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OpenFaaS

A serverless computing platform designed for Kubernetes

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Vendor
OpenFaaS Ltd
Also known as
openfaas

Available worldwide

What is OpenFaaS?

Open-source serverless framework that abstracts cloud provider differences, allowing you to deploy and run functions across multiple clouds, on-premises, and Kubernetes with extended execution timeouts and support for many programming languages.

Independently observed

OpenFaaS pricing

Plans, per-tier features and add-ons, dated and linked to live pricing. Pricing changes often; always verify at source before you rely on it.

Pricing as of verify at live pricing ↗Independently observed
from $1250/moHybridFree tier14-day trial

Community Edition free; Standard from $1,250/month with 14-day trial; Enterprise custom pricing

Community Edition

Free
Free

Limited version for personal-use, hobbyists and experimentation. 60-day limit on commercial use.

functions
15
namespaces
1
repositories
public only
  • 15 functions
  • 1 namespace
  • Public repositories only
  • Basic autoscaling up to 5/5 replicas
  • Basic metrics & observability
  • Cron trigger (limited functionality)
  • Legacy UI portal
  • REST API

OpenFaaS Standard

$1,250/month
annual

Production-ready functions for a single team or tenant. Scalable and event-driven automation for a business.

functions
500
namespaces
1
  • 500 functions
  • 1 namespace
  • Private registries for functions
  • Fine-tuned autoscaling for RPS, Capacity & CPU
  • Scale to Zero
  • Event triggers: Kafka, RabbitMQ, GCP Pub/Sub, PostgreSQL, AWS SNS/SQS
  • Queue-worker (JetStream-based)
  • Retry failed messages
  • New UI dashboard
  • Grafana dashboards for monitoring
  • Manage functions with Custom Resource (CRD)
  • Air-gapped / offline usage
  • Istio/Linkerd compatibility
  • Self-service email support

OpenFaaS for Enterprises

Contact sales
Contact sales

Highest level of service for enterprises and multi-tenant hosting. Upgraded support, compliance & multi-tenancy features.

functions
5000 per namespace
namespaces
unlimited
  • 5000 functions per namespace
  • Unlimited namespaces
  • Multi-tenancy with secure isolation (gVisor)
  • Function Builder API (REST)
  • Dedicated async queues (JetStream)
  • Single Sign-On (SSO) with OpenID Connect
  • Role Based Access Control (RBAC)
  • Web Identity Federation for CI/CD
  • Auditing via webhook
  • Business day support with SLA
  • Direct to Engineering Support (Slack)
  • Annual architecture review
  • Security advisories to nominated email
  • Developer licenses included

Add-ons

  • Enterprise Support

What OpenFaaS does

The capabilities that matter for serverless & edge platforms, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.

Core
Execution substrate
-
Language / runtime breadth
extensive language support
Reach
Runs at global edge PoPs
-
Scale
Scale to zero
-
Performance
Cold-start profile
-
Limits
Max execution duration
extended execution timeouts
Integration
Event source breadth
-
HTTP endpoint trigger
-
Cron / scheduled invocations
-
State
Durable state / workflow primitive
-
Flexibility
Bring-your-own runtime / container
✓
Deployment
Hosting
Cloud + self-hosted
Ops
Built-in logs / metrics / tracing
-
Extensibility
CLI + IaC / framework support
-
Independently observed

Platform & deployment

Independently observed
Platforms
  • CLI
  • Linux
Deployment
  • Cloud / SaaS
  • Self-hosted

Integrations (20)

Independently observed
  • Apache Kafka
  • AWS SQS
  • AWS SNS
  • GCP Pub/Sub
  • RabbitMQ
  • PostgreSQL
  • MQTT
  • Cron
  • Grafana
  • Istio
  • Linkerd
  • NATS JetStream
  • GitHub
  • Slack
  • Salesforce
  • Zoom
  • Google Docs
  • Gmail
  • DigitalOcean
  • Crunchbase

Security & compliance

Known vulnerabilities: 0 (0 in the last 12 months) sourcea count reflects scale & disclosure, not quality

OpenFaaS FAQ

Common questions about OpenFaaS, answered from independent, dated evidence.

What is OpenFaaS?

Open-source serverless framework that abstracts cloud provider differences, allowing you to deploy and run functions across multiple clouds, on-premises, and Kubernetes with extended execution timeouts and support for many programming languages. It is indexed under Serverless & Edge Platforms.

Source: https://www.openfaas.com/

Is OpenFaaS free?

OpenFaaS offers a free tier, so you can start without paying. Paid plans start at $1250 per month. Prices are published openly on the vendor's own pricing page. Pricing changes often, so verify at source before relying on it.

Source: https://www.openfaas.com/pricing/

What platforms does OpenFaaS support?

OpenFaaS supports Linux and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.

Source: https://www.openfaas.com/pricing/

Can OpenFaaS be self-hosted?

Yes. OpenFaaS can be deployed cloud / SaaS, on-premise and self-hosted, so it does not have to run on the vendor's infrastructure.

Source: https://www.openfaas.com/

What does OpenFaaS integrate with?

We have confirmed 20 integrations for OpenFaaS, including Apache Kafka, AWS SQS, AWS SNS, GCP Pub/Sub, RabbitMQ, PostgreSQL, MQTT and Cron, plus 12 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.

Source: https://www.openfaas.com/pricing/

Where is OpenFaaS available?

OpenFaaS is available worldwide. The vendor is headquartered in the United Kingdom.

Source: https://www.openfaas.com/

OpenFaaS alternatives

Other serverless & edge platforms we track, ranked by the same independent score.

All OpenFaaS alternatives, ranked →

Compare OpenFaaS

Side by side against other serverless & edge platforms, attribute by attribute, with a source on every value.

Independent · unbought · dated

The vioscaleAI score: one lens on the evidence

Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for OpenFaaS, not the verdict.

Balanced composite 33 / 100
medium · 54%
Signal contributions to the composite score
SignalScoreWeightContributionEvidence
Integrations380.072.8✓
Stars830.032.2✓
Capabilities290.061.8✓
Dependent projects290.061.8✓
Security score430.041.8✓
Release cadence240.051.3✓
Development activity00.090.0✓
Security posture00.120.0-
Package downloads00.140.0-
Developer Q&A activity00.060.0-

Computed . Re-weight it by intent, or see the full method.

All data & sourcesshow ↓

Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.

Activity

AttributeValueEvidence
Commits last 30d0mediumsource · 2026-09-11 · 65%

Adoption

AttributeValueEvidence
Github stars26,236highsource · 2026-09-11 · 90%
Dependent repos55highsource · 2026-09-11 · 85%

Content

AttributeValueEvidence
Faq6 itemsmediumsource · 2026-09-10 · 63%

Features

AttributeValueEvidence
CapabilitiesHosting: both · Languages: extensive language support · Max duration: extended execution timeouts · Custom runtime: Yesmediumsource · 2026-09-14 · 60%

Integrations

AttributeValueEvidence
Count20mediumsource · 2026-08-13 · 60%

Language

AttributeValueEvidence
PrimaryGohighsource · 2026-09-11 · 90%

Market

AttributeValueEvidence
AvailabilityHqCountry: GB · PrimaryMarkets: … · AvailabilityScope: global · AvailableCountries: … · NotAvailableCountries: …highsource · 2026-08-14 · 75%

Pricing

AttributeValueEvidence
Free tierYesmediumsource · 2026-09-14 · 60%
Modelopen_sourcemediumsource · 2026-09-14 · 60%
Price levelfreemediumsource · 2026-09-14 · 60%
TransparentYesmediumsource · 2026-08-13 · 60%

Release

AttributeValueEvidence
Cadence days136mediumsource · 2026-09-11 · 70%
History5 itemsmediumsource · 2026-09-11 · 70%

Security

AttributeValueEvidence
Scorecard4.3highsource · 2026-09-11 · 90%
VulnerabilitiesCount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Fopenfaas%2Ffaas&per_page=100 · Last 12m: 0highsource · 2026-09-11 · 90%
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