Jefferson County Library has no affiliation with the sites listed below. Any issues / concerns with the services offered by these sites must be pursued with the operators of the sites. Inclusion of a link on the JCL website does not constitute or imply an endorsement of that site.

Elf - keeping tabs on your library material
http://www.libraryelf.com/

Track your library books
Let Elf help you manage your library loans and holds
Avoid overdues with email alerts
Check multiple library cards
Track books, DVDs, CDs, videos, etc.
Some fees may apply

Who uses Elf?
Anyone who wants to reduce overdues
Families with children and lots of books
Individuals with several library cards
Anyone who requests a lot of holds

What's delivered?
Email and/or RSS alerts before items are due
Email and/or RSS alerts on overdues and holds
Consolidated list of yours or your family's library loans and holds
Cellphone text message alerts for holds (US and Canada)
Real-time checking by browser

LibraryThing
http://www.librarything.com/

What is LibraryThing?
LibraryThing is an online service to help people catalog their books easily. You can access your catalog from anywhere — even on your mobile phone. Because everyone catalogs together, LibraryThing also connects people with the same books, comes up with suggestions for what to read next, and so forth.

What software does it require?
None. If you can read this, you can use LibraryThing.

Some fees may apply

Shelfari
http://www.shelfari.com/

Discover New Books
Shelfari makes it easy to see what your friends are reading, what others with similar tastes have enjoyed, and even get and give book recommendations.

Talk It Up
With Shelfari you can easily connect with new and old friends to talk about the books you are passionate about. Join a group devoted to your favorite author or bring your book club online.

Show Off Your Shelf
Shelfari empowers you to show off the books you are passionate about. Build your shelf in Shelfari and then embed your shelf in your blog, website, or social networking site of choice.

WorldCat
http://www.worldcat.org/

Create a free account and you are on your way to creating list of books you've read, books you own and more.  Lists can be marked as private or public.  The lists can also be exported into Excel.  The site also allows you to maintain source lists of resources used for research projects and will export them in the proper citation format.