Tampermonkey

Tampermonkey is a free browser extension and the most popular userscript manager. It's available for Chrome, Microsoft Edge, Safari, Opera Next, Dolphin Browser and Firefox.

Tampermonkey will give you much convenience in managing your userscripts. It provides features like easy script installation, automatic update checks, a simple overview what scripts are running at a tab and a built-in editor.
You can also import and export your scripts and settings via some popular cloud storage services (Google Drive, Dropbox, OneDrive, WebDAV).

For a full overview please take a look at the FAQ or just install TM. ;)

Thanks for using Tampermonkey. :)

Permissions

Screenshots

Feedback from users

Reviews and ratings

gryzor says:

Rating: 5

So useful, so practical!

March 16, 2014 - Version 3.6.3737
bkstorm says:

Rating: 5

awsome :D I like it.

Jan. 17, 2014 - Version 3.6.3737
zzzguru777 says:

Rating: 5

супер.раньше приходилось интегрировать хромоское расширение теперь есть свое.работает без нареканий

Jan. 15, 2014 - Version 3.6.3737
nitemagic says:

Rating: 5

Opera Energized!!!between this and adblock, they keep my browser very happy! thanks.

Jan. 8, 2014 - Version 3.6.3737
m1losh says:

Rating: 5

I cant imagine browser without this add-on.

Dec. 14, 2013 - Version 3.5.3630.14
petr1650 says:

Rating: 5

skvělý, perfektní je to třeba na hru The West

Oct. 12, 2013 - Version 3.5.3630.14
citycomet says:

Rating: 5

Tampermonkey is a SUPER add-on !!!!

Oct. 12, 2013 - Version 3.5.3630.14
step-2 says:

Rating: 5

an essential extension

Oct. 11, 2013 - Version 3.5.3630.14
satano111 says:

Rating: 5

programm ist easy!

Sept. 14, 2013 - Version 3.4.3494
david-lowe says:

Rating: 5

Seems to be the better of the 2 Userscript tools for Opera. Tried the other one and it didn't work for my existing script that was made for Greasemonkey. My script worked fine in Tampermonkey.

Good job folks!

Sept. 14, 2013 - Version 3.4.3494