A completely free network traffic analysis tool
The first choice for SMB network operations
Help you see your network traffic clearly and pinpoint issues fast
Full traffic capture · Complete retention · On-demand replay
Continuously captures and stores network traffic around the clock. Unlike "Wireshark + tcpdump" workflows that rely on manual triggers and only handle single-point issues, AnaTraf lets you replay the actual traffic from any past incident.
When problems occur, most systems only leave you with logs. AnaTraf preserves re-parseable raw traffic data so network issues can be re-analyzed after the fact to find the true root cause.
Deep parsing for 400+ protocols, including industrial protocols such as Modbus TCP, OPC UA, and S7, to meet the unique demands of industrial control environments.
Powered by large language models, AnaTraf turns complex network traffic data into plain-language reports. Even non-experts can understand them and pinpoint where the problem lies.
Cut troubleshooting time from hours to minutes. The intelligent analysis engine automatically correlates alerts with traffic data to quickly locate the fault.
Flexible alert rule configuration with multiple notification channels including email and WeChat, so network anomalies are caught early and business continuity is preserved.
No dedicated network engineer required, no expensive hardware needed — a standard office PC is all it takes.
AnaTraf makes it easy for small and mid-sized businesses to keep their networks healthy.
Network feeling slow? AnaTraf tells you within minutes whether it's bandwidth, the server, or a device — no more blind troubleshooting.
Runs on any standard office PC. The Windows portable edition needs no installation — just download and double-click to start.
No traffic caps, no storage limits, no time limits — SMBs can start at zero cost with no worries.
24/7 continuous capture means raw traffic is always available for review, so you never have to argue about what really happened.
No dedicated server needed. Install on a standard office computer — ideal for office networks of 10–200 users.
Windows portable edition — just download, double-click, and you're capturing traffic in under 5 minutes. No complex setup.
AI-powered traffic interpretation requires no specialist knowledge. Anyone can read the reports, and it's free to use.
Scan the QR code to join our WeChat group. The AnaTraf team and community users are ready to help whenever you have questions.
Free license scope: enterprise / government in-house office networks, personal learning and research.
Out-of-scope (paid) scenarios: laboratories, carrier networks, production environments, industrial settings, data centers, etc.
See the AnaTraf Free Edition User Agreement for details.
Common network operations challenges can all be solved with AnaTraf
When the network slows, drops, or behaves abnormally, quickly identify whether the cause is a server, a network device, or bandwidth. Cut hours of work down to minutes.
Deep parsing for Modbus TCP, OPC UA, S7, and other industrial protocols to keep control systems stable and monitor PLC communications in real time.
See exactly who, when, and which applications are consuming bandwidth — the data foundation for optimization and capacity planning.
Quantitatively evaluate carrier dedicated-line quality with visual dashboards for bandwidth, latency, and packet loss — so line issues can be backed by evidence.
Meet security compliance requirements such as MLPS (等保). Retain raw traffic long-term and replay every detail of any security incident.
Continuously monitor network performance metrics and detect degrading trends like rising latency or packet loss before they become incidents.
AnaTraf ships in multiple form factors to fit different scenarios
Pure software, completely free. Available as a Windows portable edition and KVM / VMware virtual machine images.
View DetailsCompact and battery-powered — ideal for small network diagnostics and mobile field operations.
View Details1U / 2U standard rack-mount form factor with high-performance hardware and multi-link monitoring support.
View DetailsCompletely free, forever
The free edition includes WeChat group technical support — scan the QR code to join.
Scan to join our WeChat group (Chinese support)
