Grammarly and Ginger are two reputable English grammar checkers available online, as of 2015. Users can integrate Grammarly with their Microsoft Office programs, while Ginger is available as both a computer program and a mobile app for use on devices such as smartphones and tablets.
In addition to analyzing text for over 250 types of grammatical errors, Grammarly offers suggestions for alternative words users can choose to boost the readability and quality of their writing. The program also comes with a contextual spellchecker, which is able to spot instances where writers use the wrong version of a word. Ginger suggests ways to rephrase sentences.