Grammarly apparently had my previous review deleted for stating that they are 'basically a key-logger that owns everything you write.'

So, I'll paste their actual terms of service in and let you make your own informed decision.

'By uploading or entering any User Content, you give Grammarly (and those it works with) a nonexclusive, worldwide, royalty-free and fully-paid, transferable and sublicensable, perpetual, and irrevocable license to copy, store and use your User Content (and, if you are an Authorized User, your Enterprise Subscriber’s User Content) in connection with the provision of the Software and the Services and to improve the algorithms underlying the Software and the Services.'

After logging in, the extension still didn't work, it's still asking for me to sign in, it's like it's stuck on that page.

This addon no longer works in Firefox. It worked fine for a while then just stoped, and then begged me to become a registered user. Even after registering, rebooting, delete, reboot reinstall it still didn't fix the problem. Their tech support suggested I disable my gmail signature then uninstall reboot install to fix it. Still no good.

Their Permissions are rather intrusive. Developers are in San Fancisco and the Ukraine. Having this running, assume Russia sees everything you type.

If you are concerned about security STAY AWAY!

This extension logs everything you type. This includes any on-line banking and shopping, meaning they have a record of all information you type. This includes credit card numbers, SSN's, answers to security questions and so on and so on.

Every browser comes with spell check anyway.

1 Star hoping a dev will see. Icon for Gramarly is intrusive and annoying. I cannot access Twitch Emotes with this extension active, please let us whitelist sites or something

worked great for 2 days then never again :( Pass on this one !

I already log in to my account but dictionary and other setting not shown under ads-ons even doesn't recognize my login. How can solve this problem

Says that I need to sign in, and if I try, I am signed in, but then nothing happens, and it still says I am not signed in? I tried to search their support page for solution - nothing. But many people are having the very same issue.

saying that im not logged in even though im clearly logged in

Fix your fucking extension, it hasn't worked on half a dozen computers I've tried it on across Linux, windows, and mac

Full-featured machine for Surveilance and Stealing your data. If you brush your teeth, or wash your hands, at least once in a while, keep your mouse pointer away from the button "+ Add to Firefox". +1 to the reviewer below

Keeps asking me to login.

i can't access this extension in google docs

Does not support Google docs

Não funciona. Travou e agora não sai de cima da janela de texto. Perdi o formulário inteiro graças à essa extensão mal feita!

It doesn't work in google docs like in chrome.

I am really really annoyed by the intrusive ads depicting "happy students" and other left-wing nonsense shouting at me from Every media that I use. Besides, Grammarly is a YAS (Yet Another Spellchecker) only with hype. There are plenty of other hype-free spellcheckers available for Firefox and I will choose one that doesn't annoy me rather than one that I can not relate to At All and one that doesn't bring any novel functionality to the table!!!! If I were on an uninhabited island and Grammarly was the last ever available spell checker, I'd rather go without any spellchecker than touch Grammarly with a barge-pole (even if it's a very long barge pole)!!!! I find Grammarly totally useless and unnecessary... I think I've made myself clear enough?

Firefox and Grammarly are not a good marriage. I am going back to Chrome, it is better, works with no issues. Firefox is missing features. To see the mistakes I need to click and get a new window, while in Chrome it is fluently showing me the first level of errors.