ADW.Launcher sweetens HTC EVO with Froyo flavor
Even if you're not into the hacking scene and don't want to flash a Froyo ROM, you can still get a small taste of Froyo-flavored goodness on your HTC EVO 4G.
It doesn't have the actual speed or full functionality of Android 2.2, of course, but ADW.Launcher makes your EVO look like it's running the latest version of the mobile operating system (compare what you see at right to a screenshot of the real 2.2 home screen).
The launcher/home screen replacement app features the Froyo dock (the phone and browser icons can be switched out with any other app, which I don't think is possible in stock Froyo), 5 home screens (this is a downgrade from the 7 screens available with HTC Sense), and support for home screen rotation. It can also be customized with the horizontal app drawer found on Samsung's Galaxy S phones and has a bunch of settings to tweak the UI, hide the status bar, apply themes, adjust the app grid, and remove app labels (among other things).
ADW.Launcher is available for free download in Android Market, where you can also find themes.