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Open Source Projects tagged "Openapi"

A curated collection of the best open source projects tagged "Openapi". Each listing includes a website screenshot along with a detailed review of its features.

Open WebUI

AI
One interface for every AI model you run or connect

  • Stars

    157,269

  • Last commit

    3 hours ago

  • License

    BSD-3-Clause
Self-hosted AI platform that connects local and cloud models, extends with Python, and keeps your data under your control.

Open Source Alternative to:

Claude

Bruno

Lightweight, fast, and open-source API client for developers

  • Stars

    47,954

  • Last commit

    8 hours ago

  • License

    MIT
A modern, user-friendly API client that simplifies API testing and development with a clean interface and powerful features.

Open Source Alternative to:

Postman

Apache APISIX

High-performance API gateway with built-in LLM support

  • Stars

    17,275

  • Last commit

    16 hours ago

  • License

    Apache-2.0
Apache APISIX is an open-source API gateway built on NGINX and etcd, offering dynamic routing, 100+ plugins, load balancing, authentication, and traffic management for APIs and LLM workloads.

Open Source Alternative to:

Kong

Scalar

Open-source API documentation and testing platform

  • Stars

    16,350

  • Last commit

    3 hours ago

  • License

    MIT
Scalar is an open-source tool for building, customizing, and hosting interactive API documentation with OpenAPI support.

Open Source Alternative to:

Postman

Mockoon

Effortless API mocking for seamless development

  • Stars

    8,465

  • Last commit

    14 hours ago

  • License

    MIT
Create, run, and share mock REST APIs without coding. Boost productivity with an intuitive interface and powerful features.

Open Source Alternative to:

Postman

Tracecat

AI
Open source security automation platform for builders

  • Stars

    3,877

  • Last commit

    3 hours ago

  • License

    AGPL-3.0
Tracecat is a scalable, self-hostable platform for automating security workflows and playbooks without limits.

Open Source Alternative to:

Splunk

Voiden

Build APIs like code with Git-native workspace

  • Stars

    Stars growing over the last 30 days1,967

  • Last commit

    1 day ago

  • License

    Apache-2.0
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

Fusio

API management platform for developers and AI agents

  • Stars

    2,128

  • Last commit

    4 days ago

  • License

    Apache-2.0
Open source API management platform that exposes databases as REST, routes microservice traffic, handles billing, and generates SDKs across multiple languages.

Open Source Alternative to:

Postman

Busabase

AI
A verified workspace where AI agents store and build knowledge

  • Stars

    Stars growing quickly over the last 30 days637

  • Last commit

    7 hours ago

  • License

    MIT
Busabase gives AI agents a shared database, knowledge base, and skills registry where every proposed change goes through human review before becoming canonical data.

Open Source Alternative to:

Notion

xyd

Transform documentation with developer-focused simplicity

  • Stars

    115

  • Last commit

    2 days ago

  • License

    MIT
Create powerful, interactive documentation with hot reloading, TypeScript support, custom components, and built-in API docs generation.

Open Source Alternative to:

Mintlify
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