Many times, people are using free tools in order to save money. While some free tools are very good for what have been designed, some of them lack some features that can make a huge difference in productivity, in security or in data storage/recovery.

For instance, zip is a very popular archive, so people use a free program like 7-zip to decompress a zip file. While it's nothing wrong with that, the same people also use it to create zip archives in order to backup information from their...