OpenFaaS vs Fn Project

OpenFaaS8.4Visit Fn Project8.1Visit

Higher score OpenFaaS #6 in Serverless Development Frameworks 8.4/10 Free plan · 14-day trial Free planFree trial✓ 0 of 4 features Visit OpenFaaS

vs

Fn Project #8 in Serverless Development Frameworks 8.1/10 Open source ✓ 0 of 4 features Visit Fn Project

• OpenFaaS fits best

  Teams deploying containerized functions on Kubernetes

• Fn Project fits best

  Teams running containerized functions across environments

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Side by side

Feature	OpenFaaS 8.4/10 Visit ↗	Fn Project 8.1/10 Visit ↗
At a glance
Editor score	8.4	8.1
Ranking	#6 in Serverless Development Frameworks	#8 in Serverless Development Frameworks
Best for	Teams deploying containerized functions on Kubernetes	Teams running containerized functions across environments
Pricing model	Free plan + paid	Free
Starting price	$1,250/mo	Open source
Free plan	✓ (best)	Not checked yet
Free trial	14 days	—
Deployment	Cloud, Desktop, Self-hosted	Desktop, Self-hosted
Platforms	Web, Linux	Linux, macOS, Windows
Integrations	11 integrations	3 integrations
Features OpenFaaS 0/4 · Fn Project 0/4
Local testing	Not checked yet	Not checked yet
Application packaging	Not checked yet	Not checked yet
Kubernetes support	Not checked yet	Not checked yet
Deployment rollback	Not checked yet	Not checked yet
Specs
Deployment targets	Not checked yet	Not checked yet
Supported languages	Not checked yet	Not checked yet
Deployment model	Not checked yet	Not checked yet
Our review
Pros	Deploy to Kubernetes, K3s, OpenShift, or a single host with faasd Supports event connectors including Kafka, RabbitMQ, and PostgreSQL Offers language templates plus custom container images and runtimes	Deploy to public, private, hybrid, or on-premises infrastructure Group multiple functions and triggers into applications Use custom Docker images and deploy to Kubernetes with an official Helm chart
Cons	Community Edition limits deployments to 15 functions and one namespace Private function registries and scale-to-zero require a paid plan Standard starts at $1,250 per month	Fn Project is self-hosted rather than a vendor-hosted service Its local development guidance is less detailed than some alternatives Operational workflow details are less extensive than some alternatives
Our verdict	OpenFaaS is a self-hosted serverless platform for teams deploying event-driven functions and microservices as OCI container images. It targets Kubernetes, K3s, OpenShift, and single-host deployments with faasd, and is designed for cloud,… Read the review →	Fn Project is an open-source, event-driven Functions-as-a-Service platform for teams that want to run functions on infrastructure they manage. It packages functions as native Docker containers and supports public, private, hybrid, and… Read the review →

Strengths and trade-offs

• OpenFaaS — where it wins

  • Deploy to Kubernetes, K3s, OpenShift, or a single host with faasd
  • Supports event connectors including Kafka, RabbitMQ, and PostgreSQL
  • Offers language templates plus custom container images and runtimes

  Where it doesn't

  • Community Edition limits deployments to 15 functions and one namespace
  • Private function registries and scale-to-zero require a paid plan
  • Standard starts at $1,250 per month

• Fn Project — where it wins

  • Deploy to public, private, hybrid, or on-premises infrastructure
  • Group multiple functions and triggers into applications
  • Use custom Docker images and deploy to Kubernetes with an official Helm chart

  Where it doesn't

  • Fn Project is self-hosted rather than a vendor-hosted service
  • Its local development guidance is less detailed than some alternatives
  • Operational workflow details are less extensive than some alternatives

• OpenFaaS8.4/10 · Free plan · 14-day trial

  A self-hosted, container-based serverless platform with broad Kubernetes targets and paid scale-to-zero.

  Visit OpenFaaSFull verdict →
• Fn Project8.1/10 · Open source

  A self-hosted, container-native Functions-as-a-Service platform for deployment across environments.

  Visit Fn ProjectFull verdict →