APIs & Integration

Metarank

stars 2.4Kforks 108

Open source personalization and search ranking engine

Sylius

stars 8.5Kforks 2.2K

Headless Symfony commerce for complex B2B and B2C stores

Bagisto

stars 28.1Kforks 3.3K

Laravel eCommerce with headless API and no transaction fees

Saleor

stars 23.3Kforks 6.1K

Open source headless e-commerce platform with GraphQL API

Apache CouchDB

stars 7Kforks 1.1K

NoSQL database with multi-primary sync and HTTP API

DocuSeal

stars 18.5Kforks 1.9K

Open source document signing and fillable PDF forms

Novu

stars 40Kforks 4.5K

Open source notification infrastructure for product teams

Directus

stars 37.9Kforks 4.9K

Wrap any SQL database with REST and GraphQL APIs and an admin UI

Jina AI

stars 847forks 92

Open source search APIs and MCP tools for RAG and agent workflows

FFmpeg

stars 64.2Kforks 14.3K

Record, convert, and stream audio and video on any platform

Nhost

stars 9.3Kforks 623

Firebase alternative: GraphQL, Postgres auth, and file storage