Open-source alternatives to Xray Core

OpenFaaS is a serverless function platform that provides a container-native framework for deploying and managing event-driven code. It functions as an abstraction layer over container orchestrators, allowing developers to package code into scalable functions that run across Kubernetes clusters or edge computing environments. The platform distinguishes itself through a developer-centric runtime that utilizes standardized language templates and automated build pipelines to simplify the creation of container images. It features a central API gateway that manages request routing, authentication,

The project is a modular compiler infrastructure framework designed for building programming language toolchains, frontends, and backends. It provides a comprehensive suite of reusable libraries and tools that enable developers to transform source code into efficient native executables across diverse hardware architectures and operating systems. At its core, the system utilizes a language-agnostic intermediate representation bitcode, which serves as a unified format for code analysis, optimization, and machine-specific code generation. What distinguishes this framework is its highly decoupled

Zulip is an open-source, self-hosted chat platform designed for real-time team communication. It organizes conversations into threaded streams, allowing users to maintain focus and manage complex discussions within a private, secure infrastructure. The project provides full control over data, authentication, and server management, making it a comprehensive solution for organizations requiring a dedicated messaging environment. The platform distinguishes itself through a hybrid backend architecture that combines a robust web framework for standard requests with an asynchronous event-streaming

v2ray-core is a network proxy framework and custom proxy engine designed for censorship circumvention. It functions as a traffic routing platform that directs network data between inbound and outbound connections to access blocked content and services. The system employs a modular architecture using pluggable protocol handlers and a chain-based connection pipeline to transform and forward network traffic. It provides secure tunneling infrastructure to establish encrypted connections and uses a rule-based routing system to direct data between protocols and destinations. The framework includes

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

Sing-box is a universal proxy engine and traffic router designed to manage complex network connectivity across multiple operating systems. It functions as a configuration-driven core that intercepts system-level traffic, allowing for transparent proxying through encrypted tunnels. By normalizing diverse network protocols into a unified interface, the engine enables consistent traffic forwarding and protocol translation regardless of the underlying environment. The project distinguishes itself through a declarative configuration pipeline that validates and merges modular settings into a unifie

Clash Meta for Android is a system-level network utility that functions as a rule-based proxy engine for mobile devices. It operates by intercepting system-wide network traffic through a virtual interface, allowing it to route data packets through configurable tunnels based on domain, IP, and geo-location patterns. By acting as a transparent proxy, the application manages connectivity and enhances privacy for all installed software on the device. The project distinguishes itself by utilizing a high-performance, cross-compiled proxy kernel that handles concurrent connections and protocol trans

Vert.x is a reactive polyglot framework and asynchronous programming library for the Java Virtual Machine. It functions as an event-driven networking framework and toolkit for building non-blocking applications. The system enables the development of high-concurrency network services and event-driven microservices. It supports the creation of reactive services using multiple languages running on the JVM. The framework covers a wide range of capabilities including the management of HTTP and TCP network protocols, non-blocking file system access, and the integration of reactive clients.

nps is an intranet penetration proxy server that exposes internal network services to the public internet via secure TCP and UDP tunnels. It functions as a traffic forwarder and reverse proxy, enabling external access to local services, remote desktops, and internal APIs. The project is distinguished by a centralized web-based administration interface used to configure tunnels, manage user accounts, and monitor real-time bandwidth metrics. It supports domain-based request routing and provides a mechanism to secure public services using HTTPS encryption through digital certificates. The syste

Vapor is a comprehensive server-side web framework designed for building scalable, high-performance applications and APIs in Swift. It provides a non-blocking, event-loop-based runtime that manages concurrent task processing, background job queues, and asynchronous request handling. The framework is built around a dependency injection container that manages the lifecycle and resolution of services, configurations, and database connections throughout the request pipeline. The framework distinguishes itself through a protocol-oriented design that emphasizes type safety across all layers of the

libhv is a high-performance C/C++ network library and event-driven I/O framework used to build TCP, UDP, SSL, HTTP, WebSocket, and MQTT clients and servers. It provides a non-blocking event loop for managing network sockets, timers, and system signals across multiple threads. The project is distinguished by its integrated support for specialized network roles, including a full HTTP web server with RESTful routing and middleware, an MQTT messaging client for IoT communication, and the ability to implement SOCKS5 and HTTP proxies. It also features a reliable UDP implementation to ensure ordered

This project is the core source code for a general-purpose, server-side scripting language designed for web development. It provides a high-performance execution engine that parses and runs scripts to generate dynamic content, supported by a comprehensive standard library for data manipulation, networking, and system interaction. The repository serves as an open-source development platform where the language runtime and its interpreter are built, maintained, and evolved through community-driven governance. The runtime is powered by a stack-based virtual machine that executes compiled bytecode

OpenClash is a network traffic controller designed for embedded router hardware. It functions as a kernel-level traffic management solution that intercepts network packets to enforce user-defined routing policies and connectivity rules across home or office network environments. The project distinguishes itself through a comprehensive build and deployment pipeline tailored for diverse firmware architectures. It provides a cross-compilation environment that transforms source code into hardware-specific installation files, while also offering a package management system to handle the retrieval

Streamlit is a Python framework designed to transform data scripts into interactive web applications. It utilizes a reactive execution engine that automatically reruns scripts from top to bottom whenever a user interaction triggers a state change, ensuring the interface remains synchronized with the underlying data. By providing a declarative interface, it allows developers to build functional applications without requiring extensive knowledge of frontend web technologies. The framework distinguishes itself through an identity-based widget reconciliation system that persists user input across

Linera is a multi-chain smart contract platform designed for horizontal scalability through a microchain-based distributed ledger. By partitioning state into independent, parallel chains that share a common validator set, the protocol enables high-performance execution of modular applications. The system utilizes a WebAssembly-based runtime to ensure secure, platform-independent execution of contract logic across the network. The platform distinguishes itself through an asynchronous messaging framework that coordinates state changes between chains by queuing messages for execution in subseque

Geth is a comprehensive execution client for the Ethereum network, serving as a foundational node implementation that processes transactions, maintains the distributed ledger state, and participates in peer-to-peer consensus. It provides a robust infrastructure for synchronizing, validating, and serving blockchain data, utilizing a persistent Merkle Patricia Trie database to ensure the cryptographic integrity of historical records. As a sandboxed smart contract runtime, it executes bytecode according to deterministic protocol rules, enabling the deployment and interaction of decentralized appl

KCP is a low-latency transport protocol and reliability layer designed to provide TCP-like guaranteed delivery and ordering over UDP. It implements an automatic repeat request protocol to minimize network jitter and delays, prioritizing timeliness over bandwidth efficiency. The project distinguishes itself through a pluggable congestion controller and flow control logic, allowing the transport layer to be tuned for specific network environments. It includes a NAT keep-alive system that uses periodic heartbeat packets to maintain active communication paths and prevent address translation timeo

This project is a high-performance numerical computing library designed for large-scale scientific and machine learning workloads. It functions as an automatic differentiation framework and a just-in-time compilation engine, transforming high-level Python code into optimized machine instructions. By enforcing pure functional programming patterns and immutable array semantics, the library ensures that mathematical functions remain compatible with automated graph transformations and symbolic differentiation. The platform distinguishes itself through its distributed array computing capabilities,

Kitty is a high-performance, GPU-accelerated terminal emulator designed to provide a consistent and extensible workspace across different operating systems. It leverages graphics hardware to render text, images, and complex layouts with low latency, while providing a robust environment for demanding command-line workflows. The project distinguishes itself through its integrated workspace management and programmable interface. It functions as a tiling window manager that organizes terminal windows, tabs, and layouts into persistent, keyboard-driven sessions. Users can automate complex workflow

Rathole is a reverse proxy tunneling tool designed to expose local services behind firewalls and network address translation to the public internet. It functions as a secure tunneling infrastructure that enables remote access to private network resources without requiring manual router port forwarding configurations. The system utilizes a client-server architecture where a public-facing gateway coordinates with a private-network agent. It distinguishes itself by multiplexing multiple logical service connections through a single persistent TCP stream, which reduces the overhead of maintaining

This project provides a containerized virtualization engine that runs full Windows operating system instances within isolated containers. By acting as a cross-platform virtualization runtime, it enables the deployment of desktop environments on any host that supports standard container runtimes, ensuring consistent execution across diverse infrastructure. The system distinguishes itself by utilizing kernel-level virtualization primitives and hardware emulation to execute guest operating systems. It leverages accelerated kernel execution to offload CPU instructions to the host processor for pe

Outline is a full-stack server-side web application designed as a centralized platform for collaborative knowledge management. It provides teams with the infrastructure to create, organize, and share structured documentation through real-time editing tools, while supporting high availability and horizontal scalability in production environments. The platform distinguishes itself through a comprehensive suite of operational and development tools. It includes a command-line interface for managing database schema versioning and structural consistency across deployments, alongside an integrated t

This project is a command-line tool designed to manage multiple isolated language runtime versions on a single development machine. It enables users to install, switch between, and maintain different runtime versions, ensuring that project-specific requirements are met without conflicting with system-wide software. The tool distinguishes itself through a shim-based execution environment that intercepts system calls and dynamically routes them to the correct runtime version based on the current directory. By traversing the file system hierarchy to locate configuration files, it automatically a

ToolJet is a low-code development platform designed for building and deploying internal business applications. It provides a visual interface where users can drag and drop components to design layouts, connect to various data sources, and execute custom logic. The platform is built on a containerized architecture, ensuring that applications remain portable and consistent across different cloud and server environments. The platform distinguishes itself through integrated artificial intelligence capabilities that assist in the generation of user interfaces, database schemas, and data queries fr

v2rayNG is an Android proxy client designed to route device network traffic through encrypted tunnels. It functions as a network routing engine that intercepts outgoing requests and applies custom traffic rules to manage connectivity and enhance user privacy. The application distinguishes itself by integrating a high-performance network proxy core, which enables complex protocol translation and traffic management directly on mobile devices. It utilizes local loopback and Unix-socket tunneling to redirect device-wide requests, maintaining persistent connectivity through native background servi

Wails is a cross-platform framework for building native desktop applications by combining a Go backend with web-based frontend technologies. It enables developers to create lightweight software by utilizing the host operating system's native web rendering engine, eliminating the need to bundle heavy browser dependencies. The framework distinguishes itself through a robust communication layer that bridges the backend and frontend. It automatically generates type-safe JavaScript bindings and proxies from Go code, allowing for seamless, asynchronous method invocation and data serialization acros