Book Search Engines

• Boocu  - Searches for e-books and other digital products in PDF, DOC, XLS, PPT, and RTF formats.
• BookFinder Australia  - Searches for out of print, rare, antiquarian, pre-owned, used, first edition, and cheap books online.
• Ebook Search Engine  - Online tool for finding free electronic books that focuses on smaller, less popular but useful e-book sources.
• eReader IQ  - Amazon book and ebook search tool that also provides alerts for recent price drops and presents free Kindle books.
• Free Book Search.net  - Book search engine finds books by title or author. Also features advanced search options.
• Google Books  - Google-powered tool for finding full-text books online. With a book search blog and information for publishers.
• Just Free Books  - Helps find free books, public domain texts, open books, audio books, and ad-supported books in over 700 websites.
• SearcheBooks.com  - Search engine focusing on electronic books shared or made available online.