🆚 Firefox Add-ons vs. Opera Add-ons

Firefox Add-ons, also known as AMO, is Mozilla's official marketplace for discovering, installing, and managing extensions and themes for the Firefox browser.

It hosts around 600,000 add-ons, features a Recommended Extensions program with curated and regularly reviewed entries, supports extensions on desktop and Firefox for Android, and includes tools that block tracking, translate content, check spelling and grammar, and customize the browser interface.

Opera Add-ons is an official site for discovering and installing add-ons and themes designed for the Opera browser.

It provides a categorized catalog spanning over a dozen sections such as productivity, security, and developer tools, includes extensions for downloading content, translation, and sidebar integrations, and supports user ratings, reviews, and curated recommendations.

Popularity

Determined by the number of sites using each technology.

• ⭐ 7th most popular in the United States in the Apps category.
• ⭐ 7th most popular in Germany in the Apps category.
• ⭐ 7th most popular in France in the Apps category.

• ⭐ 10th most popular in the United States in the Apps category.

Top sites

Top-ranked sites that use these technologies.

Compare alternatives

Technologies with similar characteristics.

• Firefox Add-ons vs. Progressive Web App
• Firefox Add-ons vs. Chrome Web Store
• Firefox Add-ons vs. Microsoft Store
• Firefox Add-ons vs. Microsoft Edge Add-ons
• Firefox Add-ons vs. Snapcraft

• Opera Add-ons vs. Progressive Web App
• Opera Add-ons vs. Chrome Web Store
• Opera Add-ons vs. Microsoft Store
• Opera Add-ons vs. Microsoft Edge Add-ons
• Opera Add-ons vs. Snapcraft

• Firefox technology profile
• Mozilla company profile

• Opera technology profile
• Microsoft company profile