Carl Sassenrath (born 1957 in California) is an architect of operating systems and computer languages. He brought multitasking to personal computers in 1985 with the creation of the Amiga Computer operating system kernel, and he is currently the designer of the REBOL computer language.
Rasmus Lerdorf (born 22 November 1968) is a Greenlandic-Danish programmer. He created the PHP scripting language, authoring the first two versions of the language and participated in the development of later versions
Anders Hejlsberg (born December 1960) is a prominent Danish software engineer who co-designed several popular and commercially successful programming languages and development tools. He was the original author of Turbo Pascal and the chief architect of Delphi. He currently works for Microsoft as the lead architect of C# and core developer on TypeScript.