Yaak

Desktop API client.

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Profile updated 2026-11-08

Console’s review

Mar 6, 2025 · Reviewed by David Mytton

What we like

GUI for interacting with any type of API (REST, HTTP, GraphQL, gRPC, WebSocket, SSE). Supports auth (basic, bearer, OAuth, etc). Import from common tools (OpenAPI, Postman, curl, etc). Themeable and extensible with Node.js. Supports environments and variables. Cross platform. Free for personal use. Open source.

Tradeoffs

Not fully native, but it’s not Electron (built in Rust with Tauri).

Is Yaak a fit?

Based on Console’s review published on 2025-03-06.

Who it’s for

Developers who need to interact with various types of APIs

Why consider it

Supports a wide range of API types and authentication methods

Keep in mind

It's not fully native

Key facts

What it is

Local-first desktop API client.

Source ↗Checked 2026-11-08

Company or maintainer

Mountain Loop Labs; built by the original creator of Insomnia.

Source ↗Checked 2026-11-08

Source and licensing

Open-source code: MIT. Commercial-use licensing applies to prebuilt binaries.

Source ↗Checked 2026-11-08

Tech stack

Runs on: Linux
Windows
macOS
Integrates with: GraphQL
HTTP API
gRPC
Written in: Rust

Checked 2026-10-11

Source and notes

Rust/Tauri/React API client supports macOS, Windows and Linux and REST, GraphQL and gRPC.

View research source ↗

Coverage may be incomplete. “Written in” describes implementation, not supported project languages.

Pricing

Source code is free under MIT. Prebuilt app is free for personal use; Individual commercial licence USD 79/year or USD 349 once. Business: USD 149/user/year. Commercial trial: 30 days.

Pricing source ↗Checked 2026-11-08