Here is a grammar checker that finds common spelling errors and grammatical mistakes in English. Simply type (or paste) your text into the window and hit the "check text" button. The main objective is to assist users in correcting their errors so that they learn from the process. Unlike other grammar checking software applications which correct mistakes without user involvement, SpellCheckPlus.com flags errors, suggests how to rectify the problem and lets the students do the work"
Great for getting students to address their individual "most common" errors. Consider telling kids they must run their work through SpellCheckPlus before submitting it. (ESL students can benefit greatly from this site.)
(Also available in French: http://bonpatron.com/ )
The site’s creators, Dr. T. Nadasdi and Dr. S. Sinclair, have extensive experience in language instruction, linguistics and humanities computing.