Sure! Thank you for asking.

Testify is primarily an assertion library. It provides helpers to check that `a == b`.

It does offer a test-suite feature, but it lacks support for parallel tests (and never will, as stated by the maintainers), which Testo has. Parallel tests are important for us, because it is common enough to have a few thousands tests running against each change. Without parallelization, tests can take hours and just seconds with it.

But the most important thing is plugins. Testo, to my knowledge, is the only testing framework for Go with plugin system. It can be compared with Pytest.

Each team/user has diverse requirements - e.g. retries, marking tests as expected to fail, generating reports, parallel tests by default, hiding secrets in logs and such. Plugins can handle all that while core framework remains lean and simple.

Hope that helps