupationsoftware engineer
Known forAliweb, robots.txt

Martijn Koster (born ca 1970) is a Dutch software engineer noted for his pioneering work on Internet searching.

Koster created ALIWEB, the Internet's first search engine, which was announced in November 1993[1] while working at Nexor and presented in May 1994[2] at the First International Conference on the World Wide Web. Koster also developed ArchiePlex,[3] a search engine for FTP sites that pre-dates the Web, and CUSI,[4] a simple tool that allowed you to search different search engines in quick succession, useful in the early days of search when services provided varying results.

Koster also created the Robots Exclusion Standard.[5]


  1. ^ Martijn Koster (30 November 1993). "ANNOUNCEMENT: ALIWEB (Archie-Like Indexing for the WEB)". comp.infosystems (plaintext version). {{cite web}}: External link in |work= (help)
  2. ^ "List of PostScript files for the WWW94 advance proceedings". First International Conference on the World-Wide Web. June 1994. Title: "Aliweb - Archie-Like Indexing in the Web." Author: Martijn Koster. Institute: NEXOR Ltd., UK. PostScript, Size: 213616, Printed: 10 pages
  3. ^ "ArchiePlex". Retrieved 4 January 2013.
  4. ^ "CUSI". Retrieved 4 January 2013.
  5. ^ Martijn Koster. "Robots Exclusion". robotstxt.org.