We've been using Zube at Interviewed and really like it. We'd been using Github Issues previously but found it hard to prioritize our tickets in a way that was

We've been using Zube at Interviewed and really like it. We'd been using Github Issues previously but found it hard to prioritize our tickets in a way that was natural for us. The ability to drag and drop reorder our backlog has really helped with that. Also, the UI works well for quick updates during our morning standup.