Fast and Simple Serverless Functions for Kubernetes
Functions from source in several languages on Kubernetes, triggered by HTTP, timers and queues.
- Language
- Go
- Licence
- Apache-2.0
- Stars
- 8.9k
- Latest
- v1.27.0
- Last push
- 2026-10-06
alternatives to
AWS Lambda
AWS service that runs functions on demand in response to events and bills per request and compute time. A closed product from Amazon Web Services.
Side by side
| Tool | Fit | Stars | Licence | Terms | Self-hosted | Language | Latest | Last push |
|---|---|---|---|---|---|---|---|---|
| Fission | Full replacement | 8.9k | Apache-2.0 | Open source | Yes | Go | v1.27.0 | 2026-10-06 |
| Apache OpenWhisk | Full replacement | 6.8k | Apache-2.0 | Open source | Yes | Scala | 2.0.0 | 2026-09-08 |
| Nuclio | Full replacement | 5.8k | Apache-2.0 | Open source | Yes | Go | 1.17.9 | 2026-10-06 |
| OpenFaaS | Partial | 26k | Other | Source available | Yes | Go | 0.27.13 | 2026-07-02 |
| Knative Serving | Partial | 6.1k | Apache-2.0 | Open source | Yes | Go | knative-v1.23.0 | 2026-09-21 |
Every alternative
5 alternatives
Apache OpenWhisk is an open source serverless cloud platform
Event-driven functions in many languages, with triggers, rules and sequences.
- Language
- Scala
- Licence
- Apache-2.0
- Stars
- 6.8k
- Latest
- 2.0.0
- Last push
- 2026-09-08
High-Performance Serverless event and data processing platform
Functions triggered by HTTP, queues and streams, built for data and ML workloads.
- Language
- Go
- Licence
- Apache-2.0
- Stars
- 5.8k
- Latest
- 1.17.9
- Last push
- 2026-10-06
OpenFaaS - Serverless Functions Made Simple
Functions packaged as containers on Kubernetes, scaled on requests, with event connectors in paid editions.
Kubernetes-based, scale-to-zero, request-driven compute
Request-driven containers with scale to zero and revisions on Kubernetes, rather than function code.
- Language
- Go
- Licence
- Apache-2.0
- Stars
- 6.1k
- Latest
- knative-v1.23.0
- Last push
- 2026-09-21
Head to head
About AWS Lambda
- Vendor
- Amazon Web Services