1. doPDF (PDF Converter)
Every Schools / Colleges will at some point in day to day activities need to convert word, excel, power point documents to pdf. The doPDF is a simple and easy to use tool which helps you convert any of your documents to pdf by just printing to it from the file print menu of any windows application.
This simple tool gets installed as a virtual printer on your computer system. You can print any documents to this printer and save it as a pdf file.
You can watch this video to understand how simple it is at
2. Firefox (Faster and Reliable Internet Browser)
3. VLC Media Player (Video Player)
The player can also play Youtube videos, convert video files, play subtitles, etc.
4. Avira Antivir Personal Edition (Antivirus Free)
Avira AntiVir Personal Edition is high quality free antivirus. AntiVir is still a top notch antivirus scanner with outstanding detection rates of malware, higher than almost every other antivirus according to tests. AntiVir is still a good choice for a free antivirus scanner, particularly for high risk users.
It can defect any viruses and it provides automatic virus definition updates.