Open-source, free HTTP(S) traffic capture software ProxyPin supports all major platforms. You can use it to intercept, inspect, and rewrite HTTP(S) traffic. It supports capturing traffic from Flutter apps. ProxyPin is developed with Flutter, offering a beautiful and easy-to-use UI. Features - Mobile QR code connection: No need to manually configure WiFi proxy; configuration sync is included. All devices can connect by scanning a QR code and forward traffic to each other. - Domain filtering: Intercept only the traffic you need and avoid intercepting other traffic to prevent interference with other applications. - Search: Search requests by keywords, response types, and other criteria. - Script support: Write JavaScript scripts to process requests or responses. - Request rewriting: Supports redirection, replacement of request or response messages, and modification of requests or responses as needed. - Request mapping: Respond using local configurations or scripts without contacting remote services. - Request blocking: Block requests based on URL rules, preventing them from reaching the server. - History: Automatically saves captured traffic for easy tracking and viewing. Supports HAR format export and import. - Other tools: Favorites, toolbox, common encoding tools, QR code support, regular expressions, and more.