DealOz.com - Save time. Save money. Discover. Search new and used books, textbooks, and ebooks using the most trusted shopping comparison site, DealOz.com.
Numi App - Numi is a beautiful text calculator for Mac.
AbeBooks - AbeBooks has millions of new & used books, rare books and out of print books.
Soulver - Soulver is a software application that functions as a calculator that allows you type a continuous stream of information rather than having to input data into multiple cells.
Bookfinder - Find nearly any book: new, used, rare and textbooks.
Parsify Desktop - Extendable calculator for the 21st century ⚡