Avast! Antivirus is an antivirus program developed by AVAST Software a.s. a company based in Prague, Czech Republic. The biggest change in Avast 5, though, is the interface. Gone is the music player default look, which was skinnable but confusing, and in its place is a sleek UI that new users should find far more manageable. It’s also Aero-friendly, with Explorer-style navigation buttons in case you can’t remember where you tweaked a particular setting. The detection capabilities are good but the removal and quarantine capabilities are a bit limited. One main reason for its tenth prize is the free version which we like a lot; as compared to other free versions which have very limited capabilities. Manual updates allow specific updates to be installed as well.

Features:
- Stops attacks from hijacked websites
- Lets you safely browse suspicious websites or run unknown applications
- Allows safe and uninterrupted gaming
• Web Shield
• Automatic updates
• PUSH updates
• Virus Chest
• System integration
• Command-line scanner
• Strong self-protection
• Simple User Interface
• Script Blocker (Professional Edition only)
• P2P and IM Shields
• Network Shield
• Enhanced User Interface
• Resident protection
• Integrated Virus Cleaner
• Support for 64-bit Windows / Vista
• Internationalization