Nanospell is the alternative, ad free 'CKEditor Spell check' plug-in . See an online demo with javascript source-code at http://ckeditor-spellcheck.nanospell.com/#try . Nanospell has free developer licenses for PHP, ASP ASP.Net and Java.
'jQuery spell check' lets you add spellchecking support to any web-app using pure jQuery Code. Try a live example / demo at http://www.javascriptspellcheck.com/jquery-spell-check/ . Free dev licenses for PHP, ASP , ASP.Net and Java coders.
An open source demonstration of the CKEditor spellcheck plug-in. Nanospell provide an easy way to get spellchecking working within Ckeditor without ad pop-ups. A secure alternative to spellchecker.net https://github.com/nanospell
Check virtually any website for broken link and spelling mistakes, fast! InSite is powerful, yet easy to use. Just enter a website URL and click Go! It checks all links in one pass. Find problems with your website you didn't know were there.
Collect URL scans internet like a search engine bot. Starting from the user entered URL, it lists all the links on the URL. Then it recursively scans all the links in the list. User can limit Collect URL to collect single domain only.
A Github Project containing tutorials and source code to help programmers implement the NanoSpell TinyMce Spellchecker. Contains HTML and Javascript code which constitute a live demo for web developers.