If, like me, you have used the many online grammar checkers, you will find they are limited in scope and use. After all, the output depends on how the program is developed and the underlying database of language tools. Most programs work on simple logic. Fuzzy logic and advanced intelligence would help but these are expensive and are not used in most such grammar checkers, rendering them virtually useless if you want refined proof reading and correction of your text.
 
Of the many such tools online, you will find this English grammar corrector is in an altogether different category. It possesses human intelligence.
      
The way English grammar has evolved, it has regular rules and exceptions as regards singular and plural, order of words and contextual usage of phrases and clauses. Computer logic is straightforward and simply cannot handle the intricacies of a highly grammar. You need fuzzy logic and advanced artificial intelligence if the grammar checker is to be of any use. Luckily you now have access to a grammar corrector online tool with underlying advanced intelligence and database of language tools. In conjunction these work together to provide intuitive, human intelligence like correction to your sentences, however complex they may be, and provide the right interpretation—the same way a human being expert in grammar would go through your work.  There are two benefits to using the free English grammar tool. You can polish your work and then use the tool to learn about the finer nuances of grammar.