# Fastify vs Phoenix

| Attribute | Fastify | Phoenix |
|---|---|---|
| **Vioscale score** | 63.9 (78% (high)) | 59.7 (78% (high)) |
| activity.commits_last_30d | 69 | 26 |
| adoption.dependent_repos | 16,712 | 21,610 |
| adoption.github_stars | 37,024 | 23,125 |
| deployment.options | `{"self_hosted":true}` | `{"cloud":true,"self_hosted":true}` |
| description.long | A Node.js web framework optimized to handle high request volumes with minimal overhead, featuring a plugin system, JSON Schema validation, and native TypeScript support. | Phoenix is an Elixir-based web framework for building real-time, interactive applications with built-in GraphQL and REST API support and production-scale reliability. |
| features.capabilities | `{"language":"JavaScript/TypeScript","api_routes":true,"typescript_first":true}` | `{"language":"Elixir","rendering":"ssr","api_routes":true,"streaming_ssr":true,"server_components":true}` |
| integrations.count | 17 | 2 |
| integrations.list | `[{"name":"Next.js"},{"name":"Apollo Server"},{"name":"Angular"},{"name":"PostgreSQL"},{"name":"MongoDB"},{"name":"Redis"},{"name":"Elasticsearch"},{"name":"Swagger/OpenAPI"},{"name":"WebSocket"},{"name":"JWT"},{"name":"Helmet"},{"name":"Sentry"},{"name":"RabbitMQ"},{"name":"CORS"},{"name":"CSRF"},{"name":"OAuth2"},{"name":"Kubernetes"}]` | `[{"name":"Absinthe"},{"name":"Relay"}]` |
| language.primary | JavaScript | Elixir |
| license.spdx | MIT | MIT |
| platform.support | - | `{"web":true}` |
| pricing | `{"type":"open_source","freeTier":true,"sourceUrl":"https://fastify.dev","retrievedAt":"2026-08-16T21:34:26.497Z"}` | `{"type":"open_source","sourceUrl":"https://www.phoenixframework.org","retrievedAt":"2026-08-16T21:36:08.561Z"}` |
| pricing.free_tier | yes | - |
| pricing.model | commercial | open_source |
| pricing.price_level | free | free |
| release.cadence_days | 3 | 13 |
| release.history | `[{"url":"https://github.com/fastify/fastify/releases/tag/v6.0.0-alpha.2","date":"2026-08-19T01:54:36Z","type":"prerelease","version":"v6.0.0-alpha.2"},{"url":"https://github.com/fastify/fastify/releases/tag/v5.12.1","date":"2026-08-18T19:51:41Z","type":"stable","version":"v5.12.1"},{"url":"https://github.com/fastify/fastify/releases/tag/v6.0.0-alpha.1","date":"2026-08-13T15:57:10Z","type":"prerelease","version":"v6.0.0-alpha.1"},{"url":"https://github.com/fastify/fastify/releases/tag/v5.12.0","date":"2026-08-13T15:55:21Z","type":"stable","version":"v5.12.0"},{"url":"https://github.com/fastify/fastify/releases/tag/v6.0.0-alpha.0","date":"2026-08-11T08:32:37Z","type":"prerelease","version":"v6.0.0-alpha.0"},{"url":"https://github.com/fastify/fastify/releases/tag/v5.11.3","date":"2026-08-08T06:55:46Z","type":"stable","version":"v5.11.3"},{"url":"https://github.com/fastify/fastify/releases/tag/v5.11.2","date":"2026-08-03T08:21:47Z","type":"stable","version":"v5.11.2"},{"url":"https://github.com/fastify/fastify/releases/tag/v5.11.1","date":"2026-08-03T08:10:10Z","type":"stable","version":"v5.11.1"},{"url":"https://github.com/fastify/fastify/releases/tag/v5.11.0","date":"2026-07-30T09:32:16Z","type":"stable","version":"v5.11.0"},{"url":"https://github.com/fastify/fastify/releases/tag/v5.10.0","date":"2026-07-05T09:37:06Z","type":"stable","version":"v5.10.0"},{"url":"https://github.com/fastify/fastify/releases/tag/v5.9.0","date":"2026-06-28T08:21:36Z","type":"stable","version":"v5.9.0"},{"url":"https://github.com/fastify/fastify/releases/tag/v5.8.5","date":"2026-04-14T12:09:02Z","type":"stable","version":"v5.8.5"},{"url":"https://github.com/fastify/fastify/releases/tag/v5.8.4","date":"2026-03-23T10:31:20Z","type":"stable","version":"v5.8.4"},{"url":"https://github.com/fastify/fastify/releases/tag/v5.8.3","date":"2026-03-23T10:20:21Z","type":"stable","version":"v5.8.3"},{"url":"https://github.com/fastify/fastify/releases/tag/v5.8.2","date":"2026-03-07T09:42:46Z","type":"stable","version":"v5.8.2"},{"url":"https://github.com/fastify/fastify/releases/tag/v5.8.1","date":"2026-03-05T10:10:57Z","type":"stable","version":"v5.8.1"},{"url":"https://github.com/fastify/fastify/releases/tag/v5.8.0","date":"2026-03-05T09:33:05Z","type":"stable","version":"v5.8.0"},{"url":"https://github.com/fastify/fastify/releases/tag/v5.7.4","date":"2026-02-02T18:23:39Z","type":"stable","version":"v5.7.4"},{"url":"https://github.com/fastify/fastify/releases/tag/v5.7.3","date":"2026-02-02T17:57:52Z","type":"stable","version":"v5.7.3"},{"url":"https://github.com/fastify/fastify/releases/tag/v5.7.2","date":"2026-01-26T11:15:54Z","type":"stable","version":"v5.7.2"}]` | `[{"url":"https://github.com/phoenixframework/phoenix/releases/tag/v1.8.13","date":"2026-08-25T09:11:11Z","type":"stable","version":"v1.8.13"},{"url":"https://github.com/phoenixframework/phoenix/releases/tag/v1.8.12","date":"2026-08-20T18:05:53Z","type":"stable","version":"v1.8.12"},{"url":"https://github.com/phoenixframework/phoenix/releases/tag/v1.8.11","date":"2026-08-12T07:55:29Z","type":"stable","version":"v1.8.11"},{"url":"https://github.com/phoenixframework/phoenix/releases/tag/v1.8.10","date":"2026-08-10T16:25:23Z","type":"stable","version":"v1.8.10"},{"url":"https://github.com/phoenixframework/phoenix/releases/tag/v1.5.3","date":"2020-06-26T11:06:09Z","type":"stable","version":"v1.5.3"},{"url":"https://github.com/phoenixframework/phoenix/releases/tag/v1.2.1","date":"2016-08-11T19:49:39Z","type":"stable","version":"v1.2.1"},{"url":"https://github.com/phoenixframework/phoenix/releases/tag/v1.2.0","date":"2016-06-23T15:51:11Z","type":"stable","version":"v1.2.0"},{"url":"https://github.com/phoenixframework/phoenix/releases/tag/v1.2.0-rc.1","date":"2016-06-03T22:10:19Z","type":"stable","version":"v1.2.0-rc.1"},{"url":"https://github.com/phoenixframework/phoenix/releases/tag/v1.2.0-rc.0","date":"2016-05-01T13:02:05Z","type":"stable","version":"v1.2.0-rc.0"},{"url":"https://github.com/phoenixframework/phoenix/releases/tag/v1.1.3","date":"2016-01-20T15:35:11Z","type":"stable","version":"v1.1.3"},{"url":"https://github.com/phoenixframework/phoenix/releases/tag/v1.1.2","date":"2016-01-08T20:48:03Z","type":"stable","version":"v1.1.2"},{"url":"https://github.com/phoenixframework/phoenix/releases/tag/v1.1.1","date":"2015-12-26T20:13:30Z","type":"stable","version":"v1.1.1"},{"url":"https://github.com/phoenixframework/phoenix/releases/tag/v1.1.0","date":"2015-12-16T15:14:03Z","type":"stable","version":"v1.1.0"},{"url":"https://github.com/phoenixframework/phoenix/releases/tag/v1.0.4","date":"2015-11-30T21:51:39Z","type":"stable","version":"v1.0.4"},{"url":"https://github.com/phoenixframework/phoenix/releases/tag/v1.0.3","date":"2015-09-28T21:21:48Z","type":"stable","version":"v1.0.3"},{"url":"https://github.com/phoenixframework/phoenix/releases/tag/v1.0.2","date":"2015-09-06T23:30:25Z","type":"stable","version":"v1.0.2"},{"url":"https://github.com/phoenixframework/phoenix/releases/tag/v1.0.1","date":"2015-09-03T17:23:22Z","type":"stable","version":"v1.0.1"},{"url":"https://github.com/phoenixframework/phoenix/releases/tag/v1.0.0","date":"2015-08-28T15:59:27Z","type":"stable","version":"v1.0.0"},{"url":"https://github.com/phoenixframework/phoenix/releases/tag/v0.17.1","date":"2015-08-26T23:24:19Z","type":"stable","version":"v0.17.1"},{"url":"https://github.com/phoenixframework/phoenix/releases/tag/v0.17.0","date":"2015-08-19T09:05:41Z","type":"stable","version":"v0.17.0"}]` |
| security.scorecard | 8.3 | 6.7 |
| security.vulnerabilities | `{"count":10,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=fastify&per_page=100","last_12m":5,"max_severity":"HIGH"}` | `{"count":6,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=hex&package_name=phoenix&per_page=100","last_12m":4,"max_severity":"HIGH"}` |

## Capabilities (Web Frameworks)

| Capability | Fastify | Phoenix |
|---|:--:|:--:|
| **Core** |  |  |
| Rendering model | - | Server-side |
| File-based routing | - | - |
| Language | JavaScript/TypeScript | Elixir |
| **Rendering** |  |  |
| Server components | - | ✓ |
| Streaming SSR | - | ✓ |
| **Fullstack** |  |  |
| Built-in API / backend routes | ✓ | ✓ |
| **DX** |  |  |
| First-class TypeScript | ✓ | - |
| Fast refresh / HMR | - | - |
| **Deployment** |  |  |
| Edge runtime support | - | - |

*Source: Vioscale. Generated 2026-09-01T16:47:30.607Z. "-" = undocumented, not absent.*