Aspen

Aspen is a free-to-use, no logging required API testing app for macOS. 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, OAS and integration code.

Aspen is a free, native macOS app designed for blazing-fast REST API testing without requiring user login, ensuring privacy and ease of use. Its standout feature is an AI assistant named Alfred, which accelerates API integrations by generating data models, OpenAPI Specs, and integration code instantly. The app is optimized for local testing, delivering results in under a second. With the new Collections feature, Aspen enhances collaboration by allowing users to organize, import, export, and share API requests seamlessly. It supports importing from tools like Postman and exporting workflows in just a few clicks, making it ideal for teams aiming to streamline API testing and development. Aspen’s no-login, AI-powered approach makes it a powerful, user-friendly tool for developers.