ASTRO is the best file manager out there. There is no limit to what you can do with it. You can view and edit anything on your SD card as well as in the Android system. ASTRO also comes with a Process Manager that will allow to shutdown pesky apps that go haywire or just to free up some memory from time to time. This also allows for installations of .apk files for ease of install. This is a must have app for all hardcore Android users and enthusiasts!