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Web Application Interface Libraries

Libraries that define a common interface between web servers, middleware, and web applications—enabling modular, composable, and interoperable web development (similar to Rack in Ruby or WSGI in Python).

33 projects

32,767 contributors

$29M

Flask

Flask is a lightweight and flexible web application framework for Python that allows developers to quickly build web applications and APIs. It provides the essential tools and libraries while maintaining simplicity and extensibility through a modular design.

Contributors

4,698

Organizations

1,365

Software value

$804K

Hono

Hono is a lightweight, ultrafast web framework for building high-performance applications. It provides a simple, expressive API for handling HTTP requests and can be used with various JavaScript/TypeScript runtimes including Cloudflare Workers, Deno, and Node.js.

Contributors

2,452

Organizations

830

Software value

$1.7M

Dropwizard

Dropwizard is a Java framework that helps developers quickly create production-ready RESTful web services by combining various stable Java libraries like Jetty, Jersey, Jackson, and Hibernate into a lightweight package. It provides out-of-the-box support for configuration, application metrics, logging, and operational tasks.

Contributors

2,406

Organizations

552

Software value

$2.5M

Werkzeug

Werkzeug is a comprehensive WSGI web application library that provides a collection of utilities for building Python web applications. It includes tools for URL routing, request/response objects, debugging, and other common web development tasks.

Contributors

2,261

Organizations

776

Software value

$1.1M

Rack

Rack is a modular Ruby web server interface that provides a minimal, modular and adaptable interface for developing web applications. It wraps HTTP requests and responses in a simple way, allowing web frameworks and middleware to be mixed and matched.

Contributors

2,227

Organizations

863

Software value

$586K

Sanic

Sanic is a Python web framework and server designed for building fast HTTP APIs with async/await support. It offers features like request handling, routing, middleware, and WebSocket capabilities while emphasizing speed and simplicity.

Contributors

1,940

Organizations

540

Software value

$2.9M

Sinatra

Sinatra is a lightweight web application framework for Ruby that enables building web applications with minimal effort using a domain-specific language. It emphasizes simplicity and flexibility over convention, allowing developers to quickly create web applications and APIs.

Contributors

1,858

Organizations

654

Software value

$737K

koajs-koa

Koa is a next-generation web framework for Node.js that aims to be a smaller, more expressive, and more robust foundation for web applications and APIs. It leverages async functions to provide a cleaner middleware composition and better error handling.

Contributors

1,613

Organizations

605

Software value

$243K

OmniAuth

OmniAuth is a flexible authentication system for web applications that standardizes multi-provider authentication, allowing developers to easily integrate various authentication providers like OAuth, LDAP, and OpenID into their applications using a consistent interface

Contributors

1,583

Organizations

615

Software value

$89K

pillarjs

pillarjs is a subproject of Express

Contributors

1,460

Organizations

495

Software value

$951K

Bottle

Bottle is a fast, simple and lightweight WSGI micro web-framework for Python. It offers request dispatching with URL parameter support, templates, a built-in HTTP development server, and adapters for many third party WSGI/HTTP-servers and template engines.

Contributors

1,227

Organizations

399

Software value

$329K

Pyramid

Pyramid is a web application framework for Python that emphasizes flexibility, minimalism, and rapid development. It provides tools and patterns for building web applications and APIs with a focus on modularity and scalability.

Contributors

1,177

Organizations

349

Software value

$3.6M

Falcon Web Framework

Falcon is a minimalist WSGI web framework for building fast and reliable Python web APIs and applications. It emphasizes performance, reliability and flexibility while maintaining a clean and intuitive API design.

Contributors

1,042

Organizations

285

Software value

$1.9M

Sprockets

Rack-based asset packaging system

Contributors

1,034

Organizations

414

Software value

$505K

Plug

Compose web applications with functions

Contributors

996

Organizations

377

Software value

$528K

Yesod Web Framework

A RESTful Haskell web framework built on WAI.

Contributors

967

Organizations

287

Software value

$766K

WAI (Web Application Interface)

WAI (Web Application Interface) is a Haskell web server interface and middleware ecosystem that provides modular components for building web applications. It serves as a low-level interface between web servers and applications, enabling consistent handling of HTTP requests and responses across different web servers.

Contributors

622

Organizations

236

Software value

$621K

Ratpack

Ratpack is a set of Java libraries for building modern HTTP applications, with support for reactive programming, non-blocking I/O, and high performance. It provides a simple and intuitive API for creating web services and applications using Java or Groovy.

Contributors

575

Organizations

146

Software value

$3.1M

CherryPy

CherryPy is a minimalist, Pythonic web framework that enables developers to build web applications in much the same way they would build any other object-oriented Python program. It provides a WSGI-compliant interface, built-in tools for sessions, static content, caching, authentication, and more.

Contributors

531

Organizations

140

Software value

$1M

asgiref

ASGI (Asynchronous Server Gateway Interface) reference implementation and utilities library that provides a standard interface between async-capable Python web servers, frameworks, and applications

Contributors

416

Organizations

177

Software value

$146K

Tough Cookie

Tough Cookie is a Node.js HTTP cookie library that provides a complete implementation of RFC 6265 for working with cookies in web applications. It offers robust cookie parsing, formatting, storage and management capabilities.

Contributors

367

Organizations

127

Software value

$434K

WebOb

WSGI request and response objects

Contributors

360

Organizations

124

Software value

$969K

Rack Contrib

A collection of add-on components and middleware for the Rack web server interface in Ruby, providing additional functionality like authentication, caching, profiling, and request/response manipulation

Contributors

262

Organizations

119

Software value

$106K

Gorilla Handlers

A Go package providing middleware handlers for HTTP services, including logging, compression, CORS, authentication, and other common functionality for web applications

Contributors

259

Organizations

116

Software value

$65K

Mezzio

PSR-15 Middleware Microframework

Contributors

183

Organizations

43

Software value

$919K

Python-Multipart

A streaming multipart parser for Python.

Contributors

139

Organizations

56

Software value

$104K

Cro

Cro is a framework for building reactive distributed systems in Perl 6/Raku, providing tools and libraries for creating HTTP/HTTPS servers, web applications, and microservices with support for WebSockets and HTTP/2

Contributors

112

Organizations

32

Software value

$2.3M

Diactoros

PSR HTTP Message implementations

This project hasn't been onboarded to LFX Insights.

senchalabs/connect

Connect is a middleware layer for Node.js

This project hasn't been onboarded to LFX Insights.
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