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Shareware is software that is readily available to download online for a free trial evaluation. At the end of the trial period the user is bound by the electronic user license agreement (EULA) to either uninstall the software, or pay for its continued use. Some shareware programs have built-in mechanisms to protect the author's copyright after the trial period has expired. Shareware downloads are different from freeware downloads. Freeware does not require payment. There are many antivirus shareware softwares which are available in the Internet for trial download. The antivirus softwares help in protecting the PC from malicious attacks. Some of the antivirus softwares also help in repairing any problems of the PC.
Some of the popular downloadable shareware of antivirus which can keep the PC running without any problem are listed below:
• avast! Professional Edition
• VIPRE Antivirus + Antispyware
• Norton Antivirus
• Kaspersky Anti-Virus
• Spyware Doctor with Antivirus
• BitDefender Total Security
• Nod 32