GoodBooks.io - Largest curated collection of 8,500+ book recommendations.
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Bookicious - Find the best new book to read with books collections for makers, founders and entrepreneurs.
TestBox - Test drive your software options before you buy
Oku - Track your book lists and get recs from your friends
AlternativeTo - AlternativeTo lets you find apps and software for Windows, Mac, Linux, iPhone, iPad, Android, Android Tablets, Web Apps, Online, Windows Tablets and more by recommending alternatives to apps you already know.