EditArea is a free javascript editor for source code. It allows to write well formated source code with line numerotation, tab support, search & replace (with regexp) and live syntax highlighting (customizable). PHP, CSS, Javascript, Paython, Html, XML, VB all supported.

Main Features of EditArea:
- Easy to integrate, only one script include and one function call
- Tabulation support (allow to write well formated source code)
- Customizable real-time syntax highlighting (currently: PHP, CSS, Javascript, Python, HTML, XML, VB, C, CPP, SQL, Pascal, Basic, Brainf-ck, and probably more...)
- Word-wrap support
- Search and replace (with regexp)
- Auto-indenting new lines
- Line numerotation
- Multilanguage support (currently: Croatian, Czech, Danish, Dutch, English, Esperanto, French, German, Italian, Japanese, Macedonian, Polish, Portuguese, Russian, Slovak, Spanish, and probably more...)
- Possible PHP gzip compression (compress the 12 core files to one file of ~30Ko)
- Allow multiple instances
- Full screen mode
- Possible plugin integration
- Possible save and load callback functions
- Possible dynamic content management
- Can work in the same environment than "prototype" and "mootools"'s like libraries.