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ClamAV

ClamAV

Open-source antivirus engine for detecting malware across platforms

Our Verdict

Best for

Sysadmins needing free, cross‑platform malware scanning with CLI integration

Skip if

Non‑technical users requiring a full graphical antivirus solution

What is ClamAV?

ClamAV is a free, open-source antivirus solution designed for mail gateways, file servers, and endpoint protection. It provides on-demand scanning, real-time updates, and integration with popular web and mail services. Its lightweight architecture makes it suitable for system administrators and security professionals who need a self‑hosted, customizable scanner across Windows, macOS, Linux, and web environments.

SpecificationsAI-estimated

deploymentSelf-hosted
open source✅ Yes
github stars7,014
api available✅ Yes
support optionsEmail, Documentation
key integrationsApache, Nginx, Postfix
primary languageC

Key Features of ClamAV

ClamAV can scan files, archives, and emails for over 5,000 known malware signatures using a regularly updated database.
It offers a flexible command‑line interface that can be scripted for automated scans and scheduled tasks.
The engine integrates directly with Apache, Nginx, and Postfix to provide on‑the‑fly scanning of web traffic and inbound mail.
Real‑time signature updates are delivered via daily database releases, ensuring protection against emerging threats.
ClamAV includes a RESTful API that allows third‑party applications to submit files for scanning and retrieve results programmatically.
It supports multi‑threaded scanning to improve performance on multi‑core servers.
The software can be deployed in containerized environments, making it easy to scale across cloud infrastructures.
Detailed logging and reporting features help administrators audit scan activity and investigate detections.

Use Cases for ClamAV

1

Mail Server Protection

Scan inbound and outbound email for viruses and malware before delivery.

2

Web Application Scanning

Integrate with Apache or Nginx to inspect uploaded files for threats.

3

Endpoint File Scanning

Run on Windows, macOS, or Linux desktops to detect malicious files on demand.

4

Automated CI/CD Security

Use the API to scan build artifacts during continuous integration pipelines.

Pros & Cons of ClamAV

Pros

  • Completely free and open‑source
  • Runs on all major operating systems
  • Easy integration with common web and mail servers
  • Highly configurable via command line and API

Cons

  • Command‑line focus can be intimidating for non‑technical users
  • Signature‑only detection may miss zero‑day threats
  • Limited official GUI tools

Frequently Asked Questions

How often are virus definitions updated?

ClamAV releases new signature databases daily, and the software can be configured to fetch updates automatically.

Can ClamAV be used on Windows desktops?

Yes, ClamAV provides Windows binaries that can be run manually or scheduled via scripts.

Is there a graphical user interface available?

ClamAV itself is command‑line based, but third‑party GUIs like ClamTK exist for easier interaction.

What support channels are provided?

Support is offered through email and extensive online documentation, with community forums for additional help.

Pricing Overview

View full pricing →
Free

Detailed plans are not listed. Visit the official website for pricing information.

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About the Tool

Unclaimed Listing
Target AudienceSystem Administrators and Security Professionals

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Tags

AntivirusOpen-sourceSecurityMalware DetectionVirus Scanner

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