Apache OpenWhisk vs Fn Project

Apache OpenWhisk8.8Visit Fn Project8.1Visit

Higher score Apache OpenWhisk #3 in Serverless Development Frameworks 8.8/10 Open source ✓ 0 of 4 features Try Apache OpenWhisk

vs

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

• Apache OpenWhisk fits best

  Teams building portable event-driven functions

• Fn Project fits best

  Teams running containerized functions across environments

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Side by side

Feature	Apache OpenWhisk 8.8/10 Visit ↗	Fn Project 8.1/10 Visit ↗
At a glance
Editor score	8.8	8.1
Ranking	#3 in Serverless Development Frameworks	#8 in Serverless Development Frameworks
Best for	Teams building portable event-driven functions	Teams running containerized functions across environments
Pricing model	Free	Free
Starting price	Open source	Open source
Free plan	Not checked yet	Not checked yet
Free trial	—	—
Deployment	Desktop, Self-hosted	Desktop, Self-hosted
Platforms	Linux, macOS, Windows	Linux, macOS, Windows
Integrations	7 integrations	3 integrations
Features Apache OpenWhisk 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	Supports triggers, rules, feeds, sequences, and synchronous or asynchronous actions Offers multiple language runtimes plus custom Docker runtimes Deploys locally or on Kubernetes and includes REST API access	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	Requires a self-managed deployment rather than a vendor-hosted paid service Management and deployment workflows center on the CLI and YAML manifests The published product details give limited development and deployment workflow guidance	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	Apache OpenWhisk is an open-source, distributed serverless platform for running functions in response to events or HTTP requests. Its model combines actions with triggers, rules, feeds, packages, and sequences, making it a fit for teams… 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

• Apache OpenWhisk — where it wins

  • Supports triggers, rules, feeds, sequences, and synchronous or asynchronous actions
  • Offers multiple language runtimes plus custom Docker runtimes
  • Deploys locally or on Kubernetes and includes REST API access

  Where it doesn't

  • Requires a self-managed deployment rather than a vendor-hosted paid service
  • Management and deployment workflows center on the CLI and YAML manifests
  • The published product details give limited development and deployment workflow guidance

• 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

• Apache OpenWhisk8.8/10 · Open source

  A portable, self-managed framework for event-driven functions, with Kubernetes and Docker support.

  Try Apache OpenWhiskFull 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 →