I use my HTC EVO 4G for everything. To keep what I have somewhat manageable, I've made folders, have a recent-app launcher, squish my icons down with MultIcon, and favorite/star my most contacted people, but keeping things tidy—available at any time—and yet still easily accessible is a chore.
Enter CircleLauncher, an incredibly useful bookmark, app, or call launcher that's both stylish and functional . . . and that can help beat this mess into submission.
CircleLauncher takes up between one and four icon slots, depending on how you set it up, and when activated it blooms out contacts, apps, or bookmarks you've configured. Each widget is configurable on its own, meaning you can create a CircleLauncher button with friends you contact, one with work contacts, one with people to dial while blind-stinking drunk, one with apps you use on a regular basis, and so on.
The app launcher function of the widget is what I think folders should have been on Android; it's smooth, sleek and just feels right.
Each widget can be renamed (e.g., games, people I like, people to dial while drunk, websites I use regularly), there are several color options to choose from, and you can choose icons from an icon pack (separate download). You can also change transparancy, icon size, and a host of other options. Additionally you can set a playlist shortcut, according to the reviewers in the Market (this may be player-specific, as I can't seem to get this to work with mine).
It's an amazing space-saving organizational tool and thanks go to G&E reader Dave T, who pointed me toward it. The light version is free, while the pay version includes the ability to use horizontal and vertical launch lists as opposed to the circular one and possibly some other features.