1- AVG Anti-virus Free software:-
It is one of the best and a free antivirus software. It is fully pledged which includes scanner, link scanner, arranged scanning options and automotive updates and many more. There is no need to pay to install this software. It can be downloaded for free. Its works for free on Windows 7, windows Vista and Windows XP as well as on Windows 2000 as well. It is equipped with premium features as per your specifications.
2- Avast free software:-
It is certainly deserves to be the best and number one antivirus software. It is fully functional and protects or safeguard your PC from internet threats. It supports Windows 7, Vista and XP same as like the AVG. It is on the top because of its heuristics engine which can detect all sorts of virus and malware.
3- Microsoft security essentials:-
It is defined or described as one of the best free antivirus programs presently because of its fantastic or amazing antivirus program which detects all sorts of malware. Moreover, it has quite an easy navigation menu. It also supports or work free on Windows Vista, XP and Windows 7. The biggest advantage is that it is directly from Microsoft and if arises any problem, you can directly ask the company.
4- Comondo antivirus:-
It is an excellent antivirus program because of its writing facility. It has a comprehensive defense technology and safeguard your PC from a huge number of threats. It also supports Windows 7, XP and Vista. It has quite an easy navigation menu and several other technologies have been equipped into it which makes it more effective than anything.
5- Avira AntiVir personal:-
It protects your PC from viruses, Trojans, worms and other kinds of malware. It is certainly a fully functional antimal tool and works well or effectively on Windows 7, Windows XP and Windows Vista. Its heuristics system and easy to use the navigation menu enhance its value.
6- Panda cloud activities:-
This software protects or safeguard from all kinds of malware threats like viruses, worms, tronjans, adware and more. It ensure to make your computing effective and protects your PC from malware and makes it even more than better than before. It supports Windows 2000 and Windows Vista.
7- Immunet Protect virus:-
It is certainly a unique and a cloud based antivirus software which protects your PC from bots, worms, viruses, Trojans, key-loggers and spywares, as well. It works on Windows 7, Windows Vista and Windows XP. You need to connect to the internet at all times. It has completely telephone based support, as well. It will certainly increase your PC’s overall protection.
8- Digital defender Antivirus:-
It is one of the popular and a free antivirus program. It is fully functional and antispyware program. It supports Windows Vista and XP. It got small installation size, virus definition updates and several other fully functional features. Its certainly an ideal option to opt for in terms of virus detection.