Add-ons
To try the thousands of add-ons available here, download Mozilla Firefox, a fast, free way to surf the Web!
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Choose from thousands of extra features and styles to make Firefox your own.
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Search in QueDeLibros
Complemento no oficial de búsqueda de ebooks en la web quedelibros.com
Boston Public Library Search
Kansas City Public Library Search
Seattle Public Library Search
The Book Search (aka German: DieBuchSuche)
Find books easily, compare about 100 mio. books (including ebooks) from various sources (about 100 shops are included in the search engine). New books, used books, audio books, collectibles or newspapers - find everything that is currently ion stock.
Review Critical
Search reviews on ebooks and software downloads from Review Critical.
Chicago Public Library Search
DigitalBook
OnlineBooks
ElectronicBook
PDFSearcherTo create your own collections, you must have a Mozilla Add-ons account.
