FlowStorm vs PonyDebugger

FlowStorm is a tracing debugger for Clojure and ClojureScript. It records execution without requiring breakpoints or code changes, then provides tools to step through code, inspect values, explore calls and functions, and investigate exceptions. A timeline displays execution events so users can follow how instructions from different threads interleave. The debugger also supports customizable real-time visualizations and plugins for specialized ways to examine recordings. Values shown in its interface can be sent to the REPL with one click, and recordings can be analyzed using Clojure. The guide covers ClojureScript in browsers, Node.js, and React Native, as well as remote debugging configurations and integrations for Emacs through Cider Storm, VS Code, and IntelliJ IDEA. FlowStorm is free and open source at free, and is listed for Linux, macOS, Windows, and self-hosted use. Minimum requirements are JDK 17 or later and Clojure 1.10.0 or later. Vanilla FlowStorm does not support async/await introduced in ClojureScript 1.12.145; the guide points to ClojureScriptStorm as an alternative.

PonyDebugger is a free remote debugging toolset for native iOS apps. An app-side client connects to a gateway server, which presents debugging views through Chrome Developer Tools. Network traffic can be routed through a proxy for inspection in Chrome’s Network tools, including HTTPS; the client automatically proxies requests using NSURLConnection and NSURLSession. Developers can register managed object contexts and browse Core Data entities and objects, though these stores are read-only. The view hierarchy display can highlight matching views, edit displayed attributes, and remove nodes. Remote logging supports text and recursive inspection of object properties. Setup requires integrating the client and connecting it to the gateway; the quick start requires Xcode Command Line Tools. The gateway serves Chrome Developer Tools on localhost port 9000 by default, and can be configured for access from another device or computer. The iOS client requires iOS 5.0 or above. The project is Apache License 2.0; its README warns that automatic forwarding of all network traffic swizzles private API methods and should be limited to debug builds.