This is a collection of on-line spell checkers on the internet.
SpellCheck offers an on-line spelling check for English texts or single words as well as upper case, lower case, proper case and further text tools.
This is an interactive spelling check for texts in nearly every European language. The tool is open source. A web site spelling check is offered, too.
This web site presents a simple copy-and-paste spelling checker in English (BE and AE), French, German, Italian and Spanish.
WebSiteOptimization.com offers a complete web site spelling check summary via email for free trial.