ckeditor

NanoSpell is an open source solution for spellchecking within CKEditor, eliminating the need for pop-up advertisements. It guarantees user data security and provides a reliable alternative to spellchecker.net.

Nanospell is an ad-free CKEditor spell check plug-in that offers free developer licenses for PHP, ASP, ASP.Net, and Java. An online demo with the javascript source code is available.