Kong/insomnia ? reverse-engineered prompt

Build me a cross-platform desktop app to help developers work with APIs. It should be a competitor to Postman. The main goal is to create a powerful, open-source API client that supports modern protocols beyond just REST, including GraphQL, WebSockets, gRPC, and Server-Sent Events.

Users need to be able to create, organize, and debug API requests. It should also include tools for designing APIs with an OpenAPI editor and a way to create and run automated tests.

A critical feature is flexible data storage. Give users three options: saving everything completely locally on their computer, syncing their projects with a third-party Git repository, or using a cloud sync option for team collaboration. It should be built as a modern desktop application for Mac, Windows, and Linux.