Backend Development

Soketi

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Self-hosted Pusher-compatible WebSocket server, open source

Cerbos

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Move access control out of app code into testable YAML policies

Appwrite

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Self-hosted backend: auth, databases, storage, and functions

MariaDB Server

stars 7.7Kforks 2.1K

Open source MySQL-compatible relational database server

PostgreSQL

stars 21.4Kforks 5.8K

World's most advanced open source relational database

Sylius

stars 8.5Kforks 2.2K

Headless Symfony commerce for complex B2B and B2C stores

Saleor

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Open source headless e-commerce platform with GraphQL API

Apache CouchDB

stars 6.9Kforks 1.1K

NoSQL database with multi-primary sync and HTTP API

OrientDB

stars 5Kforks 874

Multi-model NoSQL database: graphs, docs, and key-value

Temporal

stars 20.9Kforks 1.7K

Durable workflow orchestration for reliable, long-running apps

KeyDB

stars 12.5Kforks 662

Faster, multithreaded Redis drop-in with no API changes required