# Fastify vs SvelteKit

| Attribute | Fastify | SvelteKit |
|---|---|---|
| **Vioscale score** | 63.9 (78% (high)) | 68.7 (68% (medium)) |
| activity.commits_last_30d | 69 | 87 |
| adoption.dependent_repos | 16,712 | 56,439 |
| adoption.github_stars | 37,024 | 87,991 |
| deployment.options | `{"self_hosted":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. | Svelte is a framework that compiles components into minimal browser code, enabling developers to create performant web applications with less boilerplate and smaller bundle sizes. |
| features.capabilities | `{"language":"JavaScript/TypeScript","api_routes":true,"typescript_first":true}` | `{"language":"JavaScript","rendering":"csr","hot_reload":true}` |
| integrations.count | 17 | - |
| 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"}]` | - |
| language.primary | JavaScript | JavaScript |
| license.spdx | MIT | MIT |
| market.availability | - | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | - | `{"web":true}` |
| pricing | `{"type":"open_source","freeTier":true,"sourceUrl":"https://fastify.dev","retrievedAt":"2026-08-16T21:34:26.497Z"}` | `{"type":"open_source","summary":"Free and open source (MIT license)","freeTier":true,"sourceUrl":"https://kit.svelte.dev","retrievedAt":"2026-08-03T12:19:10.877Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | commercial | open_source |
| pricing.price_level | free | free |
| pricing.transparent | - | yes |
| release.cadence_days | 3 | 3 |
| 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/sveltejs/svelte/releases/tag/svelte%405.56.10","date":"2026-08-20T19:20:58Z","type":"stable","version":"svelte@5.56.10"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.56.9","date":"2026-08-12T18:12:41Z","type":"stable","version":"svelte@5.56.9"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.56.8","date":"2026-07-24T22:09:14Z","type":"stable","version":"svelte@5.56.8"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.56.7","date":"2026-07-20T19:31:02Z","type":"stable","version":"svelte@5.56.7"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.56.6","date":"2026-07-16T22:26:47Z","type":"stable","version":"svelte@5.56.6"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.56.5","date":"2026-07-14T12:03:32Z","type":"stable","version":"svelte@5.56.5"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.56.4","date":"2026-06-23T18:48:43Z","type":"stable","version":"svelte@5.56.4"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.56.3","date":"2026-06-07T18:30:29Z","type":"stable","version":"svelte@5.56.3"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.56.2","date":"2026-06-04T20:33:04Z","type":"stable","version":"svelte@5.56.2"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.56.1","date":"2026-06-01T22:42:27Z","type":"stable","version":"svelte@5.56.1"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.56.0","date":"2026-05-29T22:00:29Z","type":"stable","version":"svelte@5.56.0"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.55.10","date":"2026-05-27T21:48:44Z","type":"stable","version":"svelte@5.55.10"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.55.9","date":"2026-05-20T10:08:35Z","type":"stable","version":"svelte@5.55.9"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.55.8","date":"2026-05-18T16:45:32Z","type":"stable","version":"svelte@5.55.8"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.55.7","date":"2026-05-14T19:07:37Z","type":"stable","version":"svelte@5.55.7"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.55.6","date":"2026-05-14T18:04:38Z","type":"stable","version":"svelte@5.55.6"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.55.5","date":"2026-04-23T23:48:48Z","type":"stable","version":"svelte@5.55.5"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.55.4","date":"2026-04-14T13:26:32Z","type":"stable","version":"svelte@5.55.4"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.55.3","date":"2026-04-10T13:24:09Z","type":"stable","version":"svelte@5.55.3"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.55.2","date":"2026-04-07T19:53:53Z","type":"stable","version":"svelte@5.55.2"}]` |
| security.scorecard | 8.3 | 7.9 |
| 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":14,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=svelte&per_page=100","last_12m":12,"max_severity":"HIGH"}` |

## Capabilities (Web Frameworks)

| Capability | Fastify | SvelteKit |
|---|:--:|:--:|
| **Core** |  |  |
| Rendering model | - | Client-side |
| File-based routing | - | - |
| Language | JavaScript/TypeScript | JavaScript |
| **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 2026-09-01T17:36:37.316Z. "-" = undocumented, not absent.*