I've found three web site that are great for finding new authors and lists of their books.

The first is http://www.fantasticfiction.co.uk.
This site is based in UK, but has books from America as well. They have have many categories...science fiction, fantasy, horror, mystery, thriller, romance, western, and mainstream (not sure what that is). You can search by author name or book or by category. When I find a new author, I go there first to find out about them and find lists of their books.

The second for cozy mystery lovers.
http://www.cozy-mystery.com/
They have an author index, and lists by theme including states, and suthor interviews. A fun place to browse.

The last is for all mystery lovers.
http://www.stopyourekillingme.com/
This site has author and character indexes--when was the last time you could remember the character name but not the author--reviews, awards, location, genre, and diversity indexes. YOu can sign up for a twice monthly newsletter so you can find out about new authors and characters, book give-aways and more.

I hope you'll find these websites as helpful as I have. Hey, just what we need, more books to wishlist!

For these reasons, I now use http://www.wikipedia.org to make checklists for my favorite authors and series. The information there is much more accurate (as it can be supervised and corrected, if necessary, by lots of people), and also Wikipedia is much faster, ad-free and more eye-friendly.

A few other great sites:

http://www.gatepages.net/ - complete lists of Stargate novels, shorts stories, comics and other publications

http://www.well.com/~sjroby/lcars/ - The Complete Starfleet Library - all Star Trek books, comics, etc. ever published. Fast and easy search feature.

http://www.well.com/~sjroby/lostbooks.html/ - a complete list of unpublished Star Trek books. Very interesting and informative

Thanks for the other links!