CFosSpeed

cFosSpeed
DevelopercFos Software GmbH
Release7 July 2004; 22 years ago (2004-07-07)
Stable release
13.10 Build 3005 / 13 March 2026; 4 months ago (2026-03-13)
Operating systemWindows 10 and later
PlatformIA-32 and x86-64
TypeTraffic shaping
LicenseShareware
Websiteatlas-cfosspeed.com

cFosSpeed is a traffic shaping app for the Windows operating system. It installs a device driver on the network stack to perform stateful packet inspection on the application layer traffic. It has been noted as causing some issues with network connections,[example needed] and can be difficult to uninstall.[1]

Operation

The app divides Internet traffic into different classes based on program name, protocol (TCP, UDP, or application layer protocols), port numbers, DSCP tags, and other criteria. Outgoing traffic is queued and sent out in order of priority.[2] The app uses TCP flow control to send new data only after older data has been received. It may also throttle data by lowering the TCP window size. Finally, it could act as a packet filter firewall.[3] Users may customize their traffic classifications.[4]

cFosSpeed may cause device driver on Windows 11, but they are easily fixable.[5]

Distribution

cFosSpeed is available as shareware. This app has been bundled with motherboards from MSI,[1] Gigabyte Technology (branded as "Gigabyte Speed"),[6] and ASRock (branded as "XFast LAN").[7] It has been noted as causing some issues with network connections, and can be difficult to uninstall when bundled.[1]

Similar Products

References

  1. ^ a b c Loynds, Joel (5 October 2021). "cFosSpeed: How to Uninstall on Windows 11 and 10". PC Guide. Retrieved 16 January 2022.
  2. ^ Lüders, Christoph; Winkler, Martin (20 February 2008). "Tweaking TCP/IP". The H Online. Heise Media UK Ltd.
  3. ^ "List of cFosSpeed's features". cFos website. cFos Software GmbH. Retrieved 18 January 2011.
  4. ^ "Filter language used to classify packets". cFos website. cFos Software GmbH. Retrieved 18 January 2011.
  5. ^ Gautam, Abhay (2022-08-29). "cFosSpeed Driver Windows 11: How to Fix Installation Error". Retrieved 2023-02-06.
  6. ^ "GIGABYTE - Motherboard - Socket 1150 - GA-Z87X-D3H (rev. 1.x)". Gigabyte website. Gigabyte Technology. Retrieved 2015-10-03.
  7. ^ "ASRock XFast LAN - cFos Software". cFos website. cFos Software GmbH. Retrieved 2014-01-14.

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