Free USB Installer
UNetbootin allows you to install various Linux distributions (Ubuntu, Fedora, openSUSE, etc) from Windows or Linux.
LVPM allows users to upgrade their existing Wubi or Lubi installation to a standard Ubuntu system.
Bubakup, the Bootable Ubuntu Backup, is a tool that allows you to create a bootable backup image of your running system.
Lubi installs Ubuntu on Linux without a CD or partitioning.
Parted Magic Partition Manager DirectBoot is a partition manager which allows for the creation, resizing, deletion.