NanoHttpd is a lightweight HTTP server designed for embedding in other applications. It's only one Java file, in two "flavors", one strictly Java 1.1 compatible, and one at "current" standards. It supports GET, POST, PUT, HEAD and DELETE requests, and supports file uploading with very small memory overhead. Temp file usage and the threading model are easily customized.
Pride combines bash scripts, zenity, and the Android tools to create a fast and simple POSIX alternative to Eclipse for Android development. For ease of use, it comes with a menu.xml for use with the medit editor, but it can be used from the command line or with any editor that makes exec calls, such as Emacs or Vim.
Limbo is a PC Emulator (x86) based on QEMU for Android devices. It lets you run a Desktop OS like Debian or DSL Linux on your Android device with Network and X Windows. Limbo works with Live CD ISOs and pre-installed hard disk images created with QEMU, VMWare, Bochs, or Virtual PC emulators.
Mo Da Browser aims to be a stable, small, usable browser for Android. It will be a core browser of at most half a dozen Java files for anyone to build up from and add their own value. Developers can then sell their app with its added value into the marketplace. The main goal is to rework how things are done in browsing (how to go forward and back, how to control the browser, and how to record and share where you've been).