Open source asyncapi projects

Every project in the registry tagged asyncapi, ranked by real GitHub adoption.

projects 3 combined stars ★ 9.1K refresh nightly
01 faststream ★ 5.3K

Asynchronous Python framework for event-driven services. A thin client for Kafka, RabbitMQ, NATS, Redis and MQTT with full access to native broker features, plu

last push7 hours ago languagePython licenseApache-2.0
02 microcks ★ 2.0K

The open source, cloud native tool for API Mocking and Testing. Microcks is a Cloud Native Computing Foundation incubating project 🚀

last push17 hours ago languageJava licenseApache-2.0
03 standard-webhooks ★ 1.7K

The Standard Webhooks specification

last push16 hours ago languageJava licenseApache-2.0

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Frequently asked questions

How many open source asyncapi projects are there?

This registry tracks 3 projects tagged asyncapi, with 9,135 GitHub stars between them. The most-adopted is faststream at 5,343 stars.

Are these asyncapi projects free to use?

Yes — 3 of the 3 carry an explicit open-source licence across 1 distinct licence, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.

Which asyncapi 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 asyncapi projects still maintained?

3 of the 3 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.