Coolify is a self-hosted PaaS that handles deployment, SSL, database provisioning, and reverse proxying for your applications. Point it at a server, connect your Git repos, and it handles builds, deployments, SSL certificates, and reverse proxying. It's your own private Heroku running on a $5/mo server.
Self-hosting is free under Apache 2.0. You get automatic deployments from Git, built-in database provisioning (Postgres, MySQL, Redis, MongoDB), wildcard SSL via Let's Encrypt, and a clean dashboard. It's impressive how much it covers.
The catch: you're trading money for ops time. When a deployment fails at 2 AM, there's no support team. It's you and the Docker logs. The managed cloud option starts at $5/mo per server but you're still managing the underlying infrastructure decisions. And Coolify itself needs updates, which occasionally break things if you're not careful with the upgrade path.
It's a single-server PaaS (platform-as-a-service) that turns any Linux box into a deployment platform. Git push, automatic Docker build, zero-downtime deploys, SSL via Let's Encrypt, and plugin support for databases.
This is the tool for developers who want the simplicity of Heroku without the cost, and who have one server (not a Kubernetes cluster). Perfect for side projects, MVPs, internal tools, and small production apps.
MIT, battle-tested for years. The most popular self-hosted PaaS.
The catch: single server only. When you outgrow one box, Dokku doesn't scale horizontally. You graduate to Kubernetes, Coolify, or a managed platform. Also, you're the ops team. SSL renewals, server security patches, database backups, monitoring, all on you. Dokku makes deployment easy but doesn't make operations disappear.
Compare Deployment/PaaS Tools — The Open Source Drop
Capacitor bridges web apps to native mobile platforms: write your app with web tech, then access native device APIs (camera, GPS, push notifications) through a clean plugin system. It's a platform-as-a-service (PaaS) you install on your own server. One-click apps, automatic SSL via Let's Encrypt, Docker under the hood.
Setup takes about 20 minutes on a fresh Ubuntu server. After that, you get a web dashboard where you can deploy apps from Git, Docker images, or one-click templates (WordPress, Postgres, Redis, Ghost, etc.). It handles nginx reverse proxying, SSL certificates, and Docker orchestration automatically.
Mature and stable. The community is active and the one-click app library is extensive. Completely free. No paid tier. No cloud offering. You bring the server, CapRover runs on it.
The catch: single-server by default. You can add worker nodes for horizontal scaling, but it's Docker Swarm underneath, not Kubernetes. For most small-to-medium workloads, that's fine. But if you're scaling to dozens of services, Coolify (which also does this) has more active development, or Dokku if you want something even simpler. CapRover's web UI is functional but dated. And if something breaks at the Docker/nginx layer, you're debugging it yourself.
Floci is a drop-in replacement for LocalStack that's actually free. This matters because LocalStack is sunsetting its free community tier in March 2026.
Floci starts in ~24ms, uses ~13 MiB of memory, and the Docker image is ~90 MB vs LocalStack's ~1 GB. It runs on port 4566 (the same port LocalStack uses), so switching requires zero code changes. Built in Java with Quarkus, compiled to a native binary via GraalVM.
MIT licensed. Already supports CloudFormation, Step Functions, DynamoDB Streams, Kinesis, Cognito, KMS, Secrets Manager, EventBridge, CloudWatch, API Gateway v2, and more.
The catch: it's new and playing catch-up on AWS service coverage. LocalStack has years of edge cases handled. If you use an obscure AWS service, Floci might not emulate it yet. And 'no auth token required' means no telemetry, but also no commercial support if things break.
ZaneOps is a self-hosted PaaS (platform-as-a-service) that aims to be the open source Heroku/Railway. Push your code or Docker image, ZaneOps handles deployment, HTTPS, environment variables, and scaling on your own server.
Built in Python with a modern UI, it targets developers who want the convenience of Heroku but on their own $5-20/mo VPS. Zero-downtime deployments, automatic SSL via Let's Encrypt, and a clean dashboard. MIT, fully free. No paid tier.
The catch: this is very early. Small team, and competing against Coolify which does the same thing with a much larger community. The feature set is thinner: no built-in database management, fewer one-click app templates, less documentation. If you want a self-hosted PaaS today, Coolify is the safer bet. ZaneOps is interesting to watch if you prefer its Python stack or UI approach, but it's not production-ready for anything critical.
Swiftwave handles it. Point it at a VPS, push your code, and it builds, deploys, and manages SSL certificates automatically. Think Coolify or Dokku but written in Go with a focus on simplicity over features.
Everything is free under Apache 2.0. No paid tier, no hosted cloud version. You get Git-based deployments, automatic SSL via Let's Encrypt, a web dashboard, and built-in support for Postgres, MySQL, Redis, and MongoDB. The setup is straightforward: single binary, minimal dependencies.
The catch: this is early-stage. The community is small, documentation has gaps, and you're betting on a project that hasn't proven long-term sustainability. Coolify has 10x the community and more features. Swiftwave's advantage is simplicity (fewer moving parts, less config), but that also means fewer escape hatches when you need something custom.
