Page 0 of 15 for most used Firefox add-on in the Firefox category in Firefox Browser Add-ons

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Add-ons (also known as extensions) are small programs that run inside web browsers like Mozilla Firefox. They add extra features to the browser without having to download anything new. You can use extensions to make browsing faster, easier, and safer. Some extensions even let you do things like translate text on websites, search the web, and play games.

There are over 28,000 Firefox-addons and 480,000 themes, making it hard to find the best ones. so we have created a way to sort through all of them. Use the dropdown above to set different filters. Add-ons are sorted by number of active users.

To set even more advanced filters, and sort the Firefox add-ons differently, please visit our Advanced search tool. Note that Advanced search tool is only available to premium members.

#1, Deep Space (YouTube Dark Theme)

Skyflake

Deep Space theme for Firefox. Theme made using dark theme color from YouTube.

4.83 (35)

4,084

#2, Color Fox Browser Top

Jutte Angarde

Color Fox Browser Top. Video HD Resolution up to 3440pixels. Your comments can improve all of my themes.

4.00 (1)

64

#3, Activist – Balanced

Mozilla Firefox

You leave the world a better place than you found it and lead others to believe.

4.81 (84)

769,382

#4, Visionary – Balanced

Mozilla Firefox

You question the status quo and move others to imagine a better future.

4.57 (44)

498,817

#5, Dreamer – Balanced

Mozilla Firefox

You believe that fortune favors the bold and inspire others to be brave.

4.82 (39)

441,802

#6, Expressionist – Balanced

Mozilla Firefox

You see the world differently and your creations stir the emotions of others.

4.67 (12)

264,962

#7, Innovator – Balanced

Mozilla Firefox

You see opportunities everywhere and make an impact on the lives of everyone around you.

4.58 (12)

226,464

#8, Playmaker – Balanced

Mozilla Firefox

You create opportunities to win and help everyone around you elevate their game.

3.33 (6)

222,690

#9, Lush – Soft

Mozilla Firefox

Life is better in color. Make your browsing a little more joyful and vibrant.

4.45 (22)

211,265

#10, Dreamer – Bold

Mozilla Firefox

You believe that fortune favors the bold and inspire others to be brave.

4.82 (28)

165,194

#11, Activist – Bold

Mozilla Firefox

You leave the world a better place than you found it and lead others to believe.

4.59 (32)

158,995

#12, Graffiti – Soft

Mozilla Firefox

Life is better in color. Make your browsing a little more joyful and vibrant.

4.81 (16)

136,658

#13, Foto – Soft

Mozilla Firefox

Life is better in color. Make your browsing a little more joyful and vibrant.

4.79 (19)

135,263

#14, Elemental – Soft

Mozilla Firefox

Life is better in color. Make your browsing a little more joyful and vibrant.

4.00 (19)

127,009

#15, Cheers – Soft

Mozilla Firefox

Life is better in color. Make your browsing a little more joyful and vibrant.

4.50 (6)

109,514

#16, Visionary – Bold

Mozilla Firefox

You question the status quo and move others to imagine a better future.

4.82 (22)

104,846

#17, Abstract – Soft

Mozilla Firefox

Life is better in color. Make your browsing a little more joyful and vibrant.

4.33 (6)

93,826

#18, Playmaker – Bold

Mozilla Firefox

You create opportunities to win and help everyone around you elevate their game.

4.44 (9)

83,780

#19, Innovator – Bold

Mozilla Firefox

You see opportunities everywhere and make an impact on the lives of everyone around you.

4.63 (8)

61,266

#20, Lush – Bold

Mozilla Firefox

Life is better in color. Make your browsing a little more joyful and vibrant.

4.50 (10)

55,072

#21, Graffiti – Bold

Mozilla Firefox

Life is better in color. Make your browsing a little more joyful and vibrant.

4.78 (9)

52,805

#22, Cheers – Bold

Mozilla Firefox

Life is better in color. Make your browsing a little more joyful and vibrant.

4.89 (35)

52,333

#23, Activist – Soft

Mozilla Firefox

You leave the world a better place than you found it and lead others to believe.

4.42 (12)

41,377

#24, Lush – Balanced

Mozilla Firefox

Life is better in color. Make your browsing a little more joyful and vibrant.

4.57 (7)

39,461

#25, Purple Night Theme

breuxi

Purple Night Firefox Theme with Twinkling Stars, based on Chu's Purple Twinkle, but with New Tab Background, Sidebar Style and new Colors. Chu's Version: https://addons.mozilla.org/de/firefox/addon/purple-twinkle/

4.82 (301)

38,964