Love it! I have tried all the major password managers for Firefox, and Keeper is the most consistent and reliable. I am a retired programmer and fairly obsessed with finding the best security and password apps.

When I first setup the addon, I was having some difficulty with 2-Factor Authentication, where Keeper was requesting the 2-Factor code on every signon. Then I realized that you need to retain the cookie info for Keeper - I was clearing all cookies on exit from Firefox. So, I made the following changes in the Options and Privacy & Security section of Firefox:

For "Clear history when Firefox closes", set Cookies to "unchecked".
Under the cookie options, set "Keep until" to "I close Firefox".
Under the cookie "Exceptions", add the link "https://keepersecurity.com" as "Allow".

After the above changes, Keeper will only ask for the 2FA code on the first logon, and the Firefox cookies will still be cleared on exit from Firefox (except for the required Keeper cookies).

Hope the above helps someone, as it was driving me crazy.

I've been using the premium version of Keeper for about three years or more now and love it. It's very easy to use, can be integrated with many different browsers including Firefox, Chrome and Opera as well as Edge and set to autofill your logins so you never have to type your passwords or logins. I love it.

Всем хорошо это приложение, кроме одного — цены. 30 в год — это не так и много, но есть гораздо дешевле, и даже бесплатные приложения. Мне больше нравится ценовая политика «немного бесплатно — за деньги остальное». А когда у бабушек за пароли от почты тянут деньги — я это называю жадностью.

Its great and much needed app. Works well enough for me.

Works great.

speeds access to password protected sites and saves me having to remember them all

I love this program!

Easy to access and works on all of my devices.

Using for years, excellent service as always.

very handy

نشقشغه ناخذ

免费的到底能存多少？

This plugin keep popping out window to require me click extension icon to login. Every day, every time, every page, every click, every place it sees any input box in the page, regardless of login or not, even after I clicked
"don't show me again" checkbox. Why making this experience so terrible? Shouldn't you leave me alone when I need your help?

This Add-on slows Firefox to a grinding halt. I installed it on my work laptop (MacBook Pro High Sierra) because I have so many websites to login to (1500+ saved passwords). Its just unworkable.

Just the best.....

Simple et pratique.