# Ktor vs NestJS

| Attribute | Ktor | NestJS |
|---|---|---|
| **Vioscale score** | 60.8 (49% (low)) | 63.8 (78% (high)) |
| activity.commits_last_30d | 57 | 100 |
| adoption.dependent_repos | 1,171 | 78,848 |
| adoption.github_stars | 14,503 | 76,466 |
| deployment.options | - | `{"cloud":true,"on_prem":true,"air_gapped":true,"self_hosted":true}` |
| description.long | Ktor is an open-source framework for creating asynchronous server and client applications, from microservices to HTTP clients. Built on Kotlin and coroutines, it emphasizes simplicity, lightweight design, and extensibility. | A unified platform integrating planning, source control, and CI/CD pipelines with built-in security scanning and compliance controls to help teams accelerate software delivery and maintain security across the entire lifecycle. |
| features.capabilities | `{"language":"Kotlin"}` | `{"language":"TypeScript/JavaScript","api_routes":true,"typescript_first":true}` |
| integrations.count | - | 9 |
| integrations.list | - | `[{"name":"Express"},{"name":"Fastify"},{"name":"GraphQL"},{"name":"TypeORM"},{"name":"Swagger/OpenAPI"},{"name":"Bull"},{"name":"WebSockets"},{"name":"Microservices"},{"name":"Angular Universal"}]` |
| language.primary | Kotlin | TypeScript |
| license.spdx | Apache-2.0 | MIT |
| market.availability | - | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | - | `{"cli":true,"web":true}` |
| pricing | `{"type":"open_source","freeTier":true,"sourceUrl":"https://ktor.io/","retrievedAt":"2026-08-13T23:07:06.179Z"}` | `{"type":"hybrid","freeTier":true,"sourceUrl":"https://nestjs.com","retrievedAt":"2026-08-21T12:46:31.197Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | open_source | commercial |
| pricing.price_level | free | low |
| pricing.transparent | - | no |
| release.cadence_days | 27 | 6 |
| release.history | `[{"url":"https://github.com/ktorio/ktor/releases/tag/3.5.2","date":"2026-08-04T12:08:07Z","type":"stable","version":"3.5.2"},{"url":"https://github.com/ktorio/ktor/releases/tag/3.5.1","date":"2026-06-29T08:05:31Z","type":"stable","version":"3.5.1"},{"url":"https://github.com/ktorio/ktor/releases/tag/3.5.0","date":"2026-05-18T06:57:48Z","type":"stable","version":"3.5.0"},{"url":"https://github.com/ktorio/ktor/releases/tag/3.4.3","date":"2026-04-23T11:20:32Z","type":"stable","version":"3.4.3"},{"url":"https://github.com/ktorio/ktor/releases/tag/3.4.2","date":"2026-03-30T13:37:19Z","type":"stable","version":"3.4.2"},{"url":"https://github.com/ktorio/ktor/releases/tag/3.4.1","date":"2026-03-04T14:20:52Z","type":"stable","version":"3.4.1"},{"url":"https://github.com/ktorio/ktor/releases/tag/3.4.0","date":"2026-01-23T08:55:39Z","type":"stable","version":"3.4.0"},{"url":"https://github.com/ktorio/ktor/releases/tag/3.3.3","date":"2025-11-27T12:13:53Z","type":"stable","version":"3.3.3"},{"url":"https://github.com/ktorio/ktor/releases/tag/3.3.2","date":"2025-11-05T14:08:06Z","type":"stable","version":"3.3.2"},{"url":"https://github.com/ktorio/ktor/releases/tag/3.3.1","date":"2025-10-10T06:19:56Z","type":"stable","version":"3.3.1"},{"url":"https://github.com/ktorio/ktor/releases/tag/3.3.0","date":"2025-09-12T11:59:39Z","type":"stable","version":"3.3.0"},{"url":"https://github.com/ktorio/ktor/releases/tag/3.2.3","date":"2025-07-29T14:18:09Z","type":"stable","version":"3.2.3"},{"url":"https://github.com/ktorio/ktor/releases/tag/3.2.2","date":"2025-07-14T11:45:21Z","type":"stable","version":"3.2.2"},{"url":"https://github.com/ktorio/ktor/releases/tag/3.2.1","date":"2025-07-04T08:57:57Z","type":"stable","version":"3.2.1"},{"url":"https://github.com/ktorio/ktor/releases/tag/3.2.0","date":"2025-06-13T12:19:28Z","type":"stable","version":"3.2.0"},{"url":"https://github.com/ktorio/ktor/releases/tag/3.1.3","date":"2025-05-06T11:52:28Z","type":"stable","version":"3.1.3"},{"url":"https://github.com/ktorio/ktor/releases/tag/3.1.2","date":"2025-03-28T09:27:52Z","type":"stable","version":"3.1.2"},{"url":"https://github.com/ktorio/ktor/releases/tag/3.1.1","date":"2025-02-25T11:49:42Z","type":"stable","version":"3.1.1"},{"url":"https://github.com/ktorio/ktor/releases/tag/3.1.0","date":"2025-02-12T11:44:49Z","type":"stable","version":"3.1.0"},{"url":"https://github.com/ktorio/ktor/releases/tag/3.0.3","date":"2024-12-19T14:25:41Z","type":"stable","version":"3.0.3"}]` | `[{"url":"https://github.com/nestjs/nest/releases/tag/v11.2.3","date":"2026-08-25T10:59:41Z","type":"stable","version":"v11.2.3"},{"url":"https://github.com/nestjs/nest/releases/tag/v11.2.2","date":"2026-08-25T07:59:18Z","type":"stable","version":"v11.2.2"},{"url":"https://github.com/nestjs/nest/releases/tag/v11.2.1","date":"2026-08-14T17:53:21Z","type":"stable","version":"v11.2.1"},{"url":"https://github.com/nestjs/nest/releases/tag/v11.2.0","date":"2026-08-14T12:13:03Z","type":"stable","version":"v11.2.0"},{"url":"https://github.com/nestjs/nest/releases/tag/v11.1.29","date":"2026-08-10T09:40:32Z","type":"stable","version":"v11.1.29"},{"url":"https://github.com/nestjs/nest/releases/tag/v11.1.28","date":"2026-07-08T08:33:50Z","type":"stable","version":"v11.1.28"},{"url":"https://github.com/nestjs/nest/releases/tag/v11.1.27","date":"2026-06-15T09:17:02Z","type":"stable","version":"v11.1.27"},{"url":"https://github.com/nestjs/nest/releases/tag/v11.1.26","date":"2026-06-08T12:37:55Z","type":"stable","version":"v11.1.26"},{"url":"https://github.com/nestjs/nest/releases/tag/v11.1.25","date":"2026-06-08T07:39:37Z","type":"stable","version":"v11.1.25"},{"url":"https://github.com/nestjs/nest/releases/tag/v11.1.24","date":"2026-05-25T08:41:52Z","type":"stable","version":"v11.1.24"},{"url":"https://github.com/nestjs/nest/releases/tag/v11.1.23","date":"2026-05-21T18:18:12Z","type":"stable","version":"v11.1.23"},{"url":"https://github.com/nestjs/nest/releases/tag/v11.1.22","date":"2026-05-21T08:57:18Z","type":"stable","version":"v11.1.22"},{"url":"https://github.com/nestjs/nest/releases/tag/v11.1.21","date":"2026-05-14T09:00:47Z","type":"stable","version":"v11.1.21"},{"url":"https://github.com/nestjs/nest/releases/tag/v11.1.20","date":"2026-05-13T07:29:54Z","type":"stable","version":"v11.1.20"},{"url":"https://github.com/nestjs/nest/releases/tag/v11.1.19","date":"2026-04-13T07:56:09Z","type":"stable","version":"v11.1.19"},{"url":"https://github.com/nestjs/nest/releases/tag/v11.1.18","date":"2026-04-03T09:40:47Z","type":"stable","version":"v11.1.18"},{"url":"https://github.com/nestjs/nest/releases/tag/v11.1.17","date":"2026-03-16T10:41:45Z","type":"stable","version":"v11.1.17"},{"url":"https://github.com/nestjs/nest/releases/tag/v11.1.16","date":"2026-03-05T13:25:51Z","type":"stable","version":"v11.1.16"},{"url":"https://github.com/nestjs/nest/releases/tag/v11.1.15","date":"2026-03-03T13:53:50Z","type":"stable","version":"v11.1.15"},{"url":"https://github.com/nestjs/nest/releases/tag/v11.1.14","date":"2026-02-17T16:26:00Z","type":"stable","version":"v11.1.14"}]` |
| security.fedramp | - | yes |
| security.scorecard | 4.6 | 7.5 |
| security.vulnerabilities | `{"count":1,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=io.ktor%3Aktor-client-cio&per_page=100","last_12m":0,"max_severity":"LOW"}` | `{"count":1,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=%40nestjs%2Fcommon&per_page=100","last_12m":0,"max_severity":"MODERATE"}` |

## Capabilities (Web Frameworks)

| Capability | Ktor | NestJS |
|---|:--:|:--:|
| **Core** |  |  |
| Rendering model | - | - |
| File-based routing | - | - |
| Language | Kotlin | 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 2026-09-01T17:16:57.471Z. "-" = undocumented, not absent.*