| Price from | — | $1,250/mo |
| Free plan | — | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | — | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 0 | 3 |
| Spec score · Serverless Platforms | 7.7 (#12) | 8.2 (#6) |
| CLI platforms | The installation guide provides CLI installation instructions for macOS, Linux, and Windows. | The faas-cli installation page gives installation options for Linux, macOS, and Windows. |
| Languages | The documentation lists Node.js, Python, Go, Ruby, PHP, Bash, and custom container images as supported runtimes. | Official templates are available for Node.js, Python, Go, Java, C#, Ruby, and PHP. |
| Support | The project directs users to its Slack community and provides troubleshooting guides and a CLI command for collecting support diagnostics. | Standard includes self-service email support; Enterprise support is a separate agreement with business-day SLA support and direct engineering support via Slack. |
| What it does | Fission is an open-source framework for running serverless functions on Kubernetes and mapping them to HTTP requests or other event triggers. | OpenFaaS deploys serverless functions and microservices to Kubernetes. |
