Simos BEST


7 Add-ons in this Collection

Tab Mix Plus by onemen, Gary Reyes

Rated 4 out of 5 stars 2,620 reviews

788,993 users

Tab Mix Plus enhances Firefox's tab browsing capabilities. It includes such features as duplicating tabs, controlling tab focus, tab clicking options, undo closed tabs and windows, plus much more. It also includes a full-featured session manager.

Xmarks Sync by Xmarks Inc.

Rated 4 out of 5 stars 2,581 reviews

302,637 users

Xmarks is the #1 bookmarking and open tab add-on. Keep your bookmarks, and open tabs backed up and synchronized across computers and browsers. Mobile phones with Premium access. Utilize LastPass to sync passwords!

ColorZilla by Alex Sirota

Rated 5 out of 5 stars 312 reviews

248,272 users

Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...

English - Greek Spelling dictionary by Kostas Papadimas (pkst)

Rated 4 out of 5 stars 67 reviews

8,462 users

English-Greek spell-checking dictionary for Firefox, Mozilla thunderbird and Seamonkey mail for easier spell checking in bilingual text.If you need better spelling results try the respective stand-alone...

Download Statusbar by C.J.

Download Now


Rated 4 out of 5 stars 1,460 reviews

280,059 users

View and manage downloads from a tidy statusbar - without the download window getting in the way of your web browsing.

Thanks Tekzilla for your awesome review! Click here to see their video:

Find In Numbers by Ehsan Akhgari

Rated 4 out of 5 stars 36 reviews

242 users

Find out how many phrases match your search

image fetcher by substantiel

Rated 4 out of 5 stars 58 reviews

274 users

when overing an image with mouse, adds a "save" button in the corner of that image. The aim of this extension is to make it more easy to download images: you don't have to right-click each time you want to download an image from a web page.

Only com...

What are Collections?

Collections are groups of related add-ons that anyone can create and share.

Explore Collections