Bacula is a highly flexible, open source, cross platform Free Backup Manager. The Free Backup Software is basically an UNIX based set of programs, aimed at system administrators to manage network backup & data recovery, and verification of computer data across a network.

 DocSearcher is a  Powerful Computer Search Software that uses the Open Source Lucene and POI Apache APIs as well as the Open Source PDF Box API, to provide searching capabilities for HTML pages, MS Word, MS Excel, RTF, Open Office (and Star Office) and also PDF files on the computer.

   Windows Pager is a portable, Free Windows Virtual Desktop Manager that adds four virtual workspaces to the existing desktop. It integrates the new workspaces as icons in the taskbar and allows for managing the open windows through a right click context menu.

The Free Multi Platform Archive Software PeaZip is an open source file and archive manager that is cross platform, and is available as a portable or installable software for both 32 and 64 bit versions of the Windows operating system.

The Open Source Windows Explorer Emerge Desktop is a replacement of the desktop environment provided by Windows Explorer by default. The software is a freeware and can definitely help you make your desktop look stylish and clean!