Best Bitmap Effects Support Mozilla Addons Alternatives

Switch All YouTube™ Videos to Flash® Player

A companion add-on that adds new features from the Firefox mockups to Strata40.

Glass your Firefox gui with GlassMyFox (only possible on Windows 7 and Vista when AeroGlass is enabled). See instructions inside add-on description how to enable Glass on Windows 8.

Apply various effects to Firefox icons.
Grayscale, negative, pink glasses and more...
Also we have cookie forms.

Capture webpage freely, mark up with shape, text and mind mapping information, one-click upload to share. Support PNG and shortcuts. Useful in organizing ideas, planning and tracking projects, solving the problem of image-based information exchange.

CsFire autonomously protects you against dangerous or malicious cross-domain requests, such as Cross-Site Request Forgery (CSRF). CSRF is very prevalent and dangerous, as stated by the OWASP top 10, as well as the CWE/SANS top 25 programming errors.

Edit any image on the Web - Turn Firefox into an image editor using Picture2Life, you can choose from hundreds of cool effects, create collages or animations!

i2Symbol is your ultimate source of free Symbols . Smileys . Emoticons . Emojis . Stickers . Postcards . Photo Effects . Memes . Text Art

An integrated sidebar-dictionary for Japanese and Chinese including kanji dictionary.

Add effects when current tab is changed...

Extension adding support for U2F standard to your Firefox

Bring back tabs on bottom feature !

telnet client extension specifically designed for BBS browsing.
It support mouse browsing and FireGestures script.

BookMarkStar on the left side

pkrss is one rss tools, it embed http://www.pk17s.cn.
contact with google rss feed,join in multi lanauage support,if default panel has no feed,your can search some feed by keyword in topbar.

A simple Rich Text Editor that support Maths and Graphics editing

Make Firefox look and behave like Vim

Play all videos on youtube without flash in your preferred size using only HTML5.