Heroku deserves more credit than it gets. git push heroku main, buildpacks, the Procfile, config vars, the add-ons marketplace — most of what we now call "platform engineering DX" was invented there, and the twelve-factor app methodology that half the industry builds against came straight out of Heroku's engineering culture. If you're running on Heroku today and it's working, that's not a problem to fix.
But there are legitimate reasons people look elsewhere. Heroku [ended its free tier in late 2022](https://blog.heroku.com/next-chapter), which pushed out hobbyists, students, and every team that used free dynos to prototype. Dyno-based pricing gets expensive as you scale horizontally. And for years the platform's pace of change felt slow relative to newer entrants — that's improved recently, but the ecosystem's center of gravity moved in the meantime.
I run a platform in this space, so read the PandaStack section with that in mind. I've tried to be as fair to the others as I'd want them to be to us.
How I'm judging these
Five things matter when you're replacing Heroku, in roughly this order:
- 1Deploy DX — is it still "push code, get a URL," or did you inherit a DevOps job?
- 2The database story — Heroku Postgres set a high bar. Is the DB managed, backed up, and wired to the app without credential copy-paste?
- 3Pricing model — flat and predictable, or usage-based and variable? Neither is wrong, but you should know which one you're signing up for.
- 4Idle behavior — does a low-traffic app cost money 24/7, sleep, or scale to zero?
- 5Escape hatches — if it runs a plain Dockerfile, you're never locked in.
Render
Render is the closest thing to a spiritual successor to Heroku. The mental model maps almost one-to-one: web services, background workers, cron jobs, managed Postgres and key-value storage, preview environments, all configured through a clean dashboard or an infrastructure-as-code YAML file. It supports both native runtimes and Dockerfiles, and the docs are excellent.
Tradeoffs: free-tier web services spin down after inactivity and cold-start on the next request, and the free database offering is time-limited — check the current terms on [render.com/pricing](https://render.com/pricing). At larger scale you're doing per-service instance math similar to the dyno math you left.
Best for: teams that want Heroku's exact workflow with a modern coat of paint and don't want to learn anything new.
Railway
Railway has the best-looking product in this category and it isn't close. The canvas view — your services, databases, and their connections drawn as a live diagram — is genuinely useful, not just pretty. Deploys are fast, variables can reference other services, and the templates ecosystem covers a lot of ground.
Railway's pricing is usage-based: you pay for the compute and memory you actually consume, metered finely, on top of a subscription floor. There's no perpetual free tier — you get a trial, then you're on a paid plan. Usage-based billing is great for bursty workloads and less great for people who want to know the bill in advance. Details at [railway.com/pricing](https://railway.com/pricing).
Best for: solo developers and small teams who value speed and polish, and are comfortable with a metered bill.
Fly.io
Fly is the most technically interesting option here. Your app runs as Fly Machines — lightweight VMs that start fast, stop when idle, and can be placed in dozens of regions close to your users. If your app benefits from running in São Paulo *and* Frankfurt *and* Sydney, Fly makes that a config file instead of a networking project. The CLI-first workflow (fly launch, fly deploy) is powerful, and everything is ultimately a Dockerfile, so lock-in is minimal.
The tradeoff is operational surface area. Fly gives you more knobs than Heroku ever did, and you'll touch them: Machines, volumes, private networking, regional placement. The database story has historically required more hands-on attention than Heroku Postgres, though Fly has been building out a managed Postgres offering. Read [fly.io/docs](https://fly.io/docs/) before committing — it's a platform that rewards people who read docs.
Best for: latency-sensitive, multi-region apps and teams with some ops comfort.
DigitalOcean App Platform
App Platform is the PaaS layer on top of DigitalOcean's existing cloud, and that's its real pitch: your PaaS apps, managed databases, object storage, and raw droplets live under one account and one bill. Pricing is component-based and predictable — you pick an instance size, you know the monthly cost. There's a free tier for static sites. Buildpacks and Dockerfiles are both supported.
Tradeoffs: the deploy DX is solid but less refined than Render or Railway, and the platform iterates more slowly. If you outgrow App Platform, though, the escape hatch is unusually good — you're already inside a general-purpose cloud. Docs at [docs.digitalocean.com/products/app-platform](https://docs.digitalocean.com/products/app-platform/).
Best for: teams already on DigitalOcean, or anyone who wants PaaS convenience with a general cloud underneath.
Coolify
Coolify is the open-source, self-hosted answer: install it on any VPS and you get a Heroku-ish dashboard — git deploys, databases, SSL, one-click services — on hardware you control. The software is free; your cost is the server (a modest VPS runs a surprising amount) plus your time. There's also a paid cloud version where they run the control plane for you. See [coolify.io](https://coolify.io/).
The honest tradeoff: you are the platform team. Upgrades, backups, disk pressure, security patching, and the 2 a.m. incident are all yours. That's a fine deal for homelabbers and cost-sensitive side projects, and a bad deal the moment downtime costs you real money and you don't have anyone on call.
Best for: developers who want full control and near-zero platform cost, and accept the maintenance burden.
PandaStack
This is us, so here's the pitch and the caveats in equal measure.
PandaStack's model is "push code, it runs" — connect a Git repo, and it builds (any Dockerfile, or auto-detected buildpacks for Node.js, Python, Go, and more), deploys, and goes live with a managed database wired in automatically: attach PostgreSQL, MySQL, MongoDB, or Redis and DATABASE_URL is injected into your app's environment, no credential copying. You get live build and app logs, rollbacks, deployment history, custom domains with automatic SSL, cron jobs, and edge functions from the same dashboard.
Where we differ from most of this list: the free tier is real and permanent — 5 web services, 5 static sites, 1 database, 100 GB bandwidth, and 300 build minutes a month — and paid plans are flat: Pro at $15/mo and Premium at $25/mo, with usage-based compute tiers on top for bigger workloads. Free-tier apps scale to zero when idle (via KEDA) and run sandboxed in gVisor on preemptible nodes, which is how a $0 tier is sustainable — the tradeoff is cold starts, same as Render's free tier.
The honest caveats: we're newer than everyone else on this list, the ecosystem and integrations catalog are still growing, and free-tier databases get a small storage volume suited to development, not heavy production.
Best for: full-stack apps that need a service and a database wired together with minimal ceremony, on flat, predictable pricing.
The short version
- Want Heroku, but current: Render.
- Want the nicest UX and don't mind metered billing: Railway.
- Want multi-region and control: Fly.io.
- Already on DigitalOcean: App Platform.
- Want to own the whole stack: Coolify.
- Want an app plus a database live with the least ceremony, on a flat bill: that's what we built PandaStack for — you can judge it yourself with a repo and a free account at https://pandastack.io.