{3 useful Android apps for Developers}

Android Terminal Emulator

This application lets you access your Android’s built-in Linux command line shell. It emulates a Digital Equipment Corporation VT-100 terminal. You can use this application to run utility programs on your device.
This application lets you run Linux command line utilities on your Android phone. It is mostly useful for computer programmers. It might also be useful for people who want to explore the Linux internals of their Android phone.

ConnectBot
ConnectBot is a powerful open-source Secure Shell (SSH) client. It can manage simultaneous SSH sessions, create secure tunnels, and copy/paste between other applications.
This client allows you to connect to Secure Shell servers that typically run on UNIX-based servers.

HubDroid
Access GitHub from your Android device! Hubroid is the only full-featured GitHub client available on Android. Access repositories, gists, followers, news feed, issues, commits, and much more!