Antivirus and anti-spyware engine - Innovative scanning engine protects against viruses, spyware, and other malicious agents.

Heuristics engine - Proactively finds malware undetectable with normal definitions and virus signatures.

Intelligent Scanner - Reduces the number of required file scans up to 80% through a white list of safe applications. Files identified as safe are not rescanned unless they change.

Multi-threaded scanning optimization - Allows the splitting of large files between cores, which accelerates the scanning process on new multi-core CPUs and makes avast! run even faster.

Code emulator - Uses dynamic translation (much faster method than traditional emulation) for both generic unpacking and within the heuristics engine.

Smart virus definition updates - Incremental updating minimizes the size of regular update files.

Fast application of updates - New format for the virus definition file means faster updates, reducing demand on CPU/memory, for uninterrupted computing.

Simple attachment blocker - Blocks attachments based on file extension

Exchange plug-in - For tight integration with the Exchange server 2003/2007/2010

Background scanning option - Scans without impeding real operations of the server.

Notification manager - Built-in and customizable, to ease your workload.