DiskAnalyzer Professional was available as a giveaway on January 8, 2007!
DiskAnalyzer Professional is a disk space analysis and cleaning software. It helps you search, monitor and clean oldest files, big size files, duplicate files, zero size files, graphics files, video files, compressed files, temporary and junk files from PC.
DiskSweeper FREE is a disk cleaning program which finds and removes unnecessary garbage files from your disk. It cleans temporary files, backup files, installation leftover files and many other garbage files. It also cleans internet cache files, internet cookies, zero size files, recycle bin, windows temporary files.