Restyaboard is an alternative open-source to Trello, but with smart additional features such as offline sync, diff / revisions, nested comments, multiple view layouts, chat, and more. And since it is self-hosted, it is possible to guarantee information, confidentiality, and IP protection.
Restyaboard is more like a sticky virtual note to coordinate all and activities. In addition, it is ideal for management of Kanban, Agile, Gemba board and business process / workflow. With efficient plugins it can be extended
Today, Restyaboard is taking advantage of several universities, automotive companies, government organizations, etc. from across Europe.
Please refer the video on Install Restyaboard 1-click app through DigitalOcean Marketplace