Open-source alternatives to Anyproxy

Reqable is a cross-platform network debugging tool that functions as an HTTP/HTTPS debugging proxy, a REST API client, and a traffic replay tool. It captures, inspects, and modifies live traffic using a local MITM proxy engine, supports VPN tunnel capture for mobile devices, and provides a Python scripting sandbox for custom traffic processing. The application is available on Windows, macOS, Linux, iOS, and Android. The tool distinguishes itself by combining traffic interception with breakpoint-based request modification, allowing users to pause live HTTP traffic for manual inspection and alt

Hetty is an HTTP intercepting proxy and web security research toolkit used to capture, inspect, and modify traffic between a browser and a server. It functions as an HTTP request editor for creating and replaying manual requests to test server behavior and as a project-based traffic logger that isolates network logs across different security research engagements. The tool provides a request-response interception loop that pauses outgoing requests and incoming responses in transit, allowing for manual editing or cancellation. It includes a manual request replay engine to construct and transmit

node-http-proxy is a Node.js HTTP proxy library and toolkit used to create programmable reverse proxies, load balancers, and traffic routers. It functions as a system for forwarding HTTP and WebSocket traffic from clients to backend target servers. The project provides capabilities for translating incoming request paths into backend addresses using programmable matching rules. It supports the creation of bidirectional tunnels to facilitate real-time communication via WebSocket proxying. The library covers the modification of request and response headers, including the rewriting of cookies an

Mitmproxy is an interactive, programmable network proxy engine designed for traffic analysis and protocol manipulation. It functions as a gateway that intercepts, inspects, and modifies network traffic in real-time, supporting HTTP, HTTPS, WebSocket, DNS, and generic TCP or UDP streams. By acting as a trusted certificate authority, the proxy can dynamically generate and sign certificates to decrypt and analyze secure TLS-encrypted connections. The project distinguishes itself through a highly extensible, event-driven architecture that allows users to automate traffic transformation using cust

Ladder is a web proxy server and HTTP response modifier designed to circumvent bot protections, CORS restrictions, and paywalls. It functions by intercepting traffic to modify HTML, CSS, and JavaScript via regular expressions and altering HTTP headers to reveal restricted content. The project distinguishes itself through its ability to bypass anti-scraping mechanisms and specialized bot detection, such as Cloudflare, by integrating with external challenge-solving services. It also enables client identity emulation by spoofing user agents and network identifiers to masquerade as different brow

Dev-sidecar is a local HTTP proxy tool designed to optimize development environments by intercepting and modifying network traffic. It functions as a man-in-the-middle service that routes outgoing requests through custom endpoints, enabling developers to accelerate access to remote services, manage package registry connections, and bypass regional connectivity restrictions. The tool distinguishes itself through its ability to perform dynamic DNS resolution overrides and certificate-based traffic inspection, allowing for granular control over network paths and secure data analysis. It employs

This project is a Node.js HTTP proxy server that enables cross-domain API requests from browsers by injecting Cross-Origin Resource Sharing headers into HTTP responses. It functions as a reverse proxy gateway and header manipulator, allowing for the interception and modification of traffic between a client and a target server. The proxy provides mechanisms to bypass browser same-origin policy restrictions through automated header injection. It includes capabilities for origin-based rate limiting and request interception to control traffic flow and prevent unauthorized usage of the proxy servi

Hono is a minimal JavaScript HTTP framework designed for building web servers across multiple runtimes, including Node.js, edge runtimes, and serverless platforms. It functions as a cross-runtime web server and a web standard API wrapper, normalizing various runtime request and response objects into standard Web API signatures. The project serves as an HTTP middleware orchestrator and request handler, utilizing a middleware-based request pipeline and hierarchical route mounting to create modular server structures. It distinguishes itself through a runtime-agnostic event wrapper that ensures c

DnsServer is a recursive and authoritative DNS server that provides domain name resolution and zone hosting. It functions as both a recursive resolver, performing iterative lookups across the internet, and an authoritative manager for primary and secondary DNS zones. The system distinguishes itself through high-availability clustering and a programmable HTTP API for automating server configurations and bulk record management. It supports a wide range of encrypted transport protocols, including TLS, HTTPS, and QUIC, and allows for custom functionality via a plugin-based request interception fr

This project is a Go-based HTTP proxy server designed as a censorship circumvention tool. It functions as an upstream proxy manager and SOCKS5 tunneling gateway that routes network traffic between clients and destination servers to bypass network restrictions. The system differentiates itself through automated proxy routing, which detects unreachable websites and automatically switches traffic between direct access and a pool of parent proxies. It includes a PAC file generator to produce proxy auto-config files for browsers and integrates SSH tunneling to establish secure remote sockets. Bro

nodejs-argo is a Node.js network proxy server designed to route network traffic and manage secure communication tunnels across various protocols. It functions as a cloud proxy tunnel that exposes local services to the public internet and includes a subscription manager for generating and distributing connection configuration links to clients. The system integrates a network service monitor to track the operational status and performance of services via external monitoring panels. It also utilizes endpoint-based configuration distribution to provide connection settings and authentication detai

jsproxy is a web traffic proxy designed to route requests through a ServiceWorker to bypass network restrictions while minimizing server-side processing overhead. It focuses on browser API virtualization, rewriting URL-related functions and properties so that proxied pages behave as if they are running on their original domains. The project utilizes a decoupled architecture that separates the static user interface from the data forwarding backend, allowing for deployment across multiple providers. It includes weight-based load balancing to distribute traffic across multiple proxy nodes and im

This project is a proxy server designed to intercept and modify HTTP and HTTPS traffic for Netease Cloud Music. It functions as network middleware to restore playback for songs and albums restricted by geographic regions and to unlock premium account features, such as high-fidelity audio. The server utilizes header-based privilege injection to spoof premium status and employs conditional content redirection to route requests for unavailable media to alternative source providers. It also incorporates upstream proxy routing and IP parameters to bypass regional access restrictions. Additional c

HttpKernel is the core kernel component of the Symfony framework that orchestrates the complete HTTP request-response lifecycle. It provides an event-driven pipeline that converts an incoming HTTP request into a matching response by dispatching lifecycle events for early interception, controller resolution, error handling, response modification, and deferred tasks. The kernel automatically resolves the PHP callable that handles a request and injects its arguments using reflection and request attributes. It dispatches attribute-specific events for each PHP attribute found on a controller, enab

Rack-attack is a middleware rate limiter and request filter for the Rack interface. It provides a system for throttling HTTP requests and maintaining IP address blocklists to protect applications from malicious traffic and denial-of-service attacks. The project enables application layer DDoS mitigation and API rate limit management by identifying and rejecting requests from banned clients or abusive IP addresses. It allows for the definition of safelists to bypass filters and uses custom logic to determine if a client should be blocked or throttled. The tool covers comprehensive traffic mana

This project is a Node.js HTTP reverse proxy middleware designed to route incoming HTTP and WebSocket traffic to target backend services. It functions as a dynamic routing engine and API gateway tool, providing the capability to consolidate multiple backend services behind a single entry point. The middleware features a WebSocket proxy bridge that manages protocol upgrade handshakes to maintain persistent bidirectional communication. It also includes a request and response transformer used to intercept and modify headers, bodies, and URL paths during transit. The system provides broad traffi

proxyee-down is an HTTP proxy download manager and multi-threaded download client. It is designed to route file download requests through an HTTP proxy server to accelerate data retrieval and bypass network restrictions. The tool increases transfer speeds by splitting large files into smaller chunks and downloading them concurrently across multiple TCP connections. It features the ability to update expired or changed source URLs for existing tasks, allowing interrupted downloads to recover and resume without losing previously downloaded segments. The system provides controls for manual downl

node-ws is a lightweight proxy server implementation that supports both VLESS and Trojan protocols without requiring a kernel, making it suitable for serverless environments. The project enables running a dual-protocol proxy service that can be deployed on web hosting panels with Node.js support. The proxy service can be configured to expose subscription links at configurable paths, allowing clients to retrieve connection details for proxy nodes. It supports deployment on DirectAdmin and other web hosting panels through environment variable configuration for UUID, port, and domain settings.

electron-ssr-backup is a cross-platform Electron desktop application that serves as a ShadowsocksR proxy client and system network manager. It acts as a proxy server orchestrator, allowing users to route network traffic through specific servers and automate operating system proxy configurations. The application enables the import and organization of proxy server lists via subscription URLs, QR codes, manual configuration files, or clipboard pasting. It includes a synchronization mechanism to fetch and update server databases from remote URLs. The software provides controls for toggling betwe

Tinyproxy is a lightweight HTTP and HTTPS proxy daemon designed for POSIX operating systems. It functions as a system-level network proxy that manages web traffic with minimal resource overhead. The project supports multiple routing modes, including reverse proxying to forward requests to backend servers and transparent proxying to intercept network traffic without client-side configuration. It also includes a header filter to modify or block specific HTTP headers for privacy and security. The software incorporates network access control based on client subnets and protocol filtering. For sy

Django Silk is a profiling and inspection toolset for Django applications designed to capture SQL queries, HTTP request data, and execution timing for diagnostics. It functions as a performance profiler and debugging middleware that records runtime execution data to provide a comprehensive overview of application behavior. The system includes a database profiler for identifying slow operations through detailed timing data and an HTTP request inspector for reviewing headers, bodies, and network traffic via a web interface. It allows for the reproduction of specific server requests through gene

Apache Camel is an enterprise integration framework and Java integration engine designed to route and mediate data between disparate systems. It functions as a multi-runtime middleware that implements standardized enterprise integration patterns to manage how messages are routed, transformed, and processed. The framework includes a specialized gateway to connect large language models to enterprise data and internal systems using dedicated communication protocols. It utilizes a vast library of pre-built connectors to bridge different communication protocols and enable data exchange between inc

jscamp is a full-stack web development and education project focused on mastering JavaScript, TypeScript, and AI integration. It provides a structured curriculum and interactive exercises covering language fundamentals, frontend engineering, and backend API development. The project distinguishes itself through the implementation of autonomous AI agents capable of complex task automation, such as modifying files, managing servers, and executing API calls. It includes advanced AI development tools for conversational querying, real-time code suggestions, and automated repository analysis to gene

Dragonfly is a peer-to-peer file distribution system designed to accelerate large-scale file and container image delivery across clusters. It splits files into small pieces that peers exchange independently, enabling parallel downloads from multiple sources while a central scheduler assigns parent peers based on real-time load metrics. The system integrates with existing tools through an HTTP proxy interface and uses gRPC for internal communication between peers and the scheduler. The system distinguishes itself through automatic integrity verification at the piece level, ensuring every downl

httpstat is a command-line utility for executing HTTP requests and analyzing network timing, response metadata, and connection performance. It serves as a diagnostic tool and debugger for inspecting HTTP headers and response bodies through a terminal interface. The tool focuses on performance analysis by measuring the latency of secure web requests, including the overhead of the TLS handshake and general connection timing. It provides color-coded output to visually separate request and response metadata for human analysis. The utility covers API integration testing and network troubleshootin

HAProxy is a high-performance TCP and HTTP proxy that distributes traffic across multiple backend servers to ensure availability and fault tolerance for critical services. It operates in either TCP or HTTP mode, with an event-driven, single-threaded reactor that handles tens of thousands of connections without context switching, and supports kernel-level data transfer to minimize memory usage and latency. What distinguishes HAProxy is its configuration-file-first design, where all load-balancing rules and runtime behavior are defined in a declarative text file parsed at startup. It embeds a L