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TCP Optimizer

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TCP Optimizer

  -  716.8 KB  -  Freeware
  • Latest Version

    TCP Optimizer 4.1.1 LATEST

  • Review by

    Daniel Leblanc

  • Operating System

    Windows 8 / Windows 8 64 / Windows 10 / Windows 10 64 / Windows 11

  • User Rating

    Click to vote
  • Author / Product

    Speed Guide, Inc. / External Link

  • Filename

    TCPOptimizer.exe

The TCP Optimizer is a free, easy Windows program that provides an intuitive interface for tuning and optimizing your Internet connection. There is no installation required, just download and run as administrator.

The program can aid both the novice and the advanced user in tweaking related TCP/IP parameters in Windows, making it easy to tune your system to the type of Internet connection used. The tool uses advanced algorithms, and the bandwidth*delay product to find the best TCP Window for your specific connection speed.

It provides for easy tuning of all related TCP/IP parameters, such as MTU, RWIN, and even advanced ones like QoS and ToS/Diffserv prioritization. The program works with all current versions of Windows and includes additional tools, such as testing average latency over multiple hosts and finding the largest possible packet size (MTU).

The TCP Optimizer is targeted towards broadband internet connections, however, it can be helpful with tuning any internet connection type, from dialup to Gigabit+ :) It is completely free, requires no installation, and has been downloaded over 8 Million times.

TCP Optimizer is an "Internet Accelerator" which helps to dramatically boost your Internet speed. It optimizes Internet-related settings on your end of the connection (your PC), allowing for faster throughput.

The program works with any Internet connection, from dialup to leased lines. It is a completely free program that supports all current Windows versions, and it can improve Internet speed as much as 200% in some cases, at no additional cost to you. It is completely legal and often recommended by ISPs as a tool to troubleshoot and optimize internet connections.

It works best for optimizing broadband Internet connections, however, it will work for dial-up and LANs to a degree. Note that it is a program that optimizes your end of the connection, and you will still be dependent on the feed that your ISP provides.

It will increase your Internet speed regardless of Internet connection type/ISP. Whether it is your home-based machine or office desktop... The Optimizer will increase your connectivity rate. Dial-up modems (28.8/56k), Cable Modem Connections, DSL Connections, Satellite, T1 and Optical Fiber are all fully supported.

Note: Requires Administrator privileges.

  • TCP Optimizer 4.1.1 Screenshots

    The images below have been resized. Click on them to view the screenshots in full size.

    TCP Optimizer 4.1.1 Screenshot 1
  • TCP Optimizer 4.1.1 Screenshot 2
  • TCP Optimizer 4.1.1 Screenshot 3
  • TCP Optimizer 4.1.1 Screenshot 4
  • TCP Optimizer 4.1.1 Screenshot 5

What's new in this version:

- Changed the recommended "optimal" congestion control algorithm from CTCP to CUBIC for newer Windows 10 and Server 2019 builds. CUBIC works slightly better for pure throughput, CTCP may work slightly better for VoIP and gaming in combination with ECN and lossy connections.

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