A lightweight and fast application firewall for macOS

TCPBlock for Mac

TCPBlock 4.0

  -  1.09 MB  -  Freeware
  • Latest Version

    TCPBlock 4.2

  • Operating System

    Mac OS X

  • User Rating

    Click to vote
  • Author / Product

    Jo Delantis / External Link

  • Filename

    TCPBlock_v4.0.dmg

  • MD5 Checksum

    837ea9d2446f3131fd2d772bedc272dc

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 TCPBlock 4.0.


For those interested in downloading the most recent release of TCPBlock for Mac 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!

  • TCPBlock 4.0 Screenshots

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

    TCPBlock 4.0 Screenshot 1
  • TCPBlock 4.0 Screenshot 2
  • TCPBlock 4.0 Screenshot 3

What's new in this version:

- Cryptographical hash filtering.
- Optionally block incoming connections too.
- Support for Mac OS 10.5 removed.