Fission vs Fn Project

Fission8.2Visit Fn Project8.1Visit

Higher score Fission #7 in Serverless Development Frameworks 8.2/10 Open source ✓ 0 of 4 features Visit Fission

vs

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

• Fission fits best

  Kubernetes teams needing scalable event-triggered functions

• Fn Project fits best

  Teams running containerized functions across environments

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Side by side

Feature	Fission 8.2/10 Visit ↗	Fn Project 8.1/10 Visit ↗
At a glance
Editor score	8.2	8.1
Ranking	#7 in Serverless Development Frameworks	#8 in Serverless Development Frameworks
Best for	Kubernetes teams needing scalable event-triggered 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 Fission 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 HTTP, timer, queue, and Kubernetes event triggers. Automatically provisions and scales function pods. Offers streaming responses and Prometheus and Fluentd integration.	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 teams to operate the Kubernetes infrastructure themselves. Deployment is CLI-based rather than through a hosted service. Functions use a request-based execution model.	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	Fission brings serverless-style functions to Kubernetes clusters that teams operate themselves. Developers can write short-lived functions, package them in language-specific runtime environments, and expose them through HTTP or event… 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

• Fission — where it wins

  • Supports HTTP, timer, queue, and Kubernetes event triggers.
  • Automatically provisions and scales function pods.
  • Offers streaming responses and Prometheus and Fluentd integration.

  Where it doesn't

  • Requires teams to operate the Kubernetes infrastructure themselves.
  • Deployment is CLI-based rather than through a hosted service.
  • Functions use a request-based execution model.

• 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

• Fission8.2/10 · Open source

  A self-hosted way to run event-triggered functions on Kubernetes, with automatic scaling.

  Visit FissionFull 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 →