Open Office Is the leading open-source office software suite for word processing, spreadsheets, presentations, graphics, databases and more, this is a great free alternative to Microsoft word. Audacity A free, easy-to-use audio editor and recorder for windows, Mac OS X, GNU/Linux and other operating systems. Your son will use this in his ICT Lessons. Microsoft Security Essentials Use Microsoft Security Essentials to guard against viruses, spyware, and other evil software. It provides real-time protection for your home or small business PCs. Microsoft Security Essentials is free* and we designed it to be simple to install and easy to use. It runs quietly and efficiently in the background so you don't have to worry about interruptions or making updates.