Aspen

What is Aspen?

Aspen is a free API-testing native app for macOS. Built with ZERO trust in mind, there is no login required to run API tests. It is specifically made to meet the needs of testing REST APIs, and with the help of AI, instantly help with integrations by generating data models, Open API Specs and generating integration code.

Watch Aspen’s API testing and AI capabilities in action

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Why Choose Aspen?

Automate your API development

Zero Trust Policy

There is no login required to start using Aspen. It doesn’t save any data and all operations are performed locally.

AI Assisted

Use the already integrated Alfred AI to generate data models, OAS and integration code in seconds.

Search and Teamwork

You can easily search through locally stored history and share tests with third parties through an expiring link.

Made For API First Teams

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Download Aspen

The ultimate free API testing tool for macOS with AI Integration

Native macOS app

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Private by default

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AI-powered

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Blazing fast