
Ocelot is a native macOS app for effortless REST API mocking. Guided by the principle "it just works," it lets developers spin up mock servers instantly without the bloat of Electron apps. It’s the perfect tool for any dev needing to simulate endpoints fast and stay in their flow. Lightweight, native, and remarkably simple.see more
Founder
Screenshots




About
For every developer working with REST APIs on macOS, the daily grind of waiting for backend services or wrestling with complex configuration files can seriously derail your momentum. That is precisely why we built Ocelot API Mocker. This isn't just another tool; it’s a commitment to keeping you in your flow. Ocelot is a beautifully native macOS application designed from the ground up with one core philosophy in mind: it just works. Forget wrestling with heavy, slow Electron wrappers or spending precious time setting up complicated server environments just to test a single endpoint. Ocelot lets you spin up fully functional, lightweight mock servers instantly. Whether you are prototyping a brand new feature, testing edge cases before the backend is ready, or ensuring your frontend handles various response codes gracefully, Ocelot provides the immediate, reliable simulation you need without ever slowing down your machine or your focus. It’s the speed and simplicity that modern development demands, delivered right to your desktop.
What truly sets Ocelot apart is its dedication to being lightweight and intuitive. We stripped away all the unnecessary bloat so you are left with pure, unadulterated functionality. Imagine needing to simulate a 404 error or a complex nested JSON response for a specific user ID. With Ocelot, this is achieved through a remarkably simple interface that respects your time. You define your required endpoints, specify the response bodies, and your mock server is live, ready to serve requests exactly as you’ve defined them. This immediate feedback loop is invaluable for accelerating development cycles. It means less context switching, fewer interruptions waiting on integration partners, and more time actually building great software. It integrates seamlessly into the macOS environment, feeling like a natural extension of your existing toolkit rather than an added burden.
If your work involves building, testing, or debugging applications that rely on consuming RESTful services, Ocelot API Mocker is poised to become an indispensable part of your daily routine. It’s built by developers, for developers, understanding that the best tools are the ones you barely notice because they perform flawlessly every single time. Stop letting external dependencies dictate your pace. Take control of your testing environment, prototype faster than ever before, and maintain that crucial state of deep work. Ocelot is the simple, native solution that finally makes API mocking effortless, allowing you to focus on the complex logic that truly matters.