Developer: Stephen (Stericson)
Requires Android: 1.6 and up
OverviewBusyBox integrates small versions of several common UNIX resources into one particular small executable. It offers replacements for the majority of of the utilities you usually find in GNU fileutils, shellutils, etc. The utilities in BusyBox generally have fewer preference than their full-featured GNU cousins; however, the options that are integrated offer the expected functionality and behave very much like their GNU counterparts. BusyBox provides a fairly complete environment for any small or embedded system.
BusyBox has been written with size-optimization and limited resources in mind. It is also extremely modular so you can easily include or exclude commands (or features) at compile time. This makes it easy to customize your embedded systems. To create a working system, just add some device nodes in /dev, a few configuration files in /etc, and a Linux kernel.
Pro version contains no ads or nag screens, Backup feature (for safer installs), uninstall feature, Advance Smart install feature, the ability to hand pick the applets you want, safety check for missing applets on start, and better overall support. The pro version will receive more frequent updates than the free version will.
BusyBox is a software application that provides many standard Unix tools, much like the larger (but more capable) GNU Core Utilities. BusyBox is designed to be a small executable for use with the Linux kernel, which makes it ideal for use with embedded devices. It has been self-dubbed "The Swiss Army Knife of Embedded Linux".
Leave this installed if you always want to get the latest version of busybox!