Exploring 7 Open-Source Libraries You Should Acquaint Yourself With by 2023

6. Hoppscotch

An alternative to Postman is the open source API development ecosystem.

• Customizable User Interface: Select themes, accent colors, and the Zen mode to block out any other noise. Your personalized themes will sync with local or cloud sessions.
• Capabilities for advanced requests different HTTP methods, WebSocket, Server-Sent Events, Socket.IO, MQTT, and GraphQL are supported. Create request code snippets using the cURL importer.
• Detailed Authorization Options: Supports OAuth 2.0, OIDC Access Token/PKCE, Bearer Token, Basic, and OAuth 2.0. Custom request parameters and headers can be set.
• Working together and synchronizing Sync data in real-time across numerous devices, collaborate with an infinite number of teams and members, and share collections.

Link: https://github.com/hoppscotch/hoppscotch