I guess if you’re really into grammar – as fan who is proficient in English or as an advanced English Language Learner who thinks it could be helpful – it’s a site to bookmark. For someone who is definitely not into sentence diagramming, I nevertheless thought it was pretty cool and found it to be very accurate the several times I tried it out:
I also noticed the site had a number of other features, and some of them seemed particularly interesting to me.
One was a visual thesaurus. It seemed a little less “busy” than others I have on The Best Reference Websites For English Language Learners list, but I have to say that in testing it out not all of the displays looked as attractive or as accurate as this one:
They also have a text editor that seems to provide decent feedback on writing that’s submitted, and I’m adding that resource to The Best Online Tools That Can Help Students Write An Essay:
You get to use all the tools for free during an extended period, and then they just ask you to pay what you think it’s worth.
All in all, it’s a very intriguing site.