Zube and Waffle are similar in the sense that we both allow developers to better organize their GitHub issues on a kanban board. The main difference between Waffle and Zube is that Zube provides many features that Waffle lacks. Zube lets team leads easily triage incoming issues with a powerful issue manager. Zube allows GitHub issues to be grouped together into a single ticket, and automatically tracks the progress of the underlying issues. Zube has story points and burndown charts. And Zube’s GitHub integration allows you to fully manage your issues, labels, and milestones, whereas Waffle’s less complete integration does not. So I guess you could say that Waffle is a simple way to visualize your GitHub issues and Zube is a project management platform for your GitHub issues.