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Grammarly Editor is an automated proofreader that corrects contextual spelling mistakes, checks for more than 250 common grammar errors, enhances vocabulary usage, and suggests citations.

Free proofreading tool for LibreOffice, Apache OpenOffice, Mozilla Firefox and Google Chrome. Also available as a standalone application. Supports about 20 languages (on different levels) and allows customization.

Ludwig is a linguistic search engine that lets you search and solve your linguistic doubts, helpsyou to turn your ideas into well written texts, makes you more independent and confident at your job.

A tool to check creative and technical writing for potential improvements.

Slick Write is a powerful, free tool that makes it easy to check your writing for grammar and spelling errors, potential stylistic mistakes, and other features of interest. Whether you're a blogger, novelist, or student writing an essay for school, Slick Write can help take your writing to the next level.

Online grammar check, proofreading and copy editing services. Our professional grammar editors will give you online proofreading and copy editing services at affordable prices.

ProWritingAid is your free online writing editor and personal writing coach. Of course it checks your grammar but it does much more to help you improve your writing:

Grammar & Spelling Check; Free Online Proofreading; No Downloads...Allows you to find those pesky mistakes and correct them before your teacher does...

VirtualWritingTutor is a 100% free grammar checker that finds common spelling and grammar errors in English for learners of English as a Second Language.

SEO Tools Centre provides SEO checker services for websites. Here you will find different types of SEO tools: backlink checker, article rewriter, keyword position checker and many others useful services!

Speckie is the first and only dedicated, real-time spell check solution for Internet Explorer and Outlook.

World's best grammar checker and spelling check, punctuation, AutoCorrect, dictionary lookup for the Mac. Grammarian PRO2-the World's first English grammar checker.

Proofread Bot checks your writing for grammar, style, spelling, statistic and plagiarism issues and gives recommendations to improve your writing. The tool gives you a visual text editing interface and an auto generated textual report for your convenience. The written report contains additional information, such as readability scores. Proofread Bot already has thousands of language rules, and if you have an idea for a new rule or check, please suggest it in the support forums.

SpellCheckPlus is a grammar checker that finds common spelling errors and grammatical mistakes in English.