CapRover - Build your own PaaS in a few minutes. (Demo, Source Code) Apache-2.0Docker/Nodejs
Coolify - An open-source & self-hostable Heroku / Netlify alternative (and even more). (Source Code) Apache-2.0Docker
Dokku - An open-source PaaS (alternative to Heroku). (Source Code) MITDocker/Shell/Go/deb
fx - A tool to help you do Function as a Service with painless on your own servers. MITGo
Kubero - A self-hosted Heroku PaaS alternative for Kubernetes that implements GitOps. (Demo, Source Code) GPL-3.0K8S/Nodejs/Go
LocalStack - LocalStack is a fully functional local AWS cloud stack. This includes Lambda for serverless computation. (Source Code) Apache-2.0Python/Docker/K8S
Nhost - Firebase Alternative with GraphQL. Get a database and backend configured and ready in minutes. (Source Code) MITDocker/Nodejs/Go
OpenFaaS - Serverless Functions Made Simple for Docker & Kubernetes. (Source Code) MITGo
Tau - Easily build Cloud Computing Platforms with features like Serverless WebAssembly Functions, Frontend Hosting, CI/CD, Object Storage, K/V Database, and Pub-Sub Messaging. (Source Code) BSD-3-ClauseGo/Rust/Docker