Open source free capture HTTP(S) traffic software ProxyPin
ProxyPin is a full-featured, cross-platform HTTP(S) traffic capture and proxy tool. Developed in Flutter, it enables interception, inspection, rewriting, and blocking of network traffic across devices via scans and QR-based connection. It supports scripting, filtering, statistics, and integrates HTTP/2, zstd, WebSocket parsing, and AES tools.
...It wraps the URLSession API among others in an easy-to-use interface and provides additional functionality required of modern application development using HTTP networking.
Alamofire offers plenty of features, including Chainable Request / Response Methods, URL / JSON Parameter Encoding, Authentication with URLCredential, and HTTP Response Validation. Additional component libraries by the Alamofire Software Foundation also bring additional functionality to the Alamofire ecosystem.