The most intuitive desktop API client. Organize and execute REST, GraphQL, WebSockets, Server Sent Events, and gRPC.
Publisher’s description
What is Yaak?
Yaak is an open-source api & web development program for Windows from Mountain Loop Labs. It ranks 5th by popularity among api & web development in this catalogue. It is written in TypeScript.
Installation and requirements
Official installers exist for 64-bit as EXE (NSIS). It can be installed for the current user only, without administrator rights. The installer supports unattended (silent) installation.
Updates and version history
The current version is 2026.9.0, released on October 10, 2026. 45 versions are listed since February 8, 2025, each with links to its own installer files. That is about 27 releases a year. The last update is less than a month old.
Popularity and file types
The Chocolatey package has been downloaded 19,164 times. The source code on GitHub (mountain-loop/yaak) has 19,346 stars. Similar programs include Insomnia, Bruno and HTTPie.
Project description on GitHub: “The most intuitive desktop API client. Organize and execute REST, GraphQL, WebSockets, Server Sent Events, and gRPC 🦬”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Documented silent install
- Installs without administrator rights
- Frequent updates (about 27 a year)
- Large user base
Cons
- No native ARM64 build
In short: Yaak is an open-source api & web development tool for 64-bit PCs. It is actively maintained. Administrators can deploy it unattended.
Is Yaak safe to download?
- The file is served by github.com, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
AF45E72C91B86B9D005D477F9E87B03D4B7310001E26362ABF1F97418FA1D720· Open the VirusTotal report for this hash - The link has not been checked yet
- The source code is public
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 45 versions ›45 versions over 2 years · about 27 a year
| Version | Date | Size | Files |
|---|---|---|---|
| 2026.9.0Latest | October 10, 2026 | — | 64-bit EXE (NSIS) |
| 2026.8.1 | September 23, 2026 | — | 64-bit EXE (NSIS) |
| 2026.8.0 | September 17, 2026 | — | 64-bit EXE (NSIS) |
| 2026.7.1 | September 1, 2026 | — | 64-bit EXE (NSIS) |
| 2026.7.0 | August 30, 2026 | — | 64-bit EXE (NSIS) |
| 2026.6.0 | August 14, 2026 | — | 64-bit EXE (NSIS) |
| 2026.5.0 | May 19, 2026 | — | 64-bit EXE (NSIS) |
| 2026.4.0 | May 19, 2026 | — | 64-bit EXE (NSIS) |
Install from the command line
Silent install ›winget install --id Yaak.app -echoco install yaak -yYaak_2026.9.0_x64-setup.exe /SRelated guide: How to use winget: install and update apps
Information
- Publisher
- Mountain Loop Labs
- Category
- API & web development
- Licence
- MIT
- Price
- Free
- Source code
- github.com/mountain-loop/yaak
- Written in
- TypeScript
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- EXE (NSIS)
- Version
- 2026.9.0
- Released
- October 10, 2026
- Added to the catalogue
- February 11, 2025
- Versions listed
- 45
- Updates / year
- 27
- Chocolatey downloads
- 19,164
- GitHub stars
- 19,346
- GitHub forks
- 835
- Website
- github.com
- winget ID
- Yaak.app
- Chocolatey package
- yaak
Ratings and reviews
No reviews yet. Be the first to rate it.
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Frequently asked questions
Is Yaak free?
Yes. Yaak is open-source software under the MIT licence.
Is Yaak safe to download?
The download comes from github.com, which belongs to the publisher; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install Yaak with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Can Yaak be installed silently?
Yes. The silent install page lists the exact command for each installer.
Does Yaak run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit version through emulation.
Where can I download an older version of Yaak?
The versions page lists all 45 versions with links to their official installer files, back to February 8, 2025.
Can I use Yaak without administrator rights?
Yes, there is a per-user installer that does not need administrator rights.
What are alternatives to Yaak?
Insomnia, Bruno, HTTPie, Altair GraphQL Client and RenderDoc. The alternatives page compares them.
