I have checked out these free online grammar checkers the first two are honest and free:
- This one is friendly and helpful: http://www.whitesmoke.com/free-online-checker
- This one seems complete and free: Free Online Spell Checker for Spelling, Grammar & Style!
- This one lists the error count by category, but provides not corrections: (expensive after the free trial credit card required) Grammarly | Instant Grammar Check - Online Proofreading
- I did not test one but it has many references: http://www.paperrater.com/
