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- Jim Hall - started the FreeDOS project
- David Heinemeier Hansson - created the Ruby on Rails framework for developing web applications.
- David Albert Huffman - created the Huffman Code compression algorithm.
- Rebecca Heineman - Author of Bard's Tale III: Thief of Fate and Dragon Wars.
- Anders Hejlsberg - Turbo Pascal, Borland Delphi, C#
- Ted Henter - founder of Henter-Joyce (now part of Freedom Scientific) creator of Jaws, screen reader software for blind people
- Andy Hertzfeld - co-creator of Macintosh, co-founder of General Magic, co-founder of Eazel
- Rich Hickey - creator of Clojure language
- D. Richard Hipp - creator of SQLite
- C. A. R. Hoare - first implementation of quicksort, ALGOL 60 compiler, Communicating sequential processes
- James Holmes - Committer on Struts project, create of Struts Console
- Grace Hopper - Harvard Mark I computer, FLOW-MATIC, COBOL
- Dave Hyatt - co-author of Mozilla Firefox
Read more about this topic: List Of Programmers