The Top 10 Free WordPress Theme Websites

1. WordPress.Org’s Free Themes Directory — The behemoth of themes, at the time this post was written, WordPress.Org had over 1,300 free themes.  That’s a whole lot to choose from.
2. FreeWordpressThemes.com — This is a great resource for free themes with hundreds to choose from.  Go to the “top rated” tab for quick browsing.
3. WpRex.com — These themes are well-categorized by their most important attributes.  You can easily isolate just the themes that have one column, two columns, four columns, etc.  You can also filter the themes by other design attributes like rounded corners.
4. WordPressThemesBase.com — This site does two things particularly well: It makes it possible to find the most downloaded themes, which is a great way to cut through the huge array of free themes available online.  It also allows you to sort by categories.  Whereas other sites do a great job of allowing you to sort by themes’ design attributes like rounded corners, this website allows you to search for thematic elements like “restaurant” or “computer” imagery.
5. FreeWpBlogThemes.com — This free WordPress themes website has one of the longest lists of categories of any of the sites on this list.  It even features some really unique categories like “125×125 Ads Ready.”
6. SmashingMagazine.com — This isn’t a website devoted exclusively to free WordPress themes.  Instead, it’s a wonderful blog post by SmashingMagazine’s Paul Andrew.  It lists 100 free high quality WordPress themes.
7. Themes2Wp.com — It’s not the prettiest site ever, but with +800,000 WordPress theme downloads, it is functional.  They have a lot to choose from and even provide a great features summary for each theme in their database.
8. Themes.Rock-Kitty.net — I really like Rock Kitty because it’s easy to navigate through their massive database.  You can sort by most popular, by design attributes including color and by a number of other ways.
9. WpExplorer.com — WpExplorer.com has an extensive page of free WordPress themes.  What’s interesting about this site is that it lists a number of theme categories that aren’t directly related to blogging.  For instance, it has a category for eCommerce themes.  While many regard WordPress as blogging software, it is an extremely flexible content management system (CMS) and this free WordPress themes page allows you to explore some of its non-blogging applications.
10. FreeWpThemes.net — This site (at the time this post was written) contained +300 free WordPress themes.  What’s interesting about this site is not only the sizable quantity of free themes to choose from, but the fact that many of them were previously free CSS templates that the owner of the site converted into WordPress themes.  The owner is offering them up for free.  According to the creator of FreeWpThemes.net, all of them contain only royalty-free stock images.