Best Open Source API Clients using Lucide Icons in 2026

Hoppscotch

Sleek, intuitive API development and testing platform

Stars
79,007
Forks
5,821
Last commit
4 hours ago

Lightweight, fast, and feature-rich API client for developers. Test, debug, and document APIs with ease in a clean, modern interface.

Open Source Alternative to:

Postman

Yaak

Fast, secure, offline API client with Git integration

Stars
18,456
Forks
740
Last commit
7 days ago

A modern API client offering local-only data storage, Git integration, plugin extensibility, and multi-protocol support for developers.

Open Source Alternative to:

Postman

Firecamp

Unified API development ecosystem for modern teams

Stars
2,589
Forks
166
Last commit
2 months ago

All-in-one platform for API testing, documentation, and collaboration, simplifying the entire API development lifecycle.

Open Source Alternative to:

Postman

Voiden

Build APIs like code with Git-native workspace

Stars
827
Forks
25
Last commit
7 hours ago

Offline-first API workspace that unifies specs, docs, tests, and mocks in programmable Markdown blocks. Version control everything in plain text files.

Open Source Alternative to:

Postman

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Hoppscotch

Sleek, intuitive API development and testing platform

Stars
79,007
Forks
5,821
Last commit
4 hours ago

Lightweight, fast, and feature-rich API client for developers. Test, debug, and document APIs with ease in a clean, modern interface.

Open Source Alternative to:

Postman

Yaak

Fast, secure, offline API client with Git integration

Stars
18,456
Forks
740
Last commit
7 days ago

A modern API client offering local-only data storage, Git integration, plugin extensibility, and multi-protocol support for developers.

Open Source Alternative to:

Postman

Firecamp

Unified API development ecosystem for modern teams

Stars
2,589
Forks
166
Last commit
2 months ago

All-in-one platform for API testing, documentation, and collaboration, simplifying the entire API development lifecycle.

Open Source Alternative to:

Postman

Voiden

Build APIs like code with Git-native workspace

Stars
827
Forks
25
Last commit
7 hours ago

Offline-first API workspace that unifies specs, docs, tests, and mocks in programmable Markdown blocks. Version control everything in plain text files.

Open Source Alternative to:

Postman

Open Source API Clients using Lucide Icons

A curated collection of the best open source client applications for interacting with and testing APIs. using Lucide Icons.