head to head · open source
Prometheus vs faststream
Prometheus has 66,906 GitHub stars, 10,969 forks, 890 open issues and last shipped yesterday. faststream has 5,391 stars, 418 forks, 100 open issues and last shipped yesterday. Prometheus leads on adoption by 1,141% (66,906 vs 5,391 stars). Prometheus is written in Go under Apache-2.0; faststream is written in Python under Apache-2.0. Prometheus has attracted 16% as many forks as stars, faststream 8%. faststream was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Prometheus | faststream | |
|---|---|---|
| GitHub stars | ★ 67K | ★ 5.4K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Go | Python |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 11K | ⑂ 418 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Prometheus if
- You weight community size — 67K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick faststream if
- You want the faststream feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Python
- You evaluated both and faststream fits your workflow better
About Prometheus
Prometheus Visit prometheus.io for the full documentation, examples and guides. [ ][quay] [ ][hub] Prometheus, a Cloud Native Computing Foundation project, is a systems and service monitoring system. It collects metrics from configured targets at given intervals, evaluates rule expressions, displays the results, and can trigger alerts when specified conditions are observed. The features that distinguish Prometheus from other metrics and monitoring systems are: A multi dimensional data model (time series defined by metric name and set of key/value dimensions) PromQL, a powerful and flexible query language to…
read the full Prometheus overview →
About faststream
FastStream FastStream is an asynchronous Python framework for building event driven applications. If you know FastAPI , you already know FastStream : the same decorators, type driven validation, dependency injection and generated documentation — pointed at Kafka, RabbitMQ, NATS, Redis and MQTT instead of HTTP. It takes the boilerplate off your hands and leaves your broker intact. \ \ \ Features FastStream simplifies the process of writing producers and consumers for message queues, handling all the parsing, lifecycle and documentation generation automatically. Making streaming microservices has never been…
read the full faststream overview →
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Frequently asked questions
Is Prometheus or faststream more popular?
Prometheus has 66,906 GitHub stars and faststream has 5,391. Prometheus has the larger community by that measure.
Are Prometheus and faststream free?
Both are open source. Prometheus is licensed under Apache-2.0 and faststream under Apache-2.0. Neither carries a licence fee.
What is the difference between Prometheus and faststream?
Prometheus is written in Go and faststream in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Prometheus or faststream?
Choose Prometheus if you want the larger community (66,906 stars) or its Apache-2.0 licence terms. Choose faststream if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.