The PHP Spell Check component adds fast, reliable spell-checking to Web sites and intranets. Installed on either IIS and Apache Servers, it works on all major modern Web browsers. It features as-you-type spell checking with wiggly red underlines, Did-You-Mean search phrase suggestions, and a collection of free dictionaries.
WebSpellChecker is a spell check system for Web applications. It operates in a separate browser window so your work is not obstructed. Corrected text is automatically returned. It is compatible with HTML editors such as FCKeditor/CKEditor, TinyMCE, HTMLArea, TextArea, and text boxes.