Open source microservices projects
Every project in the registry tagged microservices, ranked by real GitHub adoption.
Universal API management for REST, GraphQL, gRPC & async
Test Automation Made Simple
.NET API Gateway
The Modern Application Platform.
Design-first Go framework that generates API code, documentation, and clients. Define once in an elegant DSL, deploy as HTTP and gRPC services with zero drift b
The Cloud-Native API Gateway and AI Gateway
An API Gateway built on Spring Framework and Spring Boot providing routing and more.
Blazing-fast API gateway with linear scalability
Build AI (or any) apps with scalable microservices & microfrontends.
YAS: Yet Another Shop, a sample microservices project in Java
Low-code and no-code platform for business apps
Related tags
Frequently asked questions
How many open source microservices projects are there?
This registry tracks 11 projects tagged microservices, with 60,488 GitHub stars between them. The most-adopted is Tyk at 10,822 stars.
Are these microservices projects free to use?
Yes — 9 of the 11 carry an explicit open-source licence across 3 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which microservices project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these microservices projects still maintained?
9 of the 11 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.