Microsoft Office and OpenOffice
OpenOffice is a full version of the Microsoft Office application package, such as a word processor, spreadsheet, and presentation. Besides, it can also read files created from MS Word, Excel and PowerPoint.
Edit digital photos
Adobe Photoshop and GIMP
Photographers and most users generally consider Photoshop the most valuable application whenever photo editing is needed. But there is a software called GIMP with similar color palettes, layers and brushes in Photoshop and no money to buy.
Kill the virus
Norton Antivirus and AVG
Like Symantec's Norton program, the free AVG Anti-Virus version has the ability to automatically update data, isolate dangerous software and protect files in real time. However, AVG does not have a fast response team when it encounters a problem like the center of Symantec Security Response.
Watch movie
PowerDVD and ALShow
Windows Media Player basically doesn't support DVD and many other file formats, so users need to buy a DVD player, such as PowerDVD, and download some codecs like DivX and AVI. ALShow is a highly rated program that supports most popular codecs today.
Anti-spyware
Spy Sweeper and Spybot
Spyware, with the task of sniffing users' computers, is a significant concern recently. Spybot has the ability to "find and kill" many spyware that other products miss. It is considered to be the best product that people should pay for, but it is completely free.