Windows Boot Genius is a nice Windows boot CD/USB maker. It allows you to create a boot CD/USB to repair all Windows boot issues. Such as black/blue screen of death, system crash, system freezing, locked Windows system, etc.
CCBoot, from www.ccboot.com, is thin client software with pxe boot tech and Internet cafe software with diskless system, also works for schools and offices, which helps restore a clean system after each reboot and update all PC's with a single click.
Purge allows you to reclaim drive space quickly, by getting rid of space-wasting "garbage". Purge can remove *.bak,*.tmp files and zero-byte files. It can delete defective links, empty the tmp. directory and erase old browser-cache files.