Kiwi TCMS v6.1.1 – open source test case management
kiwitcms.org
kiwitcms.org
The linked pages doesn't say it and google isn't helpful either. I'd never seen it before, so I wasn't sure what it was.
It seems to be a tool for managing testing that is done manually, rather than automated CI tests
there are many tools for running automated tests, usually known as CI (Continuous Integration) usually based around some concept of a 'build pipeline', which might start with checking code out of version control, have running the tests as one of the steps, and if they pass then do the next step
Both appear to be relatively similar in terms of features. Squash has a different approach as to how items are organized and probably the workflows around this organization.
Squash appears to be a Windows exe, although written in Java. Kiwi TCMS is distributed as a Docker image and is fully supported on Linux. Kiwi TCMS is written with Python and Django.
Both are open source and have online demos. For Kiwi TCMS you can register for a full-featured demo. For Squash it looks like you can use one of their pre-selected accounts.
Squash appears to have more fancier charts though.
Disclaimer: I am the project lead for Kiwi TCMS.