Heroku's Basic dyno starts at $7/month for just 512MB of RAM, and that's before Postgres or Redis add-ons are priced in separately and scale steeply once a database moves past hobby tier. Running review apps, staging, and production as separate environments multiplies dyno and add-on costs further, since Heroku bills each environment as its own resource. Coolify and Dokploy both use a bring-your-own-server model that needs nothing but SSH access to a VPS, so the control plane itself never touches your data or your bill. Dokku and Dokploy can run Heroku's own v2 buildpacks directly against a Dockerfile-free repo for a true lift-and-shift, while Dokploy and CapRover (source-available) add native Docker Swarm clustering for multi-node scaling. For teams who prefer zero GUI abstraction over a web dashboard, Kamal acts as a CLI-only deployment runner—deploying straight over SSH with zero-downtime cutover handled by kamal-proxy
| Name | Main Category | Sub-Category | Target Alternative | Free Tier Summary | Self-Hostable? | Short Description | Primary Link |
|---|---|---|---|---|---|---|---|
Dokploy | DevOps & Application Hosting | PaaS / Docker Swarm Orchestration | Heroku / Vercel / Netlify | 100% Free - Self-Hosted (Apache-2.0; paid Dokploy Enterprise adds on-prem compliance features) | Yes - Docker | Docker Swarm-native PaaS with a TypeScript dashboard supporting Nixpacks, Heroku v2 buildpacks, and Dockerfiles, plus a full REST API for scripting deploys, backups, and multi-server clusters via Traefik routing. | |
CapRover | DevOps & Application Hosting | PaaS / Docker Swarm Clustering | Heroku / Vercel | 100% Free - Self-Hosted (Source-Available / Modified Apache-2.0: free features remain open-source; paid features cannot be redistributed) | Yes - Docker | Docker Swarm-based PaaS with a web dashboard, a one-click app marketplace covering WordPress, Ghost, and Node.js stacks, and automatic Let's Encrypt SSL, backed by a decade of production track record. | |
Kamal | DevOps & Application Hosting | SSH-Based Deployment Tool | Heroku / Vercel (manual SSH-based deploys) | 100% Free - Self-Hosted (MIT License) | Yes - Binary | 37signals' daemon-less deploy tool: a Ruby CLI that SSHes into your own servers, builds and runs Docker containers, and performs zero-downtime cutovers through its own kamal-proxy, with no control-plane software running anywhere. | |
Coolify | DevOps & Application Hosting | PaaS / Container Deployment | Heroku / Vercel / Render / Netlify | 100% Free - Self-Hosted (Apache-2.0, no feature gates; optional Coolify Cloud control plane at $5/mo) | Yes - Docker | Generates a PR-based preview deployment on every Git push the same way Vercel does, auto-detecting Next.js and other frameworks via Nixpacks and serving static output through Caddy or Traefik on your own VPS. | |
Dokku | DevOps & Application Hosting | PaaS / Git-Push Deployment | Heroku | 100% Free - Self-Hosted (MIT License; official web UI is paid-only via Dokku Pro) | Yes - OS Package / Script | The original git-push-to-deploy mini-Heroku, running Heroku's actual v2 buildpacks or a Dockerfile on a single server with Nginx routing, official Postgres/MySQL/Redis plugins, and Let's Encrypt built in. |
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