About

Advanced REST Client (ARC) is a free and open-source API testing tool, originating from Poland, specifically designed for web developers to create and test custom HTTP requests. As an Electron-based web tool, it offers a comprehensive product portfolio of features including full headers control, robust REST API support, and the unique ability to synchronize data with Google Drive. It is widely accessible across various platforms such as Mac, Windows, Linux, Chrome OS, and as a Google Chrome/Chromium extension. While it holds a strong market position in API testing, a user review highlights a current limitation: it does not provide a way to test WebSockets, a feature offered by competitors like Postman. The project maintains an active open-source community and development on GitHub (github.com/advanced-rest-client/arc-electron).