Portable Proxyman Pro 3.14.1

Proxyman Portable is a high-performance, native debugging proxy application engineered for macOS, Windows, and Linux developers who need to capture, inspect, modify, and mock HTTP/HTTPS/WebSocket traffic from web applications, iOS/Android simulators, physical mobile devices, backend servers, and desktop programs with surgical precision and minimal setup overhead.

Designed as a modern alternative to legacy tools like Charles Proxy and Fiddler, this lightweight yet feature-complete proxy server operates as an invisible man-in-the-middle, intercepting network requests in real-time to provide human-readable breakdowns of headers, bodies (JSON/XML/HTML syntax highlighted), query parameters, cookies, response codes, timings, and sizes—enabling frontend engineers to debug API contracts, backend developers to trace integration issues, mobile teams to profile app performance, and QA specialists to simulate edge-case network conditions without complex configuration or system-wide proxy conflicts.

With zero-setup Terminal integration for Node.js/Python/Ruby servers, one-click iOS trust certificates, advanced scripting for dynamic response manipulation, collaborative session sharing, and enterprise-grade filtering across thousands of concurrent requests per second, Proxyman Portable accelerates development cycles by 3-5x through intuitive visualizations, breakpoint debugging, and automation capabilities that transform opaque network behavior into actionable insights, all running locally with full SSL/TLS decryption and no cloud dependencies.

Core Proxy Engine and Traffic Capture

Proxyman Portable’s foundation rests on a high-throughput, multi-threaded proxy core optimized for modern networking stacks, handling 10,000+ requests/second on M1/M2 Apple Silicon or Intel i9 systems with sub-millisecond latency overhead. Launching to a clean dashboard, it auto-configures as the system proxy (macOS Network Preferences, Windows Settings, Linux env vars) or provides one-click scripts for app-specific routing—export http_proxy=http://127.0.0.1:9090 for terminals, iOS Simulator auto-detection via iproxy, Android ADB forwarding (adb reverse tcp:8080 tcp:9090). Unlike browser-only inspectors, Proxyman Portable captures traffic from any HTTP client: cURL, Postman, Xcode, Android Studio, VS Code extensions, Docker containers, even hardware IoT devices via WiFi hotspot proxying.

SSL interception employs dynamically generated root certificates (trusted via Settings→Install Certificate), decrypting HTTPS seamlessly without “certificate pinning” bypasses for most apps. Dual-mode capture—Capture All for comprehensive logging or Domain Filter (e.g., api.myapp.com/**)—prevents log bloat, with intelligent deduplication collapsing duplicate GraphQL queries or polling endpoints. Real-time waterfall charts visualize load sequences, latency budgets (DNS→Connect→Send→Wait→Receive), and throughput bottlenecks, color-coded by status (green 2xx, orange 4xx, red 5xx).

Request/Response Inspector and Syntax Intelligence

The flagship Traffic Table presents a sortable, filterable grid of captured flows: columns for Method/URL/Status/Protocol/Size/Time, with inline search (Ctrl+F for “userId=123”) and regex patterns (/auth\/v\d+/). Clicking reveals the Inspector Pane—tabbed views dissecting every aspect:

Overview: Summary cards (Response Time: 245ms, Size: 12.4KB, Protocol: h2), timing waterfalls, SSL details (cipher suite, handshake duration).

Request/Response Headers: Foldable lists with editable previews, common headers highlighted (Authorization Bearer tokens tokenized for security), duplicate detection.

Body Viewer: Syntax-highlighted rendering for 50+ formats—JSON tree expansion/collapse, XML structure validation, HTML DOM preview, Protobuf/MessagePack binary decoding, GraphQL introspection schemas. Beauty formatting (prettify/minify), diff viewer for sequential requests.

Query/Cookies/Form Data: Parsed tables with decode (Base64/URL), search across all params.

Hex/Timeline: Raw bytes for forensics, frame-by-frame waterfalls.

Custom columns add derived metrics (cache-control max-age parsing, content-type MIME detection), while Color Rules tag domains (green=internal APIs, red=third-party trackers).

Advanced Manipulation: Map Local/Remote, Breakpoints, Scripting

Proxyman Portable’s manipulation arsenal elevates it beyond inspection:

Map Local overrides API responses with static files/directories—serve mock-users.json for /api/users during frontend development, auto-updating on file changes. Supports dynamic paths (/api/v1/users/:id → local/users/{id}.json).

Map Remote proxies to alternate backends (staging.api.com → prod.api.com) for A/B testing or canary deployments.

Breakpoints pause requests mid-flight, enabling live editing: modify headers (X-API-Key: fake), rewrite bodies (JSONPath $.user.email = "[email protected]"), delay responses (simulate 5G latency), or abort entirely. Chained breakpoints create request-response workflows.

Scripting Engine (JavaScript/WebAssembly) injects custom logic: if (req.url.includes('/login')) { req.headers['X-Device-ID'] = generateUUID(); return req; }. 100+ built-in snippets (JWT signing, CORS headers, rate limiting).

Repeat/Compose replays captured requests with modifications, or crafts new ones from templates—perfect for load testing endpoints.

Mobile Device and Simulator Integration

iOS/Android debugging shines: iOS Simulator auto-configures via xcrun simctl commands; Physical Devices generate QR codes for one-tap proxy setup (Settings > WiFi > Configure Proxy > Manual). Android supports emulator bridging and adb shell settings put global http_proxy 192.168.1.x:9090. Certificate trust streamlined—iOS via Settings profile install, Android user/system certs.

Wireless Debugging eliminates USB tethers, capturing Safari/Chrome/SwiftUI/React Native traffic natively. Domain isolation (app.mycompany.com only) prevents cross-contamination.

WebSocket and gRPC Support

Full WebSocket Inspector displays message streams chronologically, with editable payloads and breakpoint insertion mid-connection. gRPC Transcoding converts binary protobufs to JSON, preserving metadata and streaming bidirectional RPCs.

Filtering, Search, and Analytics

Enterprise-grade filtering combines 20+ conditions: status:>=400 && method:POST && size>1MB && !domain:cdn.*, saved as Filter Sets (shareable .pmf files). Timeline Filter isolates slow requests (>500ms). Analytics Dashboard aggregates metrics—error rates by endpoint, payload bloat rankings, caching efficacy—exportable CSV/PDF.

Search Everything indexes across all traffic: headers (Authorization: Bearer eyJ), bodies ("userId":12345), comments (user-added notes).

Collaboration and Session Management

Session Sharing exports filtered captures as encrypted .pmarchive files—teammates replay exact scenarios without proxy setup. Team Mode (Pro) syncs configurations via cloud (domains, breakpoints, scripts). Import/Export Charles/Fiddler HAR files bidirectionally.

External Proxy Chaining forwards to upstream proxies (corporate firewalls, Burp Suite), PAC file support.

Network Simulation and Performance Testing

Network Conditions throttles bandwidth (3G/4G/5G presets), adds packet loss (0.1-20%), jitter (20-500ms), or DNS latency—stress-test SPAs under mobile conditions. No Caching forces fresh responses, Block URL Lists simulate outages.

UI/UX Excellence

Native Cocoa/Electron interface scales to 8K displays, dark/light themes, resizable columns, freeze panes. Multiple Windows monitor iOS/Android/web simultaneously. Keyboard-Driven (J/K arrow navigation, Cmd+F search, Space replay).

Finder Integration: Drag .pmarchive sessions to Dock for instant replay.

Scripting and Automation API

REST API (/api/v1/clear, /api/v1/rules) integrates with CI/CD—Jenkins jobs validate API contracts automatically. AppleScript automates macOS workflows.

Enterprise Features

Multiple Listeners (port 9090 iOS, 9091 backend), ACLs by IP/domain, Audit Logs (immutable request histories), SSO/SAML, team dashboards.

Performance Benchmarks

M2 Max: 15,000 req/s, 50ms overhead. 100k request sessions load in 2s.

Supported Protocols/Clients

HTTP/1.1-3, HTTPS, HTTP/2, QUIC h3, WebSockets, gRPC, SSH tunneling. Browsers (Chrome/Safari/Firefox), mobile (iOS 12+, Android 7+), servers (Express/Django/Flask), CLI (cURL/axios/fetch).

Privacy and Security

Local-only processing, ephemeral certs, token masking, GDPR-compliant logging.

Use Cases

Frontend: Mock APIs, CORS debugging, GraphQL introspection.
Backend: Integration testing, slow query hunting.
Mobile: Network profiling, certificate issues.
DevOps: Canary validation, load simulation.