Bluetile is a tiling window manager designed to integrate with the GNOME desktop environment. It provides both a traditional, stacking layout mode as well as tiling layouts where windows are arranged to use the entire screen without overlapping. Bluetile tries to make the tiling paradigm easily accessible to users coming from traditional window managers by drawing on known conventions and providing both mouse and keyboard access for all features.
Debian From Scratch is really two related components in one. First, it's a live bootable CD image that is designed to provide a full-featured kernel and rescue environment. It includes filesystem tools, editors, C compilers, Python, Perl, and everything you need to manually install Debian on a new machine. On ix86 machines, Grub is used to boot directly from the CD. There is also a program that is used to create the DFS CD images. It is highly configurable and can be used to create other custom bootable CD or DVD images. You can include whatever kernel or packages you want.
Streams is an I/O library designed to eventually replace the current I/O facilities based on using Handles. The main advantage is its strong modular design using typeclasses. It consists of small independent modules, each implementing one type of stream (file, memory buffer, pipe, etc.) or one part of common stream functionality (buffering, char encoding, locking, etc.). 3rd-party librarie can easily add new stream types and new common functionality. Other benefits of the new library include support for streams functioning in any monad, Hugs and GHC compatibility, high speed, and an easy migration path from the existing I/O library. It is heavily based on the HVIO module written by John Goerzen.