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Ever since 2001, Colasoft has dedicated itself to the development of innovative network analysis software and solutions. The flagship products nChronos and Capsa network analyzer are offering real-time and back-in-time network analysis solutions for organizations of all sizes. Colasoft is a fast-growing company with more than half million users in over 80 countries. Featured customers include IBM, Dell, Philips, Emerson, and other industry leading companies.
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Capsa is a portable network analyser for both LAN and WLAN which performs real-time packet capturing, 24/7 network monitoring, advanced protocol analysis, in-depth packet decoding, and automatic expert diagnosis. It provides a comprehensive and high-level visibility to your entire network, helps network administrators or network engineers quickly pinpoint and resolve various application problems, and therefore enhance end user experience and guarantee a productive network environment.

Capsa is a great network tool to help lower IT cost, improve network security, enhance customer service, and be more agile.

Key Features:

  • Real-time capture and save data transmitted over local networks, including wired network and wireless network like 802.11a/b/g/n;
  • Identify and analyse more than 300 network protocols, as well as network applications based on the protocols;
  • Monitor network bandwidth and usage by capturing data packets transmitted over the network and providing summary and decoding information about these packets;
  • View network statistics at a single glance, allowing easy capture and interpretation of network utilisation data;
  • Monitor Internet, e-mail and instant messaging traffic, helping keep employee productivity to a maximum;
  • Diagnose and pinpoint network problems in seconds by detecting and locating suspicious hosts;
  • Map out the details, including traffic, IP address, and MAC, of each host on the network, allowing for easy identification of each host and the traffic that passes through each;
  • Visualise the entire network in an ellipse that shows the connections and traffic between each host.

Capsa Enterprise

Capsa Enterprise is one of Colasoft's flagship products designed for enterprise users. It not only combines all the features of Capsa Professional and Capsa WiFi, but also has more advanced functions like the exclusive Security Analysis Profile. It performs network monitoring, troubleshooting and analysis for both wired & wireless networks including802.11a/b/g/n. Whether you're a network administrator who needs to identify, diagnose, and solve network problems quickly, an IT professional who wants to monitor user activities on the network, a security manager who needs to ensure that the corporation's communications assets are safe, Capsa Enterprise is the perfect choice for you.

Capsa WiFi

Capsa WiFi delivers professional levels of wireless network traffic capturing, monitoring and analysis for network administrators to analyse any of the 802.11 a/b/g/n. Based on the latest Network Driver Interface Specification (NDIS) 6.0 library, almost all wireless cards supported by Windows Vista and Windows 7 will work with Capsa WiFi, no special wireless network adapter required.

Capsa WiFi visualises your wireless network landscape, you can easily find out malicious network access so as to guarantee a secure WLAN.

Capsa Professional

Capsa Professional is the most cost-effective network analyser software designed for small business, budget-limited business or family users.

With the great capability of Ethernet monitoring, troubleshooting and analysis, Capsa Professional provide you a secure and visible local network.

Capsa Free

Capsa Free is a must-have freeware network analyser for Ethernet monitoring, troubleshooting and analysis. It provides users with great experience to learn how to monitor network activities, pinpoint network problems,enhance network security and so on. Moreover, Capsa Free is a perfect choice for students, teachers and computer geeks to learn network protocols and networking technology knowledge.

System Requirements

Software Systems


  • Windows XP (SP 1 or later) and 64bit Edition
  • Windows Server 2003 and 64bit Edition
  • Windows Vista and 64bit Edition
  • Windows 2008 and 64bit Edition
  • Windows 7 and 64bit Edition

Relied Browser:

  • Internet Explorer 6.0 or higher

Hardware Requirements

Minimum Requirements:

  • CPU: P4 2.8GHz
  • RAM: 2GB
  • Internet Explorer 6.0

Recommended System:

  • CPU: Intel Core Duo 2.4GHz
  • RAM: 4GB or more
  • Internet Explorer 6.0 or higher

Supported Network

  • Ethernet

    Capsa will run with a NDIS 3 or higher compatible Ethernet, Fast Ethernet, or Gigabit promiscuous mode network adapter. Promiscuous mode is the ability to have Capsa take over the driver and put it into a mode that will allow it to passively capture all packets on an Ethernet wire, regardless of the address to which they are being sent/received.

  • Wireless

    Colasoft has tested adapters based on Atheros, Ralink, Marvell and Intel chipsets. Other wireless cards may work with this version to the same degree that they worked in prior versions.

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