There's also the Github Projects refresh: https://github.com/features/issues (I don't know what it's called now, they keep rebranding it with confusing generic terms, but it's a different UI than just the "Issues" tab in a repo)

Project viability is either very simple: "Is this still what we want?" or more complex than most Agile tools support and you need Real Options Analysis or maybe a simpler decision tree analysis of project investment and outcome value. Velocity is meaningless.

I prefer Github project boards unless a project can justify a specific need for more features.

That said, most of my clients use JIRA.