OpenFaaS
OpenFaaS: A self-hosted function platform with broad deployment options and a high Standard entry price. Ranked #30 of 32 in Serverless Hosting by our editors (6.5/10); pricing: Free plan · 14-day trial; best for teams self-hosting functions across Kubernetes environments.
At a glance
- Editor score6.5 / 10
- PricingFree plan · 14-day trial
- Best forTeams self-hosting functions across Kubernetes environments
- Free planYes
- Paid from$1,250/mo
- Execution modelFlat_rate
- Founded2019 · Peterborough, UK
- Facts checked19 Sep 2026
Where it wins
- Deploy to Kubernetes, K3s, OpenShift, or a single host with faasd
- Connect event-driven functions to Kafka, RabbitMQ, cloud queues, and more
- Use CLI or REST API deployment, autoscaling, metrics, and Grafana dashboards
Where it doesn't
- Community Edition is limited to 15 functions and one namespace
- Community Edition supports public function repositories only
- Standard starts at $1,250 per month
Our verdict on OpenFaaS
OpenFaaS is a self-hosted serverless platform for teams deploying event-driven functions and microservices on Kubernetes, K3s, OpenShift, or a single host with faasd. Workloads are packaged as OCI container images, with CLI and REST API deployment, synchronous and asynchronous invocation, and templates for languages including Go, Python, Node.js, Java, C#, Ruby, and PHP. It suits organizations that want to operate their own function platform across cloud, on-premises, or air-gapped environments rather than use a vendor-operated execution service.
Its deployment and event ecosystem is a central strength. Functions can connect to Kafka, RabbitMQ, AWS SNS/SQS, GCP Pub/Sub, PostgreSQL, Cron, and MQTT; Istio and Linkerd are also listed integrations. Autoscaling, metrics, observability, Grafana dashboards, custom domains with ingress and TLS, and configurable timeouts round out the platform. The range of deployment targets and container support gives teams flexibility, but also means OpenFaaS is a fit for those prepared to manage a self-hosted environment. Teams seeking a managed execution service should look elsewhere.
Pricing divides the entry-level option from the paid feature set. Community Edition costs $0 and includes 15 functions, one namespace, public repositories, a REST API, basic autoscaling, and basic metrics and observability. OpenFaaS Standard is $1,250 per month, with 500 functions, private registries, fine-tuned autoscaling, scale to zero, and event connectors; a 14-day trial is subject to approval. The Enterprise plan lists multi-tenant hosting, multiple namespaces, upgraded support and compliance features, OpenID Connect SSO, RBAC, and secure function isolation. Choose OpenFaaS when control over deployment and a broad connector set matter; its Standard price may not suit teams prioritizing a lower-cost hosted option.
Your product? Our editors can test OpenFaaS in depth and publish a review, labelled as paid · from $149/mo →
OpenFaaS pricing
All 3 OpenFaaS plans and prices →
OpenFaaS fact sheet
| Free plan | Yes |
|---|---|
| Paid from | $1,250/mo |
| Execution model | Flat_rate |
| Max execution time | Not verified |
| Deployment methods | Cli |
| Runtime languages | Go, Python, Node.js, Java, C#, Ruby, PHP, Dockerfile, and custom containerized runtimes |
| Custom domains | Yes |
| Preview deployments | Not verified |
| Free trial | 14 days |
| Deployment | Cloud, Desktop, Self-hosted |
| Platforms | Web, Linux |
| Integrations | 11 integrations: Apache Kafka, AWS SQS, AWS SNS, GCP Pub/Sub, RabbitMQ, PostgreSQL … |
| Pricing | Free plan · 14-day trial (source) |
| Website | openfaas.com |
| Facts checked | 19 Sep 2026 |
OpenFaaS integrations
OpenFaaS lists 11 integrations on its own site.
- Apache Kafka
- AWS SQS
- AWS SNS
- GCP Pub/Sub
- RabbitMQ
- PostgreSQL
- Cron
- MQTT
- Istio
- Linkerd
- Grafana
Alternatives to OpenFaaS
- AWS LambdaA mature, broad serverless compute service with usage-based pricing and AWS integrations.9.4
- Google Cloud RunDeploy containers or source code, with automatic scaling that can reach zero.9.3
- Azure FunctionsA flexible Azure runtime for scheduled and event-driven functions, with several hosting models.9.2
See all OpenFaaS alternatives →
Also Ranked In
OpenFaaS is ranked in 5 of our directories.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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