Mediator vs ProxyHawk

Mediator is a free, open-source desktop proxy for debugging gRPC traffic on Linux, macOS and Windows. It can redirect requests to beta or test servers without changes to client code. When an API schema is available, it parses gRPC requests and responses and presents binary messages as a JSON tree. Schemas can come from server reflection, proto source roots compiled with protoc, or FileDescriptorSet files. Matching server rules also allow gRPC and HTTPS decoding after the client installs the root certificate generated by that Mediator installation. Certificates are available in DER and PEM formats, and another installation requires its own certificate. The proxy listens on port 8888 by default. Downloads include Windows MSI, macOS DMG, Apple Silicon macOS DMG and Linux deb packages. Setup examples cover Java, Objective-C/iOS and Go clients. The repository identifies Apache-2.0 as its license.

ProxyHawk is a native macOS proxy debugger for capturing and inspecting HTTP traffic from Mac apps, iPhones, iOS Simulator, Android devices, and Android emulators. Mobile traffic routes through the Mac, where capture and display happen locally without uploading HTTP content to a vendor cloud. Its API Client composes and replays requests, imports cURL, and exports Postman collections with environment variables. API Guard checks responses for removed fields, changed types, and missing array items, and can alert through Slack and email. Other tools include breakpoints, block rules, local and remote mapping, scripts, network throttling, request and response editing, and response mocking. Shared sessions strip Authorization headers, cookies, and tokens client-side; links expire after seven days. ProxyHawk requires macOS 13 or later and has no Windows or Linux version. The Free plan captures up to 500 requests per day but excludes SSL/TLS decryption, breakpoints, block rules, scripting, and mapping. Paid plans start at ₹417/mo, and a free trial is offered.