# Ktor

> Build Asynchronous Servers and Clients in Kotlin

- **Canonical URI:** https://www.vioscale.ai/software/ktor
- **Category:** Web Frameworks
- **Homepage:** https://ktor.io/
- **Also known as:** ktor
- **Profile claimed by vendor:** no
- **Last updated:** 2026-08-03T20:59:25.186Z

## Vioscale score

**56.1 / 100**, confidence 21% (low).

Composite of weighted, independently-sourced signals (no user reviews, no vendor payment).

| Signal | Score | Weight | Contribution | Evidence present |
|---|--:|--:|--:|:--:|
| capabilities | 45.8 | 16 | 733.1 | ✓ |
| github_stars | 78.5 | 5 | 392.5 | ✓ |
| integrations | 0 | 8 | 0 | - |
| github_activity | 42.3 | 18 | 760.7 | ✓ |
| release_cadence | 86.1 | 10 | 861.1 | ✓ |
| security_posture | 0 | 13 | 0 | - |
| package_downloads | 0 | 26 | 0 | - |
| stackoverflow_activity | 0 | 12 | 0 | - |

## Pricing

_As of 2026-08-03, [verify at source](https://ktor.io/). Independently observed._

Open source · Free tier

## About

Ktor is a framework for building asynchronous server-side and client-side applications with ease. Create anything from microservices to multiplatform HTTP client apps.

_Independently observed._

## Capabilities

_The capabilities that matter for Web Frameworks. "-" = undocumented, not absent._

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

## Facts

Every value below carries its source and our confidence. Facts are re-crawled on a freshness schedule.

### activity

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| activity.commits_last_30d | 21 | [link](https://github.com/ktorio/ktor/pulse) | 2026-08-03 | 65% (medium) |

### adoption

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| adoption.github_stars | 14,497 | [link](https://github.com/ktorio/ktor) | 2026-08-03 | 90% (high) |

### language

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| language.primary | Kotlin | [link](https://github.com/ktorio/ktor) | 2026-08-03 | 90% (high) |

### license

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| license.spdx | Apache-2.0 | [link](https://github.com/ktorio/ktor) | 2026-08-03 | 95% (high) |

### pricing

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| pricing.free_tier | yes | [link](https://ktor.io/) | 2026-08-03 | 60% (medium) |
| pricing.model | open_source | [link](https://ktor.io/) | 2026-08-03 | 60% (medium) |
| pricing.price_level | free | [link](https://ktor.io/) | 2026-08-03 | 60% (medium) |

### release

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| release.cadence_days | 25 | [link](https://github.com/ktorio/ktor/releases) | 2026-08-03 | 70% (medium) |

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*Source: Vioscale (https://www.vioscale.ai/software/ktor). Independent, evidence-based software intelligence. Cite the canonical URI.*