[Athen] Grammar Checking Software

[Jeffrey Dell]

Does anyone have any experience with grammar checking software?  I've
had students ask me about software for checking grammar in the past
and All I know about was White Smoke but had very little info about
it.  I just was looking again today and found a review of 4 software
packages.  Is anyone currently supporting the use of software like
this and how effective do your students find it?
Thanks
Jeff