The project management tool Height.app is shutting down, which is a real bummer - our company was one of the early adopters and we have used it for years. Height had one of the best designs I've ever seen, and I had high hopes for it.

This is a reminder that any service can be shut down at any moment, with no safeguards in place. It's also a reminder of the power of open source - something we don't have in this case.

I have a lot of requirements for a project management tool - most notably a solid API, linkable tasks with task IDs, and a good user interface. After this experience, I'd prefer something open source. Maybe Plane.so, looks very similar to Height.app?

Any solid alternatives to tools like Jira, ClickUp, Height, or Favro? I'm open to suggestions.