I think it depends on the size and scope of your project. As devs, we all start with simple text files + email for everything, and then add more specialized to

I think it depends on the size and scope of your project. As devs, we all start with simple text files + email for everything, and then add more specialized tools from there. Complexity is endless, and depending on the scope of your project, it may not make as much sense to add more tools. I have met many people who just skip the entire bug tracking system and dump the whole thing in trello or somewhere else. But I couldn't imagine doing that on a huge project with thousands of issues and customers.