It was great until Firefox 57 and version 5. Now I can't install any new scripts whatsoever and every single one of mine is broken. I've spent the past several hours trying to get them work and they don't anymore. I've moved to TamperMonkey now which works like a charm.

Greasemonkey 4 is a piece of crap that I would HIGHLY recommend avoiding.

Non funziona più!!!

good

Greasemokey was great... until they seem to have decided that "Less is More" when it comes to their program. The new updates roll in and suddenly I can't do half of what I used to, and half of my scripts are gone and can't return. I can't even manually write scripts into it anymore, they have to be put on their download site and pulled from there. Yeah, no thanks, Mozilla is already spying on us enough already, I don't care to invite more.

It was a good run, but it's over. Sorry to see you fall, Greasemonkey.

Installation following the information provided was not successful.

Everything was good until the authors decided to go with backwards incompatible changes for v4. There are lots of user scripts which are not going to be updated in a timely manner (or even ever). Personally I can not support a decision to be progressive at the expense of the end users. And considering the presence of mature and steady alternatives to Greasemonkey I don't see any reason to stay here.

Все было в порядке до тех пор, пока разработчики не приняли решение сделать версию 4 обратно несовместивой. Существует множество пользовательских скриптов, которые не будут обновлены своевременно (или вообще когда либо). Лично я не поддерживаю решение быть прогрессивными за счет пользователей, и, с учетом существования надежных альтернатив, не вижу причин оставаться на Greasemonkey.

베리굿

good

Je l'apprécie mais, il manque l'extension AntiGameorigin v6 afin d'avoir les statistiques et les modules sur OGame !

active but not working in firefox quantum

Some scripts stopped working and I do not really understand if I am actually making use of it. Thinking of unistalling it.

This is madnes!

It was good but in new firefox i cant add some scripts

Besides questionable decision to go with incompatible changes, was it really necessary to make WebExtension version FF 57+ only??
With current FF mess the only reasonable option is to keep FF 56 while slowly upgrading extensions or searching for replacements.