Next in the Series
This site will let you search for the next book in a series by title, subject, or author to find which book is next.
Book Seer
If you know the title and author of a book, you can search for other books of similar interest.
What Should I Read Next? Type in a title, click on the title, then it comes up with a list of related books. The list of books that come up is very helpful in finding your next read. Be aware that clicking on the Info/Buy button takes you the book title in Amazon.
Author Cloud
Type in an author’s name, and this website will create a cloud of other authors who write books similar to this author. Authors listed further from the center as less like the author whose name you typed.