LeanLabs Kanban vs Nutcache: What are the differences?

Developers describe LeanLabs Kanban as "Free, open source, self-hosted, Kanban board for GitLab issues". Leanlabs kanban is built from the ground up using the GitLab public API. Kanban issues are GitLab issues, you will never have to deal with synchronization problems. Keep issues where they belong, in the repository with your code!. On the other hand, Nutcache is detailed as "All-in-one collaborative project management solution". Nutcache takes the project management efficiency one step further by providing you with all the necessary tools you need to carry out the work of the project for the purpose of meeting both the project manager’s and the client’s shared goal.

LeanLabs Kanban and Nutcache can be categorized as "Project Management" tools.