Welcome to Firefox for Android Add-ons.
Add extra features and styles to make Firefox for Android your own.
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SEMRush.com (us)
SEMRush.com US database search.
Enter domain name, keyword or URL
Smart Define Search
Add Smart Define to Firefox's search bar. Get a quick access to smartdefine.org dictionary and thesaurus when you need to find the best definitions and word meanings.
To create your own collections, you must have a Mozilla Add-ons account.