Both for my personal projects, and my full time work, including their customers spreadsheets were used to keep track of manual test plans. This is fine for relatively simple projects, and maybe even small teams, but as soon as you get too many steps or too many team members it becomes a mess. It becomes even worse if you need screenshots to explain what the problem is.

Test Track is designed to be a reliable, affordable test management system, allowing collaborative work between various team members including development teams.

It includes all the core functionality, such as manual test, automated test run submission from CI/CD and flaky test detection