Grammarly is a Home & Education software developed by Applied Linguistics LLC. After our trial and test, the software is proved to be official, secure and free. Here is the official description for Grammarly:

Marydown Editor: Grammarly is your personal proofreader and grammar coach. Check your writing for grammar, punctuation, style and more.

Features and Benefits

-150+ Grammar Checks
Check your text for use of grammar rules you never knew existed. Get accurate error explanations.

-Plagiarism Detection
Find borrowed text before it gets you into trouble. Automatically generate references.

-Vocabulary Enhancement
Use words that make an Impact. Liven up your sentences and Improve Readability with context-optimized synonyms.

-Contextual Spell Check
SPOT correctly spelled words used