- [Kong](https://konghq.com/kong/) - The World’s Most Popular Open Source Microservice API Gateway and Platform. ([Source Code](https://github.com/Kong/kong)) `Apache-2.0``Lua`
- [KrakenD](https://www.krakend.io/) - Open source High-Performance API Gateway. ([Source Code](https://github.com/devopsfaith/krakend)) `Apache-2.0``Go`
- [Para](http://www.paraio.org) - Flexible and modular backend framework/server for object persistence, API development and authentication. ([Source Code](https://github.com/erudika/para)) `Apache-2.0``Java`
- [Pizzly](https://github.com/bearer/pizzly) - Open-source API Integrations Manager that provides everything a developer needs to interact with OAuth based APIs. `MIT``Nodejs`
- [Tyk](https://tyk.io) - Fast and scalable open source API Gateway. Out of the box, Tyk offers an API Management Platform with an API Gateway, API Analytics, Developer Portal and API Management Dashboard. ([Source Code](https://github.com/TykTechnologies/tyk)) `MPL-2.0``Go`