There are many alternatives to Kanboard as a self-hosted solution if you are looking for a replacement. The best Self-Hosted alternative is Wekan, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to Kanboard and many of them are available as a self-hosted solution so hopefully you can find a suitable replacement. Other interesting Self-Hosted alternatives to Kanboard are Redmine (Free, Open Source), Taiga.io (Freemium, Open Source), OpenProject (Freemium, Open Source) and JIRA (Paid).
Taskulu is an online management and collaboration platform that takes the pain out of managing large teams and projects by allowing you to manage every resource under one roof and preventing resource fragmentation!
Nullboard is a light minimalist kanban, specifically designed to be compact, readable and quick in use. All data is stored locally. The app itself can be used in a completely offline fashion, by simply opening a local copy of it in a browser.
Kantree is a collaboration tool for teams to organize their projects on their own terms. It allows to plan and manage projects of any kind - together and in real-time - while helping teams to find, refine and create the methodology that best fit the needs of their projects.