In today’s world you can easily have hundreds - if not thousands - of Docker-enabled devices in your environment. Most of these systems run without any form of clustering or run a lean orchestrator such as Docker Swarm or Kubernetes.
Remote devices may be distributed across multiple sites and/or across many different networks, some may even be attached to the internet using mobile data or satellite. To be managed effectively, engineers need a way to control distributed instances centrally, which is exactly what Portainer does brilliantly.
Provided as open core software under the zlib license, Portainer CE is 100% forever free with its source code readily available on GitHub
After more than 20 versions, Portainer CE provides a host of outstanding functionality for the desktop or mobile device. Portainer.io’s also developing an upgrade path for those using Portainer in complex commercial environments
Portainer CE has an active user Community which is well worth joining. It has a great range of Portainer resources and member-only assistance for novice and experts alike. There is also a paid support option for open source users wanting assistance over and above what the community offers.