Best Replaces Mozilla Addons Alternatives

A browser extension that replaces pictures of Tom Cruise with kittens.

Replaces moving forward with in the future

Replaces 'GamerGate' with other G words. Also replaces 'GamerGater' with 'Alligator'.

A browser extension that replaces photos of Tony Abbott with pictures of cute kittens.

Ad-Hoc replaces blacklisted page elements (advertisements) with user-determined content.

Automatically replaces links to WebM files with embedded videos

Improves the Twitter Web UI.

This extention replaces emoji to the regular text smileys on private messages and dialogs pages of the vk.com social network.

Replaces 'bitcoin' with 'magic beans'.

Replaces plaintext references to psukim (Biblical verses) to the mechon mamre link (which has the pasuk and translation). ...

Replaces random selected keywords either for a German or an English text with list of choices.
This is meant to improve your German or English grammatical knowledge.
The language of the Web page is detected automatically.

Replaces short urls with the originals so you can see where links actually link to.

Get rid of legacy Flash based embedded YouTube videos and replace them with YouTube's HTML5 player. Works even if you have Flash on.

Support for replacing the player on YouTube site is in development.

Merry Christmas! Virtual Miracle replaces intrusive web ads with an image of Jesus. Includes AdBlockPlus 2.0.1.

Automatically replaces ‘!?’ and ‘?!’ with an interrobang.

Read paid content on www.sme.sk for free

Inspired by tannr.com's Herp Derp, NietzscheDerp replaces YouTube comments with Nietzsche quotes.

Replaces javascript links with normal links on ynet.co.il and enables embedded video clips in articles.