Contains a useful object model for OpenAPI documents in .NET along with common serialisers to extract raw OpenAPI JSON and YAML documents from the model.
Publisher’s description
What is OpenAPI.NET Hidi?
OpenAPI.NET Hidi by Microsoft is open-source Windows software in the api & web development category. It is written in C#.
Installation and requirements
The publisher provides Portable installers for 64-bit Windows. It runs without installation (portable).
Updates and version history
The current version is 3.10.2.0, released on August 20, 2026. The version history goes back to January 14, 2026: 2 releases, all linked to the official files.
Popularity and file types
The source code on GitHub (microsoft/OpenAPI.NET) has 1,611 stars. Similar programs include Bruno, Insomnia and Yaak.
Project description on GitHub: “The OpenAPI.NET SDK contains a useful object model for OpenAPI documents in .NET along with common serializers to extract raw OpenAPI JSON and YAML documents from the model.”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Portable: runs without installation
Cons
- No native ARM64 build
In short: OpenAPI.NET Hidi is an open-source api & web development tool for 64-bit PCs.
Is OpenAPI.NET Hidi 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:
A7937857FFB5FABA18AB5C43B9E71ED3962781E63564AB83B28F7BA23E7CC18A· 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 2 versions ›| Version | Date | Size | Files |
|---|---|---|---|
| 3.10.2.0Latest | August 20, 2026 | — | 64-bit Portable |
| 3.1.2.0 | January 14, 2026 | — | 64-bit Portable |
Install from the command line
Silent install ›winget install --id Microsoft.OpenAPI.Hidi -eProgram files (.exe): hidi.exe
Related guide: How to use winget: install and update apps
Information
- Publisher
- Microsoft
- Category
- API & web development
- Licence
- MIT
- Price
- Free
- Source code
- github.com/microsoft/OpenAPI.NET
- Written in
- C#
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- Portable
- Version
- 3.10.2.0
- Released
- August 20, 2026
- Added to the catalogue
- January 14, 2026
- Versions listed
- 2
- GitHub stars
- 1,611
- GitHub forks
- 292
- Website
- github.com
- winget ID
- Microsoft.OpenAPI.Hidi
Ratings and reviews
No reviews yet. Be the first to rate it.
Alternatives to OpenAPI.NET Hidi
See all ›-
Bruno4.3.0Opensource IDE For Exploring and Testing API's (lightweight alternative to Postman/Insomnia)Open source120.8K ↓ -
Open source153K ↓ -
Yaak2026.9.0The most intuitive desktop API client. Organize and execute REST, GraphQL, WebSockets, Server Sent Events, and gRPC.Open source19.2K ↓ -
Open source4.9K ↓ -
HTTPie2025.2.0HTTPie for Web & Desktop — cross-platform API testing client for humans. Painlessly test REST, GraphQL, and HTTP APIs.Free65.8K ↓ -
Open source20.1K ↓ -
Open source6.2K ↓ -
ResponsivelyApp1.18.0A modified browser built using Electron that helps in responsive web development.Open source7.4K ↓
Frequently asked questions
Is OpenAPI.NET Hidi free?
Yes. OpenAPI.NET Hidi is open-source software under the MIT licence.
Is OpenAPI.NET Hidi 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 OpenAPI.NET Hidi 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.
Does OpenAPI.NET Hidi 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 OpenAPI.NET Hidi?
The versions page lists all 2 versions with links to their official installer files, back to January 14, 2026.
Can I use OpenAPI.NET Hidi without administrator rights?
Yes, it is portable: unpack and run it.
What are alternatives to OpenAPI.NET Hidi?
Bruno, Insomnia, Yaak, RenderDoc and HTTPie. The alternatives page compares them.
