🆚 Firefox Add-ons vs. Opera Add-ons
Firefox Add-ons
Opera Add-onsType
About
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.
Headquarters
Pricing
Popularity
Determined by the number of sites using each technology.
Market share
Popularity by country
Determined by the number of sites detected from each country.
Popularity by domain category
Determined by the number of sites in each category.
Top sites
Top-ranked sites that use these technologies.
Compare alternatives
Technologies with similar characteristics.
Progressive Web App
Chrome Web Store
Microsoft Store
Snapcraft
Microsoft Edge Add-ons
Mozilla company profile🗃️ About This Data
- We evaluate the popularity of technologies based on the number of websites where we detect their usage.
- Technologies without a detectable web footprint, and those we do not track, are not reflected in the calculated market share.
- Statistics were last calculated on .
- For more details, see our methodology and disclaimer.