Simon Willison’s Weblog

Implementing a syntax-higlighting JavaScript editor in JavaScript. Appropriately subtitled “a brutal odyssey to the dark side of the DOM tree”. Some seriously clever trickery going on here. 4th April 2008, 8:27 am

EditArea. Impressive JavaScript source code editor, with syntax highlighting, brace matching, search and replace and more. 1st January 2008, 12:09 pm

AppJet: Instant Web Programming. Another attempt at simple server-side JavaScript application hosting. Worth checking out for the impressive syntax highlighting code editor, which even matches braces. 15th December 2007, 3:37 pm

CodePress. “Real Time Syntax Highlighting Editor written in JavaScript”. 7th August 2007, 10:49 pm