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).

Features:
- Easy to integrate, only one script include and one function call
- Tabulation support (allow to write well formated source code)
- Search and replace (with regexp)
- Customizable real-time syntax highlighting (currently: PHP, CSS, Javascript, Python, HTML, XML, VB, C, CPP, Pascal, Basic, Brainf*ck)
- Auto-indenting new lines
- Line numerotation
- Multilanguage support (currently: Croatian, Danish, English, French, German, Italian, Japanese, Polish, Portuguese)
- Possible PHP gzip compression (compress the 12 core files to one file of ~20Ko)
- 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 "protype" and "mootools"'s like libraries.