# Cloudflare Workers vs Fission

| Attribute | Cloudflare Workers | Fission |
|---|---|---|
| **vioscaleAI score** | 63.1 (14% (low)) | 53.5 (54% (medium)) |
| activity.commits_last_30d | - | 60 |
| adoption.dependent_repos | - | 3 |
| adoption.github_stars | - | 8,933 |
| content.faq | `[{"answer":"Cloudflare Workers is a server runtime that allows you to run JavaScript and WebAssembly code in response to HTTP requests, either through Cloudflare's cloud platform or by self-hosting the runtime. It is indexed under Serverless & Edge Platforms.","source":"https://workers.cloudflare.com/","question":"What is Cloudflare Workers?","confidence":0.6},{"answer":"Cloudflare Workers offers a free tier, so you can start without paying. Paid plans start at $20 per year. Prices are published openly on the vendor's own pricing page. Pricing changes often, so verify at source before relying on it.","source":"https://www.cloudflare.com/plans","question":"Is Cloudflare Workers free?","confidence":0.6},{"answer":"Cloudflare Workers supports the web and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://www.cloudflare.com/plans","question":"What platforms does Cloudflare Workers support?","confidence":0.6},{"answer":"Yes. Cloudflare Workers can be deployed cloud / SaaS and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://workers.cloudflare.com/","question":"Can Cloudflare Workers be self-hosted?","confidence":0.6},{"answer":"We have independently confirmed SOC 2, ISO 27001 and GDPR for Cloudflare Workers. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Cloudflare Workers not holding them. Always confirm compliance directly before you rely on it.","source":"https://workers.cloudflare.com/trust-hub/","question":"What security certifications does Cloudflare Workers have?","confidence":0.7},{"answer":"Cloudflare Workers is available worldwide. The vendor is headquartered in the United States.","source":"https://www.cloudflare.com/plans","question":"Where is Cloudflare Workers available?","confidence":0.75}]` | `[{"answer":"Developers write short-lived functions that are triggered by HTTP requests or events, while the framework handles Kubernetes infrastructure management automatically. This eliminates the need to manually build containers or manage registries. It is indexed under Serverless & Edge Platforms.","source":"https://fission.io","question":"What is Fission?","confidence":0.6},{"answer":"Fission is open source, so it can be self-hosted and used at no licence cost. It is released under the Apache-2.0 licence. Pricing changes often, so verify at source before relying on it.","source":"https://fission.io","question":"Is Fission free to use?","confidence":0.6},{"answer":"Fission supports a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://fission.io","question":"What platforms does Fission support?","confidence":0.6},{"answer":"Yes. Fission can be deployed cloud / SaaS, on-premise and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://fission.io","question":"Can Fission be self-hosted?","confidence":0.6},{"answer":"We have confirmed 6 integrations for Fission, including Kubernetes, Istio, Fluentd, Prometheus, Grafana and MCP. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://fission.io","question":"What does Fission integrate with?","confidence":0.6},{"answer":"Yes. Fission is published under the Apache-2.0 licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://github.com/fission/fission","question":"Is Fission open source?","confidence":0.95}]` |
| deployment.options | `{"self_hosted":true}` | `{"self_hosted":true}` |
| description.long | A server runtime environment based on Cloudflare Workers' underlying code, designed for self-hosting applications built with JavaScript and WebAssembly. It provides web-platform standard APIs and functions as a programmable HTTP proxy. | An open-source framework for building and deploying serverless functions on Kubernetes with automatic scaling. Supports multiple programming languages and can be triggered by HTTP requests, message queue events, and scheduled tasks. |
| features.capabilities | `{"hosting":"cloud","triggers":"HTTP requests, cron schedules, webhooks, message queues","languages":"JavaScript, TypeScript, Python, Rust","cold_start":"none","cli_and_iac":true,"http_trigger":true,"durable_state":true,"scale_to_zero":true,"custom_runtime":true,"scheduled_cron":true,"edge_distributed":true,"runtime_substrate":"isolate"}` | `{"hosting":"both","triggers":"HTTP and event triggers","languages":"Python, NodeJS, Go, Rust, C#, PHP (extensible to any language)","cold_start":"provisioned","cli_and_iac":true,"http_trigger":true,"scale_to_zero":true,"custom_runtime":true,"scheduled_cron":true,"edge_distributed":false,"runtime_substrate":"container","observability_builtin":true}` |
| integrations.count | - | 6 |
| integrations.list | - | `[{"name":"Kubernetes"},{"name":"Istio"},{"name":"Fluentd"},{"name":"Prometheus"},{"name":"Grafana"},{"name":"MCP"}]` |
| language.primary | - | Go |
| license.spdx | - | Apache-2.0 |
| market.availability | `{"hqCountry":"US","primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | - |
| platform.support | `{"cli":true,"mac":true,"linux":true,"windows":true}` | `{"cli":true}` |
| pricing | `{"type":"hybrid","plans":[{"free":true,"name":"Free","summary":"Free tier for hobby projects","features":["DNS","DDoS Protection","CDN","Universal SSL","WAF","Free Managed Ruleset","SSO Support","Role-based Account Control"],"components":[{"kind":"fixed","amount":0,"period":"month","currency":"USD"}],"description":"For personal or hobby projects","contactSales":false,"includedLimits":{"containers_cpu":"375 vCPU-min","containers_disk":"200 GB-hrs","workers_cpu_time":"10ms/request","workers_requests":"100k/day","browser_rendering":"10 min/day","containers_memory":"25 GiB-hrs","workflows_storage":"1 GB","browser_concurrent":"3 browsers","workflows_cpu_time":"10ms/invocation","workflows_requests":"100k/day","containers_egress_na_eu":"1 TB","durable_objects_duration":"13k GB-s/day","durable_objects_requests":"100k/day","durable_objects_kv_storage":"1 GB","durable_objects_sql_storage":"5 GB","durable_objects_sql_rows_read":"50M/day","durable_objects_sql_rows_written":"100k/day"}},{"free":false,"name":"Pro","summary":"$20/mo billed annually or $25/mo billed monthly","features":["Fast DNS","Unmetered DDoS Protection","CDN","Universal SSL Certificate","Free Managed Ruleset","Web Application Firewall","Lossless Image Optimization","Accelerated Mobile Pages","100% Uptime SLA","1x Uptime Service Credits","Single-Sign-On Support","Role-based Account Control"],"commitment":"monthly","components":[{"kind":"fixed","amount":25,"period":"month","currency":"USD"},{"kind":"fixed","amount":20,"period":"year","currency":"USD"}],"description":"For professional websites","contactSales":false},{"free":false,"name":"Business","summary":"$200/mo billed annually or $250/mo billed monthly","features":["Fast DNS","Unmetered DDoS Protection","CDN","Universal SSL Certificate","Free Managed Ruleset","Web Application Firewall","Lossless Image Optimization","Accelerated Mobile Pages","PCI DSS 4.0 Compliance","10x or 25x Uptime Service Credits","Single-Sign-On Support","Role-based Account Control","Network Prioritization"],"commitment":"monthly","components":[{"kind":"fixed","amount":250,"period":"month","currency":"USD"},{"kind":"fixed","amount":200,"period":"year","currency":"USD"}],"description":"For small businesses operating online","contactSales":false},{"free":false,"name":"Contract","summary":"Custom pricing, billed annually","commitment":"annual","description":"For mission-critical applications","contactSales":true}],"addOns":[{"name":"Workers (metered)","components":[{"per":{"qty":1000000,"unit":"requests"},"kind":"metered","amount":0.3,"currency":"USD"},{"per":{"qty":1000000,"unit":"CPU ms"},"kind":"metered","amount":0.02,"currency":"USD"}]},{"name":"Containers (metered)","components":[{"per":{"qty":1,"unit":"GiB-second"},"kind":"metered","amount":0.0000025,"currency":"USD"},{"per":{"qty":1,"unit":"vCPU-second"},"kind":"metered","amount":0.00002,"currency":"USD"},{"per":{"qty":1,"unit":"GB-second"},"kind":"metered","amount":7e-8,"currency":"USD"},{"per":{"qty":1,"unit":"GB"},"kind":"metered","amount":0.025,"currency":"USD"}]},{"name":"Durable Objects (metered)","components":[{"per":{"qty":1000000,"unit":"requests"},"kind":"metered","amount":0.15,"currency":"USD"},{"per":{"qty":1000000,"unit":"GB-s"},"kind":"metered","amount":12.5,"currency":"USD"},{"per":{"qty":1000000,"unit":"SQL rows read"},"kind":"metered","amount":0.001,"currency":"USD"},{"per":{"qty":1000000,"unit":"SQL rows written"},"kind":"metered","amount":1,"currency":"USD"},{"per":{"qty":1,"unit":"GB-month"},"kind":"metered","amount":0.2,"currency":"USD"}]},{"name":"Browser Rendering (metered)","components":[{"per":{"qty":1,"unit":"hour"},"kind":"metered","amount":0.09,"currency":"USD"},{"per":{"qty":1,"unit":"browser"},"kind":"metered","amount":2,"currency":"USD"}]},{"name":"Workflows (metered)","components":[{"per":{"qty":1000000,"unit":"requests"},"kind":"metered","amount":0.3,"currency":"USD"},{"per":{"qty":1000000,"unit":"CPU ms"},"kind":"metered","amount":0.02,"currency":"USD"},{"per":{"qty":1,"unit":"GB-month"},"kind":"metered","amount":0.2,"currency":"USD"}]}],"summary":"Free tier with per-request and per-CPU metering. General Cloudflare plans from free to $250/mo; Workers add-on services metered separately.","currency":"USD","freeTier":true,"sourceUrl":"https://www.cloudflare.com/plans","retrievedAt":"2026-08-14T16:41:04.189Z","startingPrice":{"amount":20,"period":"month","currency":"USD"},"billingPeriods":["month","year"]}` | `{"type":"open_source","summary":"Free, open source under Apache License","freeTier":true,"sourceUrl":"https://fission.io","retrievedAt":"2026-08-14T09:18:36.308Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | open_source | open_source |
| pricing.price_level | free | free |
| pricing.transparent | yes | yes |
| release.cadence_days | - | 24 |
| release.history | - | `[{"url":"https://github.com/fission/fission/releases/tag/v1.27.0","date":"2026-06-22T15:02:22Z","type":"stable","version":"v1.27.0"},{"url":"https://github.com/fission/fission/releases/tag/v1.26.0","date":"2026-06-13T11:47:51Z","type":"prerelease","version":"v1.26.0"},{"url":"https://github.com/fission/fission/releases/tag/v1.25.0","date":"2026-06-05T11:49:37Z","type":"stable","version":"v1.25.0"},{"url":"https://github.com/fission/fission/releases/tag/v1.24.0","date":"2026-05-26T19:01:42Z","type":"prerelease","version":"v1.24.0"},{"url":"https://github.com/fission/fission/releases/tag/v1.23.0","date":"2026-05-15T04:57:05Z","type":"stable","version":"v1.23.0"},{"url":"https://github.com/fission/fission/releases/tag/v1.22.0","date":"2025-12-18T17:01:59Z","type":"stable","version":"v1.22.0"},{"url":"https://github.com/fission/fission/releases/tag/v1.22.0-rc2","date":"2025-12-15T11:49:48Z","type":"prerelease","version":"v1.22.0-rc2"},{"url":"https://github.com/fission/fission/releases/tag/v1.21.0","date":"2025-01-25T16:56:09Z","type":"stable","version":"v1.21.0"},{"url":"https://github.com/fission/fission/releases/tag/v1.21.0-rc2","date":"2025-01-24T05:32:02Z","type":"prerelease","version":"v1.21.0-rc2"},{"url":"https://github.com/fission/fission/releases/tag/v1.21.0-rc1","date":"2025-01-15T17:44:45Z","type":"prerelease","version":"v1.21.0-rc1"},{"url":"https://github.com/fission/fission/releases/tag/v1.20.5","date":"2024-10-04T13:27:46Z","type":"stable","version":"v1.20.5"},{"url":"https://github.com/fission/fission/releases/tag/v1.20.4","date":"2024-09-02T12:14:30Z","type":"stable","version":"v1.20.4"},{"url":"https://github.com/fission/fission/releases/tag/v1.20.3","date":"2024-08-09T10:32:49Z","type":"stable","version":"v1.20.3"},{"url":"https://github.com/fission/fission/releases/tag/v1.20.2","date":"2024-05-27T13:41:29Z","type":"stable","version":"v1.20.2"},{"url":"https://github.com/fission/fission/releases/tag/v1.20.1","date":"2024-01-15T04:59:55Z","type":"stable","version":"v1.20.1"},{"url":"https://github.com/fission/fission/releases/tag/v1.20.0","date":"2023-11-30T16:29:49Z","type":"stable","version":"v1.20.0"},{"url":"https://github.com/fission/fission/releases/tag/v1.20.0-rc2","date":"2023-11-27T10:57:09Z","type":"prerelease","version":"v1.20.0-rc2"},{"url":"https://github.com/fission/fission/releases/tag/v1.20.0-rc1","date":"2023-10-30T14:51:08Z","type":"prerelease","version":"v1.20.0-rc1"},{"url":"https://github.com/fission/fission/releases/tag/v1.19.0","date":"2023-05-19T04:32:34Z","type":"stable","version":"v1.19.0"},{"url":"https://github.com/fission/fission/releases/tag/v1.19.0-rc2","date":"2023-05-12T06:15:59Z","type":"prerelease","version":"v1.19.0-rc2"}]` |
| reliability.sla_pct | 100 | - |
| reliability.status_page | yes | - |
| security.disclosure_policy | yes | - |
| security.gdpr | yes | - |
| security.iso27001 | yes | - |
| security.pci | yes | - |
| security.scorecard | - | 7.7 |
| security.soc2 | yes | - |
| security.trust_center | https://www.cloudflare.com/learning/security/account-takeover | - |
| security.vulnerabilities | - | `{"count":18,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Ffission%2Ffission&per_page=100","last_12m":18,"max_severity":"CRITICAL"}` |

## Capabilities (Serverless & Edge Platforms)

| Capability | Cloudflare Workers | Fission |
|---|:--:|:--:|
| **Core** |  |  |
| Execution substrate | V8 isolate | Container |
| Language / runtime breadth | JavaScript, TypeScript, Python, Rust | Python, NodeJS, Go, Rust, C#, PHP (extensible to any language) |
| **Reach** |  |  |
| Runs at global edge PoPs | ✓ | ✗ |
| **Scale** |  |  |
| Scale to zero | ✓ | ✓ |
| **Performance** |  |  |
| Cold-start profile | None (isolate) | Provisioned concurrency |
| **Limits** |  |  |
| Max execution duration | - | - |
| **Integration** |  |  |
| Event source breadth | HTTP requests, cron schedules, webhooks, message queues | HTTP and event triggers |
| HTTP endpoint trigger | ✓ | ✓ |
| Cron / scheduled invocations | ✓ | ✓ |
| **State** |  |  |
| Durable state / workflow primitive | ✓ | - |
| **Flexibility** |  |  |
| Bring-your-own runtime / container | ✓ | ✓ |
| **Deployment** |  |  |
| Hosting | Cloud only | Cloud + self-hosted |
| **Ops** |  |  |
| Built-in logs / metrics / tracing | - | ✓ |
| **Extensibility** |  |  |
| CLI + IaC / framework support | ✓ | ✓ |

*Source: vioscaleAI. Generated 2026-10-16T19:04:33.912Z. "-" = undocumented, not absent.*