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TCP Optimizer 4.1.1

A tool that lets you modify TCP and IP related parameters

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TCP Optimizer screenshotThe TCP Optimizer is a small utility that will offer you a simple and intuitive interface for modifying IP and TCP related parameters in the Windows Registry. The application takes into account the TCP/IP implementation oddities, all related RFCs, checks all Registry locations for the same TCP/IP parameters and adds only the needed Registry parameters.

The TCP Optimizer is able to help both novice and advanced users in improving the TCP/IP parameters in Windows and enhancing their system to the type of the used Internet connection. the program uses advanced methods and algorithms to discover the best TCP Window for your specific connection speed.

The program supports all the versions of windows and provides some additional tools, such as finding the largest possible packet size, or testing average latency over several hosts.


  • It's suitable for both novice and advanced users.
  • Provides various additional tools.
Name TCP Optimizer
Version 4.1.1
Developer | see all products from this developer
Product Homepage TCP Optimizer
License Free (Freeware)
Last Week Downloads 12
All Time Downloads 3,354
Filename TCPOptimizer.exe
Filesize 0.7MB
MD5 Checksum D8292150C8CE862A97A923318DF07805
OS Support Windows All
Category Internet

100% CLEAN Certification

BadgeTCP Optimizer has been tested by team against viruses, spyware, adware, trojan, backdoors and was found to be 100% clean. Our editors will recheck this software periodically to assure that it remains clean.


Old Versions

Software Date Added
TCP Optimizer 4.1.1 July 12, 2021 - Latest Version
TCP Optimizer 4.1.0 March 04, 2019
TCP Optimizer 4.0.9 February 04, 2019
TCP Optimizer 4.0.8 July 13, 2018
TCP Optimizer 4.0.6 March 07, 2017

Download the free TCP Optimizer