The API client you'll actually enjoy

Yaak is a fast, secure, and offline API client that works with Git.

Download

104k

Open Source

Available for Mac, Windows, and Linux

Fast and private

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

Works with Git

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

Extend with Plugins

Flexible plugins for auth, template functions, and more.

Developer friendly

Work in the ways you're already used to.

Powerful when you need it

Yaak's 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

Rich previews

Import/export

Paste Curl

Copy as Curl

Streaming

Git UI

Command palette

Autocomplete

Request docs

Constantly improving

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

2026.1.0	Request Debugging, Customizable Hotkeys, and 30 New Themes
2025.9.0	1Password, NTLM Auth, and Better Git Compatibility
2025.8.0	Sidebar Filtering, Environment Ordering, and Better Postman Imports
2025.7.0	Superpowered Sidebar, AWS Auth, and Postman Environment Import
2025.6.0	Folder Variables, Keychain Function, and Layout Toggle
2025.5.0	Plugin Directory, GraphQL Doc Explorer, and Run Button
2025.4.0	Environment Colors, Custom Fonts, and Colored HTTP Methods
2025.3.0	Folder Inheritance, and More Template Functions

View Roadmap

Trusted by developers

Modern, offline, open source, Git friendly, and extensible. What's not to love?

Rhys

i finally started properly using Yaak today rather than just pasting curl requests in and it's a delightful piece of software.

KindMonitor6206

I like the feature where you can paste in curl examples and it formats it right into the client for use. The guy who made Insomnia started Yaak.

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

Kevin Cunningham

I think this is my favourite for now. A clean and simple interface, focused on the core activities. It's local first and doesn't need an account.

Abhay Salvi

I am already in love with it by using it for 5 min. This is insane!!! I shared it within my company and now I am going to evangelize Yaak to everyone 🥹

Nir Galon

After testing countless others that either lacked features or tried to dazzle with needless AI, Yaak stands out as a true masterpiece. 🙌

Kos Komelin

Got fed up with bloated API clients, so gave @yaakapp a try. Removed others from my computer immediately after that.

Faraz Patankar

My go-to tool for testing APIs as I build them. The interface is clean and much nicer to use than bloated alternatives like Insomnia and Postman.

Elias

When I was looking for a clean and simple API client a few months ago, I came across Yaak ... I just love clean UI and lack of clutter.

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

Alex Yumashev

Yaak is my new favorite REST client P.S. Ironically, made by the same guy who built Insomnia, sold it, now making a new one 🤣🤣

sauce

Seems like @yaakapp is the first true replacement for Postman with feature parity ... Simple, fast, beautiful and NO LOGIN POPUPS 😫🥹

Bishal Roy

yaak is the best postman alternative i have ever used. it's feature rich and also looks so gorgeous

EGOIST

Yaak is now my first choice for API testing, light-weight yet powerful ✅ (powered by @TauriApps again)

Mubashir

Yaak is the best API client out there 🔥 I love the clean simple UI which is not bloated but still does a lot ♥️ ... Syncs your workspace with Git 👏

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.

Still not convinced?

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