# SvelteKit vs Vapor

**Leader by vioscaleAI score:** SvelteKit

| Attribute | SvelteKit | Vapor |
|---|---|---|
| **vioscaleAI score** | 64.2 (67% (medium)) | 55.9 (67% (medium)) |
| activity.commits_last_30d | 47 | 29 |
| adoption.dependent_repos | 56,439 | 796 |
| adoption.github_stars | 88,371 | 26,225 |
| content.faq | `[{"answer":"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. It is indexed under Web Frameworks.","source":"https://kit.svelte.dev","question":"What is SvelteKit?","confidence":0.6},{"answer":"SvelteKit is open source, so it can be self-hosted and used at no licence cost. It is released under the MIT licence. Pricing changes often, so verify at source before relying on it.","source":"https://kit.svelte.dev","question":"Is SvelteKit free to use?","confidence":0.6},{"answer":"We have confirmed browser-based access to SvelteKit. That is the extent of what we could verify from public sources, so it may well offer desktop or mobile clients we have not indexed.","source":"https://kit.svelte.dev","question":"What platforms does SvelteKit support?","confidence":0.6},{"answer":"Yes. SvelteKit can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://kit.svelte.dev","question":"Can SvelteKit be self-hosted?","confidence":0.6},{"answer":"Yes. SvelteKit is published under the MIT 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/sveltejs/svelte","question":"Is SvelteKit open source?","confidence":0.95}]` | `[{"answer":"A framework for building HTTP servers and APIs using Swift with strong type safety and performance optimization. It is indexed under Web Frameworks.","source":"https://www.vapor.codes/","question":"What is Vapor?","confidence":0.6},{"answer":"Vapor is open source, so it can be self-hosted and used at no licence cost. It is released under the MIT licence. Pricing changes often, so verify at source before relying on it.","source":"https://www.vapor.codes/","question":"Is Vapor free to use?","confidence":0.6},{"answer":"Yes. Vapor is published under the MIT 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/vapor/vapor","question":"Is Vapor open source?","confidence":0.95}]` |
| deployment.options | `{"self_hosted":true}` | - |
| description.long | A compiler-based UI framework that transforms concise component syntax into minimal browser code, using standard HTML, CSS, and JavaScript. | Vapor is a framework for creating server-side applications, HTTP services, and backends using Swift. It provides APIs designed for writing safe, efficient, and maintainable server applications. |
| features.capabilities | `{"language":"JavaScript","rendering":"csr","hot_reload":true}` | `{"language":"Swift","rendering":"ssr","api_routes":true}` |
| language.primary | JavaScript | Swift |
| license.spdx | MIT | MIT |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | - |
| platform.support | `{"web":true}` | - |
| pricing | `{"type":"open_source","summary":"Free and open source (MIT license)","freeTier":true,"sourceUrl":"https://kit.svelte.dev","retrievedAt":"2026-08-03T12:19:10.877Z"}` | `{"type":"open_source","freeTier":true,"sourceUrl":"https://www.vapor.codes/","retrievedAt":"2026-08-13T22:59:42.865Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | open_source | commercial |
| pricing.price_level | free | free |
| pricing.transparent | yes | - |
| release.cadence_days | 4 | 14 |
| release.history | `[{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.57.2","date":"2026-10-06T14:20:22Z","type":"stable","version":"svelte@5.57.2"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.57.1","date":"2026-09-18T23:51:13Z","type":"stable","version":"svelte@5.57.1"},{"url":"https://github.com/sveltejs/svelte/releases/tag/svelte%405.57.0","date":"2026-08-28T23:31:40Z","type":"stable","version":"svelte@5.57.0"},{"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/vapor/vapor/releases/tag/5.0.0-beta.4","date":"2026-10-13T11:49:31Z","type":"stable","version":"5.0.0-beta.4"},{"url":"https://github.com/vapor/vapor/releases/tag/5.0.0-beta.3","date":"2026-10-01T14:38:50Z","type":"stable","version":"5.0.0-beta.3"},{"url":"https://github.com/vapor/vapor/releases/tag/4.122.2","date":"2026-09-17T10:04:26Z","type":"stable","version":"4.122.2"},{"url":"https://github.com/vapor/vapor/releases/tag/5.0.0-beta.2","date":"2026-09-16T14:41:45Z","type":"stable","version":"5.0.0-beta.2"},{"url":"https://github.com/vapor/vapor/releases/tag/5.0.0-beta.1","date":"2026-09-15T12:51:10Z","type":"stable","version":"5.0.0-beta.1"},{"url":"https://github.com/vapor/vapor/releases/tag/4.122.1","date":"2026-08-25T16:42:26Z","type":"stable","version":"4.122.1"},{"url":"https://github.com/vapor/vapor/releases/tag/5.0.0-alpha.2","date":"2026-08-11T14:44:16Z","type":"prerelease","version":"5.0.0-alpha.2"},{"url":"https://github.com/vapor/vapor/releases/tag/4.122.0","date":"2026-07-01T21:45:49Z","type":"stable","version":"4.122.0"},{"url":"https://github.com/vapor/vapor/releases/tag/5.0.0-alpha.1","date":"2026-06-11T19:25:37Z","type":"prerelease","version":"5.0.0-alpha.1"},{"url":"https://github.com/vapor/vapor/releases/tag/4.121.4","date":"2026-04-10T17:17:16Z","type":"stable","version":"4.121.4"},{"url":"https://github.com/vapor/vapor/releases/tag/4.121.3","date":"2026-02-24T17:37:47Z","type":"stable","version":"4.121.3"},{"url":"https://github.com/vapor/vapor/releases/tag/4.121.2","date":"2026-02-10T16:23:51Z","type":"stable","version":"4.121.2"},{"url":"https://github.com/vapor/vapor/releases/tag/4.121.1","date":"2026-01-14T13:48:58Z","type":"stable","version":"4.121.1"},{"url":"https://github.com/vapor/vapor/releases/tag/4.121.0","date":"2026-01-05T12:16:24Z","type":"stable","version":"4.121.0"},{"url":"https://github.com/vapor/vapor/releases/tag/4.120.0","date":"2025-12-12T22:35:41Z","type":"stable","version":"4.120.0"},{"url":"https://github.com/vapor/vapor/releases/tag/4.119.2","date":"2025-11-11T15:07:16Z","type":"stable","version":"4.119.2"},{"url":"https://github.com/vapor/vapor/releases/tag/4.119.1","date":"2025-11-10T13:09:06Z","type":"stable","version":"4.119.1"},{"url":"https://github.com/vapor/vapor/releases/tag/4.119.0","date":"2025-11-05T11:24:54Z","type":"stable","version":"4.119.0"},{"url":"https://github.com/vapor/vapor/releases/tag/4.118.0","date":"2025-11-04T15:08:07Z","type":"stable","version":"4.118.0"},{"url":"https://github.com/vapor/vapor/releases/tag/4.117.2","date":"2025-11-03T16:24:04Z","type":"stable","version":"4.117.2"}]` |
| security.scorecard | 7.6 | 7.4 |
| security.vulnerabilities | `{"count":14,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=svelte&per_page=100","last_12m":12,"max_severity":"HIGH"}` | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=swiftpm&package_name=github.com%2Fvapor%2Fvapor&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (Web Frameworks)

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

*Source: vioscaleAI. Generated 2026-10-16T21:00:00.289Z. "-" = undocumented, not absent.*