PHP SPELL CHECK - AN INNOVATIVE SPELLCHECKING SCRIPT FOR PHP4 PHP5
* A fully featured spelling dialog just like MS Word
* Contextual As-You Type PHP Spell Checking with red wiggly underlines in your text boxes on all major browsers.
* Did-You-Mean search phrase suggestions in PHP and JavaScript
* A PHP Spell-checking Class with no dependencies on server components or plug-ins

DEVELOPER FRIENDLY
* Copy Paste Installation on Mac , Windows IIS/Apache Linux Apache.
* Hello World in minutes.
* No PSpell or ASpell required on your server
* Broad Compatibility with all major web browsers including Internet Explorer, Safari, Gecko, FireFox and Mobile Browsers.
* Well Documented PHP and JavaScript APIs
* Lots of Tutorials With Source Code at http://www.phpspellcheck.com

PERFORMANCE AND STABILITY
* A high performance PHP spelling engine which can be scaled to large user bases.
* Works on load balanced servers without extra setup.
* Bandwidth compression of over 80% - even with large documents
* Spell check over 30,000 words a second using raw PHP

ACCURATE SUGGESTIONS ?
The correct suggestion is on top the vast majority of the time because PHP Spell Check is aware of:
* International phonetics
* Human-Keyboard interaction
* Dyslexic user behavior

FREE SPELLING DICTIONARIES
* English (International, UK, USA, Canada)
* Medical English
* Legal English
* Scientific and Engineering English
* Danish Dictionary (Dansk)
* Dutch Flemish (Nederlands)
* German Dictionary (Deutsch)
* French (Francais)
* Italian (Italiano)
* Portuguese (Portugues - Brazil and Portugal)
* Spanish (Espanol - Americas Spain)
* Swedish (Svenska)

LINGUISTIC CONTROL
* Add words to PHP Spell Check from Files, Databases and Arrays
* Ban words Enforce Spelling correction
* Legal Spell Check
* Spell-check in multiple languages simultaneously.

Retrieved from http://www.phpspellcheck.com/Features