Fission
Open Source Kubernetes-native Serverless Framework
- Also known as
- fission
What is Fission?
Fission is a framework for serverless functions on Kubernetes. Write short-lived functions in any language and map them to HTTP requests or other event triggers. Deploy instantly without building containers or managing registries.
Fission pricing
We don't have Fission's full plan breakdown yet (its pricing page resisted automated reading). Here's what we could confirm. Always check live pricing for exact numbers.
Free and open source under Apache License
What Fission 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.
- Execution substrate
- Container
- Language / runtime breadth
- Python, NodeJS, Go, Rust, C#, PHP, and extensible to any language
- Runs at global edge PoPs
- ✗
- Scale to zero
- ✗
- Cold-start profile
- Low
- Max execution duration
- -
- Event source breadth
- HTTP endpoints, webhooks, Kubernetes watch events
- HTTP endpoint trigger
- ✓
- Cron / scheduled invocations
- ✗
- Durable state / workflow primitive
- ✗
- Bring-your-own runtime / container
- ✓
- Hosting
- Self-hosted only
- Built-in logs / metrics / tracing
- ✓
- CLI + IaC / framework support
- ✓
Platform & deployment
Independently observed- CLI
- Self-hosted
Integrations (3)
Independently observed- Fluentd
- Prometheus
- Istio
Fission alternatives
Other serverless & edge platforms we track, ranked by the same independent score.
- Vercel FunctionsRun server-side code without managing serverslow · 49%
- Deno DeployOne simple platform for all your JavaScript and TypeScript applicationslow · 45%
- Cloudflare WorkersDeploy serverless functions globally in secondslow · 30%
- Serverless FrameworkDeploy APIs, scheduled tasks, workflows and event-driven apps to AWS Lambda easilymedium · 50%
- Vercel Edge Runtimemedium · 55%
- Fastly Computelow · 37%
The Vioscale 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 Fission, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Github Activity | 56 | 18.00 | 1015.7 | ✓ |
| Release Cadence | 95 | 10.00 | 950.0 | ✓ |
| Capabilities | 67 | 12.00 | 805.4 | ✓ |
| Github Stars | 75 | 5.00 | 372.5 | ✓ |
| Integrations | 17 | 16.00 | 277.0 | ✓ |
| Security Posture | 0 | 22.00 | 0.0 | - |
| Package Downloads | 0 | 26.00 | 0.0 | - |
| Stackoverflow Activity | 0 | 12.00 | 0.0 | - |
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
| Attribute | Value | Evidence |
|---|---|---|
| Commits last 30d | 61 | mediumsource · 2026-08-03 · 65% |
Adoption
| Attribute | Value | Evidence |
|---|---|---|
| Github stars | 8,889 | highsource · 2026-08-03 · 90% |
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | {"hosting":"self","triggers":"HTTP endpoints, webhooks, Kubernetes watch events","languages":"Python, NodeJS, Go, Rust, C#, PHP, and extensible to any language","cold_start":"low","cli_and_iac":true,"http_trigger":true,"durable_state":false,"scale_to_zero":false,"custom_runtime":true,"scheduled_cron":false,"edge_distributed":false,"runtime_substrate":"container","observability_builtin":true} | mediumsource · 2026-08-03 · 60% |
Integrations
| Attribute | Value | Evidence |
|---|---|---|
| Count | 3 | mediumsource · 2026-08-03 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | Go | highsource · 2026-08-03 · 90% |
License
| Attribute | Value | Evidence |
|---|---|---|
| Spdx | Apache-2.0 | highsource · 2026-08-03 · 95% |
Pricing
Release
| Attribute | Value | Evidence |
|---|---|---|
| Cadence days | 9 | mediumsource · 2026-08-03 · 70% |