Dokku vs Kamal

Dokku is a self-hosted Platform as a Service for building and running applications from Git pushes on a server you choose. It can deploy applications with Heroku buildpacks, Dockerfiles, or Docker images, targeting a single server, Docker containers, or a K3s cluster. Dokku routes web processes, manages background processes and automated cron tasks, and supports deployment rollback and audit logs. Its plugin architecture allows users to add functionality, with official plugins for PostgreSQL, MySQL, Redis, MongoDB, Elasticsearch, and Let’s Encrypt. Per-application SSL/TLS certificate management is supported, and HTTPS responses have HSTS enabled by default. Dokku recommends SSH key authorization for pushes. The free open-source plan costs nothing. Dokku Pro costs $849, paid once and adds a web interface, JSON API, HTTP(S) app push, management tools, scaling, logs, team management, and email support.

Kamal has no write-up on Specifiction yet; its figures are above.