calibre is the only best e-book management software that AppNee has known combining e-book manager, reader, editor and converter in one. Free, open source and cross-platform.
YourStamp is a old but cool app used to use your own photographs and graphics to create beautiful and ready to print 'stamp' images. That's equivalent to converting ordinary images to stamp style with personalized information, such as your own slogan, motto, URL, Phone Numbers, etc.
For junior or senior computer users, operation system reinstallation is often a necessary but trouble thing (such as: no OS installation disk; laptop without CD/DVD ROM; too long installation time ...). But from now on, you do not have to think of installing your computer OS using the outdated CD/DVD, just remember one tool - Universal USB Installer!
PDFCreator is a free, open-source PDF printing, output application (virtual printer), any program who supports the Windows printing function can use it to create PDF and many other formats.