This is a grammar checker free tool also offers multiple integrated options. Slick write is grammar checker app which highlight mistakes made in your paragraphs such as redundant sentences, passive voice, adverbs, and common starting words, repeated words, etc. Correct Grammar mistakes regarding subject, verb, and agreement.
It is one of the best free grammar checker software that works on uses patent-pending technology that will enable you to correct grammar mistakes, spelling, and misused word mistakes. The Ginger Grammar Checker allows you to write better English.
Prowriting Aid is one of the best grammar checker software that checks sentence quality, checks punctuation, passive and active voice usage.