The most intuitive desktop API client

Organize and execute REST, GraphQL, and gRPC requests in a simple and intuitive app.
Yaak is a desktop API client for organizing and executing REST, GraphQL, and gRPC requests. It's built using Tauri, Rust, and ReactJS.

• Yaak @ GitHub.

The modern API client that lives in your terminal. A powerful HTTP client that lives in your terminal.

Posting is an HTTP client, not unlike Postman and Insomnia. As a TUI application, it can be used over SSH and enables efficient keyboard-centric workflows. Your requests are stored locally in simple YAML files, meaning they're easy to read and version control.

Best API Marketplace. Reliable, Scalable APIs

Discover, integrate, and empower your applications with our
API marketplace. Explore a wide range of APIs, from payment gateways to
social media integrations.

A collective list of free APIs

• Public APIs @ GitHub.

ATAC is Arguably a Terminal API Client. It is based on well known clients such as Postman, Insomnia or even Bruno, but inside your terminal without any specific graphical environment needed.

The philosophy of ATAC is to be free, account-less and offline for now and forever.

• ATAC @ GitHub.

Open source API development ecosystem.

• Hoppscotch @ GitHub.
• Hoppscotch documentation.

Fast, Git Friendly API Client

Bruno is a new and innovative open source API client, aimed at revolutionizing the status quo represented by Postman, Insomnia and similar tools out there.

Bruno stores your collections directly in a folder on your filesystem. We use a plain text markup language, Bru, to save information about API requests.

• Bruno @ GitHub.
• Dites adieu à Postman grâce à Bruno qui vous aidera à concevoir les meilleurs API de l’univers @ Korben :fr:.

Design API Specifications.

Leverage OpenAPI to accelerate your teams with a spec-driven design-first approach to API development.

Insomnia is an open-source, cross-platform API client for GraphQL, REST, WebSockets and gRPC.

Insomnia @ GitHub.

Open source API development ecosystem

Offline-first web HTTP client.
Usefull for REST API debug, alternative to Postman.