SOGo is a fully supported and trusted groupware server with a focus on scalability and open standards.
Part of the Mailcow stack.
Portainer is a simple management solution for Docker. Easily manage your Docker hosts and Docker Swarm clusters via Portainer web user interface.
Træfik is a modern HTTP reverse proxy and load balancer that makes deploying microservices easy. Træfik integrates with your existing infrastructure components and configures itself automatically and dynamically.
Pi-hole is a Linux network-level advertisement and internet tracker blocking application which acts as a DNS sinkhole, intended for use on a private network.