ApiArk is unclaimed —

ApiArk

No Login. No Cloud. No Bloat.·apiark.dev

ApiArk is a local-first API development platform for building and testing REST, GraphQL, gRPC, WebSocket, SSE, and MQTT APIs from a single interface. Built with Tauri v2 and Rust, it runs at native speed (~50MB RAM, under 2 seconds startup) without requiring a login or cloud account. Collections are stored as individual, Git-diffable YAML files on the local filesystem, and the app includes scripting, mock servers, a CLI tool, and code generation. It is open source under the MIT license and offered free with no account, telemetry, or usage limits.

What it's for

Sending REST, GraphQL, gRPC, WebSocket, SSE, and MQTT requests from one interfaceBuilding and organizing API collections stored as Git-versionable YAML filesGenerating API requests from natural language using AIRunning local mock serversScheduled API testing and monitoringGenerating API documentationData-driven collection/test runningImporting collections from Postman, Bruno, Insomnia, and OpenAPIExporting to Postman, OpenAPI, cURL, and HAR formatsWriting pre/post request scripts in JavaScript or TypeScriptExtending functionality with JavaScript or WASM plugins

Features 20

AI-powered request generation from natural language
API documentation generation
Audit logs
Built-in Git UI
CLI tool (apiark run, import, export)
Collection runner with data-driven testing
cURL import/export
Git-native YAML file storage, one file per request
Local-first storage with no cloud or telemetry
Native performance via Tauri v2 + Rust backend (~50MB RAM, <2s startup)
OpenAPI spec editor with linting
Plugin ecosystem (JavaScript or WASM) for custom auth, transformers, integrations
Pre/post request scripting in TypeScript/JavaScript with Chai, CryptoJS, Lodash, Faker built in
Proxy capture mode bound to 127.0.0.1
Response diff viewer
Scheduled testing & monitors
SSO/SAML authentication
Support for REST, GraphQL, gRPC, WebSocket, SSE, MQTT
Team environment sharing
Unlimited local mock servers

At a glance

free tieropen source

TypeDesktop app

DeploymentInstalled (local)

PlatformsmacOS, Windows, Linux

Fordevelopers

Integrations

PostmanBrunoInsomniaOpenAPIGitGitHub

Resources

Pricing

ApiArk is entirely free; the comparison table lists competitor prices only (Postman $19/user/mo, Bruno $6/user/mo, Insomnia $12/user/mo, Hoppscotch Custom) for contrast, not ApiArk's own pricing.

ApiArkFree

Single plan, described as '$0 forever'; no paid tiers exist.

No limits stated — unlimited collections, environments, and mock servers