# API Management apps ranked on King of Apps

> Controls API access, traffic and usage across teams, applications and external developer connections.

Path: [IT Software](https://king-of-apps.vercel.app/category/it-software) > [Development](https://king-of-apps.vercel.app/category/development) > [API Management](https://king-of-apps.vercel.app/category/api-management)

_Data as of 2026-11-02T14:06:36.778Z. Ranks change whenever someone pays._

The #1 API Management app is **Relaykit** (relaykit.dev), with $49 paid. 1 app is listed in API Management.

Ranks are global: a category page filters the global board. The order reflects money paid, not quality.

## API Management leaderboard

| # | Overall rank | App | Domain | Description | Total paid | Clicks | Listed since |
|---|---|---|---|---|---|---|---|
| 1 | 9 | [Relaykit](https://king-of-apps.vercel.app/app/relaykit.dev) | relaykit.dev | API gateway with feature flags: route a percentage of traffic to a new version and roll back in one click. | $49 | 31 | 2026-11-02 |

## Related categories

- [API Development](https://king-of-apps.vercel.app/category/api-development): Builds application programming interfaces that let software systems exchange data and use shared functions.
- [API Documentation Management](https://king-of-apps.vercel.app/category/api-documentation-management): Creates, organizes and publishes reference material that helps developers understand and use APIs.
- [API Generation](https://king-of-apps.vercel.app/category/api-generation): Generates API endpoints and specifications from schemas, models or existing application data structures.
- [API Marketplace](https://king-of-apps.vercel.app/category/api-marketplace): Lets teams publish, discover and subscribe to APIs through a searchable catalog for developers.
- [API Mocking](https://king-of-apps.vercel.app/category/api-mocking): Creates simulated API endpoints so developers can test applications before live services are available.
- [API Platforms](https://king-of-apps.vercel.app/category/api-platforms): Provides tools to design, deploy, run and monitor APIs across applications and development environments.
- [E-Signature APIs](https://king-of-apps.vercel.app/category/e-signature-apis): Lets developers add document signing, signer workflows, identity checks and signature tracking to applications.
- [Unified APIs](https://king-of-apps.vercel.app/category/unified-apis): Unified APIs give developers one interface for connecting multiple services with different data models and endpoints.