ProxyBridge is a lightweight, open-source universal proxy client designed for transparent proxy routing of TCP and UDP traffic on Windows and macOS. It allows users to redirect network traffic from specific applications through SOCKS5 or HTTP proxies, enabling process-based control over internet access.
Key Features:
Cross-platform support for both Windows and macOS.
Process-based traffic control: route, block, or allow traffic per application.
System-level interception without requiring app configuration changes.
Full support for TCP and UDP protocols.
Flexible rule configurations with wildcard support for IPs, ports, and hostnames.
GUI and CLI interfaces for versatile use cases.
Ideal for cybersecurity professionals, network administrators, and developers to analyze or control application traffic.
README
ProxyBridge
ProxyBridge is a lightweight, open-source universal proxy client (Proxifier alternative) that provides transparent proxy routing for applications on Windows, macOS, and Linux. It redirects TCP and UDP traffic from specific processes through SOCKS5 or HTTP proxies, with the ability to route, block, or allow traffic on a per-application basis. ProxyBridge fully supports both TCP and UDP proxy routing and works at the system level, making it compatible with proxy-unaware applications without requiring any configuration changes.
> [!TIP]
> ProxyBridge routes your traffic - InterceptSuite lets you see inside it.
> Full MITM proxy with SSL/TLS inspection, live request editing, scripting, and support for TCP, UDP, StartTLS, DTLS and more. Built by the same team. Try InterceptSuite →
> [!WARNING]
> The winget package is community-maintained and not official. It may lag behind releases or be unverified. For guaranteed-latest, verified builds always use the Official Download Page.
> [!NOTE]
> For historical versions, change logs, and direct access to raw assets, visit the GitHub Releases page.
Features
Cross-platform - Available for Windows, macOS and Linux
Dual interface - Feature-rich GUI and powerful CLI for all use cases
Process-based traffic control - Route, block, or allow traffic for specific applications
Universal compatibility - Works with proxy-unaware applications
Multiple proxy protocols - Supports SOCKS5 and HTTP proxies
System-level interception - Reliable packet capture at kernel/network extension level
No configuration needed - Applications work without any modifications
Protocol agnostic - Compatible with TCP and UDP protocols (HTTP/HTTPS, HTTP/3, databases, RDP, SSH, games, DTLS, DNS, etc.)
Traffic blocking - Block specific applications from accessing the internet or any network (LAN, localhost, etc.)
Flexible rules - Direct connection, proxy routing, or complete blocking per process
Advanced rule configuration - Target specific processes, IPs, ports, protocols (TCP/UDP), and hostnames with wildcard support - full IPv4 and IPv6 support on Windows
Process exclusion - Prevent proxy loops by excluding proxy applications
Import/Export rules - Share rule configurations across systems with JSON-based import/export
> [!CAUTION]
> Beware of Fake ProxyBridge Downloads
>
> Multiple fake ProxyBridge download sources have been identified. Some of these sources distribute unwanted binaries and malicious software.
>
> ❌ Do NOT download ProxyBridge from any third-party or unofficial sources.
>
> ✅ Official ProxyBridge sources (only):
> - GitHub Repository: https://github.com/InterceptSuite/ProxyBridge/
> - Official Website: https://interceptsuite.com/download/proxybridge
>
> If you prefer not to use prebuilt binaries, you may safely build ProxyBridge yourself by following the Contribution Guide and compiling directly from the official source code.
>
> ProxyBridge does not communicate with any external servers except its own update feed at https://download.interceptsuite.com/proxybridge.json for update checks (triggered only on app launch or manual update checks);
Documentation
> [!IMPORTANT]
> 📖 Full Documentation
>
> Everything you need to get started and go deep:
> - Installation and setup guides
> - Proxy rules and rule configuration
> - CLI reference
> - UDP, IPv6, HTTP/3, DTLS setup
> - Troubleshooting and advanced usage
>
> interceptsuite.com/docs/proxybridge
Screenshots
macOS
ProxyBridge GUI - Main Interface
Proxy Settings Configuration
Proxy Rules Management
Add/Edit Proxy Rule
Windows
GUI
ProxyBridge GUI - Main Interface
Proxy Settings Configuration
Proxy Rules Management
Proxy Tester
CLI
ProxyBridge CLI Interface
Linux
GUI
ProxyBridge GUI - Main Interface
Proxy Settings Configuration
Proxy Rules Management
Add/Edit Proxy Rule
CLI
ProxyBridge CLI Interface
Use Cases
Redirect proxy-unaware applications (games, desktop apps) through InterceptSuite/Burp Suite for security testing
Route specific applications through Tor, SOCKS5 or HTTP proxies
Intercept and analyze traffic from applications that don't support proxy configuration
Test application behavior under different network conditions
Analyze protocols and communication patterns
InterceptSuite
ProxyBridge is a proxy client - it routes your application traffic through any SOCKS5 or HTTP proxy. It does not inspect or modify the traffic itself.
InterceptSuite is a MITM SOCKS5 proxy server built for traffic interception and analysis. Point ProxyBridge at InterceptSuite and you can inspect everything:
Full TLS/SSL interception and certificate spoofing
TCP, UDP, StartTLS, DTLS traffic analysis
Live request and response editing
Scripting and automation
ProxyBridge routes the traffic in. InterceptSuite sees inside it.
Windows Implementation:
This project is built on top of WinDivert by basil00. WinDivert is a powerful Windows packet capture and manipulation library that makes kernel-level packet interception possible. Special thanks to the WinDivert project for providing such a robust foundation.
The Windows GUI and CLI are written in native C using the Win32 API, keeping the footprint small and startup instant.
macOS Implementation:
Built using Apple's Network Extension framework for transparent proxy capabilities on macOS.
Linux Implementation:
Built using Linux Netfilter NFQUEUE for kernel-level packet interception and iptables for traffic redirection. The GUI uses GTK3 for native Linux desktop integration.
