Open alternatives9
Open-source apps that replace Heroku, Fly and more

Coolify is a platform that lets you deploy apps, databases and services on your own servers, managed through a web dashboard. It is for people who want the convenience of a cloud hosting service while keeping control of their own infrastructure.
Dokku is a self-hosted tool that lets developers deploy web apps to their own server, similar to Heroku, using Docker. It is aimed at programmers and sysadmins who want to run their own app hosting.

CapRover is a program you install on your own server to publish web apps and databases without writing server setup by hand. It is aimed at developers who want to host their own projects and cut hosting costs.

Kubero is a free tool that lets people put their web apps online on their own Kubernetes cluster, using a web interface instead of writing configuration by hand. It is for developers who want a Heroku-style way to deploy apps without running the platform on someone else's servers.
Otomi, now called App Platform and maintained by Akamai, is a self-hosted platform that runs on a Kubernetes cluster and lets teams build apps from source code, deploy them and put them online. It is for developer teams and platform administrators who run their own Kubernetes infrastructure.
Peon is a self-hosted platform for deploying web apps, Docker stacks, databases and static sites from Git to servers you control. It is for developers and small teams who want a Heroku-style service on their own infrastructure.
Nua is a self-hosted platform for building, deploying and managing web applications on your own server from the command line. It is aimed at small businesses, associations and public services, and is still early-stage software not yet meant for production.
Hop3 is an open-source platform for deploying and running web apps on your own servers, including apps from a ready-made catalog. It is aimed at small businesses, non-profits and individual developers, but is still in early development and not yet recommended for unattended production use.
dyrector.io is a self-hosted platform that helps teams deliver and deploy their containerized applications, with version management built in. It is aimed at engineers, DevOps teams and individual developers who want to spend less time setting up their container infrastructure.
What's missing
What people still miss here, and wish existed. Upvote what matters to you.
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About this page
Replaces fully means it does the main job of these apps; Replaces partly means it covers some of it.
Licenses: every project here uses an open-source license (what each one means). Open core means some parts are paid or under another license.
GitHub stars are shown for reference. They measure popularity, not whether it replaces anything.
Verified means r/TrueOpenSource mods checked it: open-source license, maintained, and it really does the job.
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