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Yaak
v2026.4.0 → Request/folder settings overrides

The local-first API client

Send HTTP, GraphQL, gRPC, WebSocket, and SSE requests. Works offline with no account, plain-file Git sync, and a CLI built for agents

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134k
Open Source

Apple Linux Available for Mac, Windows, and Linux

Private by default

Local-only data, secrets encryption, and zero telemetry.

Works with Git

Optionally store data as plain-text for Git, Dropbox, etc.

Agent friendly

Full CLI for agents to create, update, and send requests.

Developer friendly

Work in the ways you're already used to.

Powerful when you need it

Yaak keeps things simple by default, exposing features only when needed.

Start from anywhere

Integrate with your existing workflow by importing data from many places:

PostmanInsomniaOpenAPICurlSwagger

Call any API

Mix multiple protocols together and work on any API within a single workspace.

RESTHTTPGraphQLgRPCWebSocketServer Sent Events

Authenticate anything

Automatically handle complex request authentication, so you don't have to:

OAuth 1/2AWS v4JWTBasicBearerAPI KeyCustom

Request chaining
Variables
Encrypted secrets
Auth inheritance
Batch send
Custom proxy
Cookies
Rich previews
Import/export
Paste Curl
Copy as Curl
Streaming
Git UI
Command palette
Autocomplete
Request docs

Security and privacy

Local-only, no telemetry, and encrypted secrets.

Local-only data

Requests and history live on your device. No cloud.

Encrypted secrets

ChaCha20-Poly1305 with keys in the OS keychain.

Zero telemetry

No analytics or tracking in the app.

No account required

Download and use. Nothing to sign up for.

No built-in AI

Connect your own agents via the CLI or MCP server.

Open source

MIT-licensed source you can audit and build yourself.

Read the security and privacy overview

Shipping since January 2024

Your feedback has been shaping Yaak since its launch in January 2024.

2026.4.0Settings Overrides, Cookie Editing, and Git Status
2026.3.0Agent-friendly CLI, JSON Comments, and Redirect Warnings
2026.2.0Git diff viewer, OAuth2 in external browser, and code snippets
2026.1.0Request Debugging, Customizable Hotkeys, and 30 New Themes
2025.9.01Password, NTLM Auth, and Better Git Compatibility
2025.8.0Sidebar Filtering, Environment Ordering, and Better Postman Imports
2025.7.0Superpowered Sidebar, AWS Auth, and Postman Environment Import
2025.6.0Folder Variables, Keychain Function, and Layout Toggle
View Roadmap

Trusted by developers

EGOIST
Yaak is now my first choice for API testing, light-weight yet powerful ✅ (powered by @TauriApps again)
Müjdat Korkmaz
I definitely recommend it. I tried others as well, but so far I find Yaak to be the most complete open source alternative to Postman
Bishal Roy
yaak is the best postman alternative i have ever used. it's feature rich and also looks so gorgeous
mariodev ⚡
First it was Postman, then insomnia was the new kid in the block, these two suckers got old and smell corpo from miles away, it is time now for yaak.app
Michael Bromley
Just got my commercial license for @yaakapp and if you work with APIs I encourage you to do the same - it's the best postman replacement out there

Hey, I'm Greg 👋🏼

Having created and sold Insomnia in 2019, I didn't think I'd build another API client, but the tools changed for the worse and I found myself looking for something better.

I started over and built something I'm proud to put my name behind.

Bring your existing collections

Import an existing Postman, Insomnia, or OpenAPI collection and get started instantly.

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134k