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You can try ChatKeeper for free without providing your name, email, credit card, or anything else. If you don’t purchase a license, there will be some limitations as described here.

ChatKeeper is a standalone executable. That means you don’t need to install it - just download and run (although you might want to put it somewhere in your path).


ChatKeeper 1.2.2 - May 19, 2025

Work continues on the GUI version of ChatKeeper, but in the meantime I have an update for you.

Version 1.2.2 now produces markdown for ChatGPT’s “Chain of Thought”. This is the text that you might see flashing by while it’s “Reasoning”, followed by something like “Thought for 15 seconds.

In your markdown, it might render something like this:

ChatKeeper sample output - reasoning
ChatKeeper Sample Output - Reasoning
That bit at the top before "Here's a single-command way" is the new part. I always find this part fascinating and feel like I get more out of the responses when I see what it considered along the way.

Before this release, any conversations containing Chain of Thought would result in some (harmless) warnings about unhandled message types thoughts and reasoning_recap.

Other Stuff

There are a few other minor tweaks, too:

This version continues to build on all the great new features of 1.2.0:

Download ChatKeeper 1.2.2 for Windows (x86/64) (37,806,080 bytes)
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Install ChatKeeper 1.2.2 for Mac via Homebrew

brew install martian-software-inc/chatkeeper/chatkeeper

Download ChatKeeper 1.2.2 for Mac (arm64) - executable (33,827,912 bytes)
SHA1 SHA256

Download ChatKeeper 1.2.2 for Mac (x86/64) - executable (34,524,024 bytes)
SHA1 SHA256

Download ChatKeeper 1.2.2 for Linux (x86/64) (10,100,200 bytes)
SHA1 SHA256


After downloading…


Older Versions of ChatKeeper

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