Open-source alternatives to Examples

koa-router is a routing middleware for Koa applications that maps incoming HTTP requests to specific handler functions based on URL patterns and HTTP methods. It provides the foundation for organizing web endpoints and developing REST APIs by linking request paths to their corresponding controller actions. The project enables the organization of complex endpoints through recursive router nesting, allowing multiple router instances to be mounted as middleware to create logical route hierarchies. It supports dynamic URL generation via named route mapping, which allows the creation of URL string

go-restful is a framework for building RESTful web services in Go. It functions as a toolkit for managing API endpoints, providing a request router that maps incoming HTTP requests to handler functions using path parameters and custom URL patterns. The framework includes a data conversion layer that transforms Go structures into JSON or XML formats for request and response bodies. It also provides a system for organizing related web services into containers to manage endpoint prefixing and shared configuration. The project covers request lifecycle management through middleware filters for va

This project is a Go programming language study guide and backend development course. It provides a collection of learning notes and practical examples covering fundamental syntax and core language concepts. The repository functions as a tutorial for building web APIs and network services. It includes implementation guides for the Gin web framework and code demonstrations for creating remote procedure call services using Protocol Buffers. The material covers backend API engineering, including routing, data binding, and error handling. It also includes examples of structured logging and custo

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

Salvo is a comprehensive Rust web framework for building asynchronous HTTP servers and web applications. It features a hierarchical web router that uses a tree-based structure to map requests to handlers and an asynchronous middleware pipeline based on the onion model for request and response pre- and post-processing. The framework is distinguished by its native support for modern network protocols, including a QUIC-based HTTP/3 implementation alongside HTTP/1 and HTTP/2. It includes an integrated OpenAPI documentation generator that extracts schemas directly from handler signatures to produc

This project provides a routing library for the Koa web framework, designed to map incoming HTTP requests to specific handler functions. It serves as a core infrastructure for organizing application logic into modular endpoints, utilizing declarative route registration and middleware-based request pipelines to process traffic. The library distinguishes itself through its support for hierarchical router nesting, which allows for the creation of scalable, modular application architectures and distinct API versioning. It offers granular control over request matching, including support for regula

This is a streamlined Ruby on Rails framework designed for building lightweight backend services and JSON endpoints. It utilizes a model-view-controller architecture to separate data models and business logic from API responses, specifically omitting browser-centric views to reduce system overhead. The framework provides a system for rapidly generating models, controllers, and routes through JSON API scaffolding. It maps HTTP verbs to controllers to ensure consistent resource routing and data modeling for RESTful API backends. The project includes capabilities for HTTP request management, su

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

ihp is a type-safe web framework and full-stack application orchestrator designed for PostgreSQL. It functions as a server-side rendering framework and a type-safe ORM that automatically generates record types from SQL schemas to ensure compile-time query validation. The platform distinguishes itself by verifying routing, database queries, and templates at compile time to prevent runtime crashes. It implements real-time web interfaces using WebSockets for instant data synchronization and employs server-driven hypermedia for partial DOM patching. The framework covers a broad range of integrat

Kemal is a high-performance web framework for the Crystal language, designed for building scalable APIs and web applications. It provides a natively compiled web server environment that leverages ahead-of-time compilation to maximize request speed and minimize memory overhead. The framework is distinguished by a middleware-based routing engine that uses pattern-matching and a chainable pipeline for flexible request filtering. It includes a dedicated server-side template engine for generating dynamic HTML and a WebSocket communication server for bidirectional real-time messaging and state broa

Javalin is a lightweight web framework for Java and Kotlin designed for building REST APIs and web applications. It functions as an embedded Jetty web server, allowing applications to run as standalone processes without the need for an external servlet container. The project provides specialized frameworks for diverse communication patterns, including a REST API framework with automatic OpenAPI schema generation, a GraphQL API framework with query and mutation resolvers, and a WebSocket server for bidirectional real-time communication. It also includes a dedicated framework for pushing real-t

Spark-kotlin is a lightweight web framework for the Java Virtual Machine that provides a domain-specific language for building server-side applications. It functions as an HTTP request router, allowing developers to map URL patterns and request methods to functional handlers to process web traffic. The framework utilizes a static method-based syntax to configure the embedded server runtime and manage network connections. It supports real-time bidirectional communication through an event-driven lifecycle for web sockets, enabling the definition of handlers for connection events and incoming da

Practicalnode is a comprehensive educational resource and backend development framework for mastering server-side programming with Node.js. It provides a structured approach to building scalable network services, REST APIs, and real-time applications using asynchronous JavaScript. The project serves as a detailed implementation guide for several core backend patterns, including MongoDB data modeling and the construction of REST API development kits. It emphasizes a specific workflow for Docker containerization and offers a variety of strategies for managing user identity through stateless tok

Martini is a web framework for the Go programming language that provides a toolkit for building web applications. It functions as a routing engine and an HTTP middleware pipeline to map network requests to specific handler functions. The framework is distinguished by its dependency injection system, which automatically resolves and provides requested service types as arguments to handler functions. This allows for the decoupling of business logic from infrastructure by matching requested types against a registry of available services. The project covers a broad range of web capabilities, inc

Nickel is a web framework for the Rust programming language designed to handle HTTP requests and responses. It functions as a server-side toolkit that provides integrated routing, middleware, and JSON deserialization. The framework utilizes a middleware-based request pipeline to insert custom logic and state management into the request-response cycle. It also includes a server-side template engine for generating dynamic HTML pages by merging data with markup templates. The project covers high-level capabilities for REST API development, web application routing, and global error handling to i

Iris is a high-performance web framework and API toolkit for the Go programming language. It provides the infrastructure necessary to build HTTP/2 web applications, REST APIs, and MVC-based websites. The project distinguishes itself through a flexible architectural model that supports multiple isolated application instances within a single process and allows for binary-embedded asset loading to eliminate external filesystem dependencies. It features dynamic router hot-reloading and a pluggable view engine for rendering dynamic HTML content. The framework covers a broad range of capabilities,

This project is a framework-agnostic routing component for PHP applications designed to map incoming web requests to specific controller methods or functions. It serves as a utility for managing request dispatching and URL mapping within server-side web environments. The library identifies the correct handler by matching request URLs against predefined patterns using regular expressions and verifying the request verb against specific method requirements. It supports the construction of RESTful API endpoints and facilitates the execution of logic through a middleware pipeline that can inspect

Hug is a type-driven Python web framework designed for building APIs. It uses Python type annotations to automatically validate and convert incoming request data and to format outgoing responses. The framework functions as an automated documentation tool by extracting function signatures and markers from source code to generate accessible API specifications. It also supports non-blocking coroutines for asynchronous API processing to handle background tasks without interrupting the main request cycle. The project provides capabilities for REST API development, including route mapping, endpoin

Micro is a Node.js HTTP microservices framework used to build asynchronous web servers. It enables the creation of lightweight services that handle requests and responses through single-purpose functions to reduce operational footprint and latency. The framework functions as a JSON API backend and a WebSocket communication server, allowing for the establishment of bidirectional socket connections for real-time data updates and instant messaging. Its capability surface covers HTTP request processing, including the parsing of JSON and URL-encoded request bodies. It also supports external API i

Spark is a lightweight Java web framework and embedded server designed for building web applications with minimal boilerplate. It functions as an HTTP routing engine that maps URL paths and methods to handler functions, providing a specialized domain specific language for web development in Kotlin. The framework enables the implementation of REST APIs and web services through the definition of HTTP routes. It supports the extraction of dynamic path parameters and the transformation of response data into formats such as JSON. Additional capabilities include the ability to serve static files a

Drogon is a high-performance C++ HTTP web framework and asynchronous web server designed for building web applications and REST APIs. It utilizes an event-driven, non-blocking architecture to handle concurrent HTTP and WebSocket connections, and it implements a model-view-controller structure to separate business logic from presentation. The framework includes an integrated C++ object-relational mapping system and database client for performing asynchronous operations with relational databases and Redis key-value stores. It supports real-time, full-duplex communication via WebSockets and prov

CodeIgniter is a PHP web framework built on the Model-View-Controller pattern, designed for building full-stack web applications. It provides a lightweight toolkit with minimal configuration, organizing application logic into controllers, models, and views for clean separation of concerns. The framework includes a fluent query builder for constructing SQL statements programmatically, PSR-4 autoloading with namespace mapping, and a service-based dependency injection container for managing shared class instances. The framework distinguishes itself through its comprehensive set of built-in tools

This project is a request router and web framework for the Go programming language. It provides a toolkit for matching incoming HTTP network requests to specific handler functions by evaluating criteria such as URL paths, request methods, headers, and hostnames. The framework distinguishes itself through its flexible matching capabilities, which include support for regular expressions and dynamic variable extraction from URL segments. It allows developers to organize routes into logical hierarchies, share common path prefixes, and maintain a central registry of named routes to facilitate prog

Oak is a cross-runtime HTTP middleware framework and web server designed to operate across Deno, Node.js, Bun, and Cloudflare Workers. It provides a unified system for building APIs and web servers using a sequential chain of middleware functions and a hierarchical routing engine that maps URL paths to handlers via a nested tree structure. The framework includes a runtime-agnostic serverless adapter that translates diverse cloud provider events into a standard request and response interface. It also features a dedicated WebSocket server implementation for bidirectional real-time communication

Connect-go is a library for building type-safe remote procedure call services that are wire-compatible with gRPC and HTTP. It provides a Go implementation of Protocol Buffers for structured data exchange, enabling the creation of multi-protocol RPC servers and generated type-safe clients. The framework is distinguished by its polyglot protocol support, allowing a single server handler to serve requests using several different protocols simultaneously over HTTP. This includes the ability to toggle between different transport protocols for the same service and the use of pluggable content negot

Quart is an asynchronous Python web framework that implements the ASGI specification. It is used to build high-performance HTTP and WebSocket services, JSON REST APIs, and web applications using async and await syntax for non-blocking request handling. The framework supports persistent bidirectional communication via WebSocket API servers and enables the proactive delivery of assets through HTTP server push. It also includes a template engine for rendering dynamic HTML web pages and supports incremental request and response streaming to manage large payloads. General capabilities cover reque

This project serves as a comprehensive educational repository and technical reference collection, documenting a wide range of software engineering practices and modern development technologies. It provides a structured learning path for developers, curating tutorials and practical examples that cover the full lifecycle of application development, from initial project scaffolding to deployment and maintenance. The repository distinguishes itself by offering deep technical insights into complex architectural patterns, including actor-based concurrency models for managing parallel tasks and cont

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

Compojure is a routing library for Ring web applications that maps HTTP requests to handler functions using composable route definitions. It serves as a middleware component for the Ring ecosystem, directing web traffic to specific application logic by matching incoming request methods and paths against defined URI patterns. The router utilizes a modular architecture that allows related endpoints to be grouped into decoupled modules. This composition model enables the construction of larger applications from smaller, independent routing contexts. The library provides capabilities for process

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