4 Open Source alternatives to Heroku in 2026
We compare 4 self-hostable tools you can deploy on your own server in minutes, with license, tech stack and a ready-to-copy docker-compose.
Quick comparison
Sorted by featured first, then GitHub stars as a tiebreaker — the same rule we use across the whole site.
Detailed profile of each alternative
Alternative to Vercel, Netlify, Heroku
Self-hosted PaaS with a Vercel-like experience, a free alternative.
Alternative to Heroku, Render
Lightweight PaaS on Docker Swarm, a simple alternative to Heroku.
Alternative to Heroku
Open source mini-Heroku, deploy with git push.
Alternative to Heroku, Vercel
Self-hosted Heroku-like PaaS on Docker Swarm, an alternative to Heroku.
How much does Heroku cost, and how much can you save?
Heroku charges a recurring monthly fee. Self-hosting the alternative, you only pay for the server — usually a few dollars a month.
Calculate your exact savings in the SaaS Audit →Already know which one you want?
Add Coolify to the Stack Builder and generate a ready-to-deploy docker-compose.yml, alone or alongside the rest of your stack.
Build my stackFrequently asked questions
Do I need Docker to self-host a Heroku alternative?
2 out of 4 have a ready-to-copy docker-compose.yml; the rest use their own installer (each tool's page says which).
How much RAM do I need at minimum?
The lightest option on this list is CapRover, which runs on as little as 256MB of RAM — enough for a cheap VPS.
Are they all 100% free, or are there paid features like on Heroku?
2 out of 4 are 100% FOSS. The rest are Open-Core: the core is free and self-hostable, but some advanced feature may stay paid — we call it out on each tool's page.