smali/baksmali is an assembler/disassembler for the dex format used by dalvik, Android's Java VM implementation. The syntax is loosely based on Jasmin's/dedexer's syntax, and supports the full functionality of the dex format (annotations, debug info, line info, etc.)
ConnectBot is a Secure Shell (SSH) client for the Android platform. Its ultimate goal is to create a secure connection through which you can use a shell on a remote machine and transfer files back and forth to your phone
Hecl The Hecl Programming Language is a high-level, open source scripting language implemented in Java. It is intended to be small, extensible, extremely flexible, and easy to learn and use. Infact, it's small enough that it runs on J2ME-enabled cell phones!
Why Hecl? Hecl is intended as a complement to the Java programming language, not a replacement
AppInventor Toggle - This is a simple utility application that allows one click enabling of the two features needed to work with Google's latest AppInventor. With one button, the application disables orientation sensing and enables "stay awake" on USB/AC power with Toast notifications