It helps you to optimize your Internet connection and Browsing experience!

TCP Optimizer

TCP Optimizer 3.0.8

  -  644 KB  -  Freeware
  • Latest Version

    TCP Optimizer 4.1.1

  • Operating System

    Windows 7 / Windows 7 64 / Windows 8 / Windows 8 64 / Windows 10 / Windows 10 64

  • User Rating

    Click to vote
  • Author / Product

    Speed Guide, Inc. / External Link

  • Filename

    TCPOptimizer_v308.exe

  • MD5 Checksum

    31d0de866c71cd80c7db1a87f5a1df93

Sometimes latest versions of the software can cause issues when installed on older devices or devices running an older version of the operating system.

Software makers usually fix these issues but it can take them some time. What you can do in the meantime is to download and install an older version of TCP Optimizer 3.0.8.


For those interested in downloading the most recent release of TCP Optimizer or reading our review, simply click here.


All old versions distributed on our website are completely virus-free and available for download at no cost.


We would love to hear from you

If you have any questions or ideas that you want to share with us - head over to our Contact page and let us know. We value your feedback!

  • TCP Optimizer 3.0.8 Screenshots

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

    TCP Optimizer 3.0.8 Screenshot 1
  • TCP Optimizer 3.0.8 Screenshot 2
  • TCP Optimizer 3.0.8 Screenshot 3
  • TCP Optimizer 3.0.8 Screenshot 4
  • TCP Optimizer 3.0.8 Screenshot 5

What's new in this version:

- Added NetworkThrottlingIndex gaming tweak to the Advanced tab
- Changed "MaxUserPort" optimal value from 65535 to 65534
- Minor internal improvements