Grammarian PRO2!

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.

Hemingway App makes your writing bold and clear.The Hemingway Editor for Mac and PC highlights common errors. Use it to catch wordy sentences, adverbs, passive voice, and dull, complicated words.

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

Typely is precise. Existing tools for improving prose raise so many false alarms that their advice cannot be trusted. Instead, the writer must carefully consider whether to accept or reject each change.We aim for a tool so precise that it becomes possible to unquestioningly adopt its recommendations and still come out ahead — with stronger, tighter prose. Better to be quiet and authoritative than loud and unreliable.

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

Writefull is a light-weight app that provides feedback on your writing by checking your text against databases of correct language.

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:

Spell Catcher is a powerful, all-in-one spell checking and writing software solution—a program that’s so much more than a spelling checker, its name only hints at its capabilities. With Spell Catcher, you’ll write better and faster—in virtually any application. Use it to spell check e-mails, letters or documents, instant messages, and more! Spell Catcher can watch for errors as you type, and automatically fix common typos. Shorthand Glossaries let you define your own abbreviations for repetitive phrases—even thousands of characters long! Use the dictionary or thesaurus to look up a word you’ve just typed to check its meaning or search for a more precise alternative. »

cocoAspell is Mac OS X interface to Aspell – A more intelligent Ispell – that is being developed by Kevin Atkinson. Aspell is an Open Source spell checker designed to eventually replace Ispell. Its main feature is that it does a much better job of coming up with possible suggestions than Ispell does. In fact recent tests shows that it even does better than Microsoft Word 97's spell checker or just about any other spell checker I have seen. It also has support for checking (La)TeX and HTML files, and run time support for other non English languages. »

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

Analyze My Writing is an online text content and readability analyzer. Copy and paste a text into the homepage and gain a wealth of information about your text including word and character counts, word and sentence lengths, the readability of your text, and other analyses.

just-not-sorry - Gmail Plug-in that warns you when you write emails using words which undermine your message