Literal - Track your reading and discover your next favourite book
Wikiquote - A free quote database built collaboratively using Wiki software, a sister project to Wikipedia.
Readup - Track and improve your online reading habits.
Quotefancy - Quotefancy is on a mission of turning inspiring quotes into beautiful wallpapers.
Bookling - Track your reading habits and set goals
Brainyquote - Database of quotations by topic or author.