Open Source APIs & Integration Tools

Warrant

stars 1.3Kforks 53

Run fine-grained authorization with RBAC, ABAC, and ReBAC

Oso Cloud

stars 3.5Kforks 192

Open source authorization with RBAC, ABAC, and ReBAC for any app

MuPDF

stars 3Kforks 499

Fast open source library for rendering and editing PDFs

Apache APISIX

stars 17.2Kforks 3K

Cloud-native API gateway with dynamic routing and plugins

Lago

stars 10.7Kforks 770

Usage-based billing API for metered and hybrid SaaS pricing

Matrix

stars 4.7Kforks 640

Open protocol for secure, decentralized messaging and VoIP

Centrifugo

stars 10.9Kforks 743

Scalable real-time messaging server with WebSocket support

LiveKit

stars 14.8Kforks 4K

Real-time voice and video infrastructure on open source WebRTC

Redis

stars 76.9Kforks 24.9K

High-performance open source in-memory data structure store

Ghostscript

stars 293forks 92

Open source PDF and PostScript interpreter and converter

Typesense

stars 27Kforks 1K

Fast typo-tolerant search engine with instant results