The world's leading network protocol analyzer
Wireshark lets you dive deep into your network traffic - free and open source.
Our members & sponsors. Join our community of industry leaders supporting open-source innovation. Wireshark is the world’s leading network protocol analyzer, trusted by IT professionals and cybersecurity experts worldwide. What is Wireshark? It’s a powerful tool that captures and analyzes network traffic in real time, helping you detect issues, troubleshoot performance, and investigate security threats. The program Wireshark supports hundreds of protocols and provides deep packet inspection with detailed filtering. To get started, simply perform a Wireshark download from the official site. Wondering how to use Wireshark? Start by capturing packets, apply filters, and analyze data to gain clear insights into your network.
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Wireshark Certified Analyst - Tell Us More!
Whats New in Wireshark 4.6?
Dr. Kelley Misata - Shift the Conversation: Open Source is Free, But Not Free-Free
Recent News
Stay up to date with the latest info from the Wireshark team.
Announcement
2025-10-08
What’s New In Wireshark 4.6?
Announcement
2025-09-08
Exclusive Offer for SharkFest’25 EUROPE Attendees
Announcement
2025-06-01
Announcing the Wireshark Certified Analyst (WCA) Certification
Struggling with Network Diagnostics?
Wireshark is your go-to tool for network analysis and debugging.
Identify bottlenecks & troubleshoot issues faster.
Gain insights into network protocols with ease.
Understand traffic patterns & optimize performance.
Protect and optimize your network with confidence.
Trusted by Millions Worldwide
Wireshark is the choice of professionals worldwide.
20M+
20+ million downloads annually
100K+
Active community of 100k+ contributors
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Supported in over 20 languages
Why Wireshark?
Free, Open Source, and Powerful
Comprehensive Network Analysis. Wireshark is a powerful, open-source network protocol analyzer that allows users to capture and interactively browse the traffic running on a computer network, providing deep inspection of hundreds of protocols.
Open Source and Free Forever. As an open-source tool, Wireshark is freely available for use and distribution, with its source code accessible under the GNU General Public License (GPL).
Supported by an Active Community. The Wireshark project is supported by a vibrant community of developers and users who contribute to its ongoing development and enhancement.
Download Wireshark
Choose your platform and start analyzing network traffic today.
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Stable Release: 4.6.3
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Old Stable Release: 4.4.13
Frequently Asked Questions
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What platforms does Wireshark support?
Wireshark runs on most computing platforms including Windows, macOS, Linux, and UNIX. It can also be built from source on other platforms. For more information, see the Download page.
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Is Wireshark really free to use?
Wireshark is "free software"; you can download it without paying any license fee. The version of Wireshark you download isn't a "demo" version, with limitations not present in a "full" version; it is the full version. The license under which Wireshark is issued is the GNU General Public License version 2. See the GNU GPL FAQ for some more information.
Wireshark is maintained by the Wireshark Foundation, a non-profit organization dedicated to supporting the development and distribution of Wireshark. The Foundation is funded by donations from users and organizations that rely on Wireshark for their network analysis needs, consider supporting us by making a donation!
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Where can I find tutorials and resources?
Our Learn page is a great place to start. Our also has many tutorials and classes on various topics related to network analysis.