Top 9 Open-Source Alternatives to Mulesoft API Portal

Mulesoft API Portal

Anypoint API Portal takes the guesswork out of onboarding by providing a centralized place for developers to find docs, tutorials, snippets and API examples.

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Product categories

API API Clients API Design API Gateway API Management API Testing API Tools APIs Developer APIs Developer Tools Monitoring Tools Web Service Automation

Summary

The top open-source alternatives to Mulesoft API Portal are Postman, StopLight, and Moesif. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

Postman Landing Page
1

Postman

The Collaboration Platform for API Development
Pricing:
- Open Source
#API Tools #Developer Tools #APIs 30 social mentions
StopLight Landing Page
2

StopLight

Stoplight is an API Design, Development, and Documentation platform that enables consistency, reusability, and quality in your API lifecycle, all with an easy, enjoyable developer experience.
Pricing:
- Open Source
- Freemium
- Free Trial
#API #API Tools #API Management 30 social mentions
Moesif Landing Page
3

Moesif

Grow and Monetize API Products
Pricing:
- Open Source
- Freemium
- Free Trial
#API Tools #Recurring Billing #Web Analytics 1 social mentions
Treblle Landing Page
4

Treblle

End to End APIOps Platform
Pricing:
- Open Source
- Freemium
- Free Trial
- $25.0 / Monthly (For 1 Workspace, 1 API, 250,000 Requests / mo)
#API Tools #Error Tracking #Realtime Backend / API 27 social mentions
Gravitee.io Landing Page
5

Gravitee.io

Gravitee.io is a flexible, lightweight and an open source API management solution.
Pricing:
- Open Source
- Freemium
- Free Trial
#API Tools #Monitoring Tools #API Management 4 social mentions
Google Cloud Endpoints Landing Page
6

Google Cloud Endpoints

Google Cloud Endpoints provides the tools to develop, deploy, protect and monitor your APIs.
Pricing:
- Open Source
#API Tools #API Management #Web Service Automation 4 social mentions
Insomnia REST Landing Page
7

Insomnia REST

Design, debug, test, and mock APIs locally, on Git, or cloud. Build better APIs collaboratively for the most popular protocols with a dev‑friendly UI, built-in automation, and an extensible plugin ecosystem.
Pricing:
- Open Source
#API #API Tools #Developer Tools 129 social mentions
Hoppscotch Landing Page
8

Hoppscotch

Open source API development ecosystem
Pricing:
- Open Source
- Freemium
- Free Trial
#Productivity #API Tools #Developer Tools 90 social mentions
Django REST framework Landing Page
9

Django REST framework

Django REST framework is a toolkit for building web APIs.
Pricing:
- Open Source
#API Tools #API Management #Web Service Automation 3 social mentions