Open-source Backend & APIs projects

266 MIT-licensed backend & apis projects, most-starred first — free to use, modify and ship commercially. Each page covers what it is, who it suits, how to install and run it, and how it compares.

1. 1axiosA promise-based HTTP client that works in both browsers and Node.js.★ 109k
2. 2DenoA runtime for running JavaScript and TypeScript programs, with secure defaults.★ 109k
3. 3FastAPIA Python framework for building web APIs quickly, using standard type hints.★ 105k
4. 4GinA fast Go web framework for building HTTP APIs and web services with a simple routing API.★ 89.5k
5. 5HoppscotchOpen-source app for building, sending, and testing API requests in the browser, desktop, or CLI.★ 80.7k
6. 6NestJSA TypeScript/JavaScript framework for building structured server-side Node.js applications.★ 77k
7. 7json-serverA fake REST API server built from a JSON file, for prototyping and testing front ends.★ 75.7k
8. 8awesome-scalabilityA curated reading list of articles and talks on designing large systems that scale, stay reliable, and perform★ 75.3k
9. 9ExpressA minimal, unopinionated web framework for building servers and APIs with Node.js.★ 69.6k
10. 10TraefikA reverse proxy and load balancer that configures itself from your container or orchestrator.★ 65.4k
11. 11Socket.IOA JavaScript library for real-time, two-way messaging between clients and servers.★ 63.2k
12. 12PocketBaseOpen source Go backend in one file: SQLite database, user auth, file storage, and an admin UI.★ 61.6k
13. 13NuxtA free, open-source framework for building full-stack web apps and sites with Vue.js.★ 61k
14. 14RailsA Ruby web framework for building database-backed web apps using the MVC pattern.★ 58.8k
15. 15servietteA no-code server that answers questions from your documents and updates answers when files change.★ 58.7k
16. 16JSON for Modern C++A single-header C++ library for reading, writing and manipulating JSON data.★ 50.8k
17. 17TanStack QueryA library for fetching, caching, and updating data from servers in web apps.★ 50.5k
18. 18LocalAIOpen-source engine that runs AI models (text, vision, voice, image, video) locally behind an OpenAI-style API.★ 50.1k
19. 19BrunoFree, offline-first desktop app for exploring and testing APIs, storing collections as files.★ 48k
20. 20copypartyA portable file server you run from one Python file, for uploading and sharing files via web browser.★ 47.2k
21. 21Full Stack FastAPI TemplateA starter project combining a FastAPI backend, React frontend, and PostgreSQL database, with login and Docker ★ 46.1k
22. 22PayloadOpen-source Next.js framework that adds a TypeScript backend and admin panel to your app.★ 45.6k
23. 23AlamofireA Swift library that makes HTTP network requests in apps simpler to write.★ 42.4k
24. 24tRPCA TypeScript library for building APIs whose types are shared between server and client, with no code generati★ 40.8k
25. 25FiberAn Express-style web framework for building fast HTTP servers and APIs in Go.★ 40.2k
26. 26ruoyi-vue-proJava admin-system template (Spring Boot + Vue) with permissions, workflow, multi-tenancy and many business mod★ 40.2k
27. 27GORMA Go library that maps database tables to Go structs so you can query data without writing raw SQL.★ 40k
28. 28QuivrOpen-source engine that ingests content streams and makes them searchable and monitorable, in evaluation stage★ 39.6k
29. 29ASP.NET CoreA free, open-source framework from Microsoft for building web apps and APIs in C# on any major OS.★ 38.5k
30. 30VA small, fast compiled programming language with a simple syntax and no library dependencies.★ 38.1k
31. 31FastifyA fast, low-overhead web framework for building servers and APIs with Node.js.★ 37.3k
32. 32One APISelf-hosted gateway that exposes many LLM providers through one OpenAI-style API with key management.★ 37.3k
33. 33eugenp/tutorialsA large collection of small, focused Java and Spring tutorial code projects, many with Maven builds.★ 37.3k
34. 34TypeORMA TypeScript/JavaScript library that maps database tables to code objects for Node.js apps.★ 36.7k
35. 35KoaSmall Node.js web framework built on async functions for writing HTTP middleware.★ 35.7k
36. 36Hackathon StarterA starter template for building Node.js web apps with login, OAuth sign-in, and many API examples.★ 35.3k
37. 37LaravelA PHP web framework for building web applications with a clean, readable syntax.★ 35k
38. 38PoetryA tool for managing Python project dependencies and packaging them, using one pyproject.toml file.★ 34.3k
39. 39Spring Boot DemoA collection of Spring Boot demo modules showing how to add common features like databases, caching, and messa★ 34.1k
40. 40TokioA Rust library for writing fast, reliable async programs that handle networking and timers.★ 33.6k
41. 41RemixA full-stack web framework built on standard Web APIs, shipped as one npm package.★ 33.4k
42. 42go-zeroA Go framework for building web and RPC microservices, with a code generator called goctl.★ 33.4k
43. 43AFNetworkingDeprecated Objective-C networking library for Apple platforms; archived, no further releases.★ 33.3k
44. 44PentAGISelf-hosted AI agent system that runs penetration testing tasks in an isolated Docker sandbox.★ 33k
45. 45EchoA minimalist Go web framework for building fast HTTP servers and APIs.★ 32.8k
46. 46HonoA small web framework for building APIs and sites that runs on many JavaScript platforms.★ 32.8k
47. 47SymfonyA PHP framework for building web and console applications, plus reusable PHP components.★ 31.2k
48. 48UppyA modular JavaScript file uploader for web browsers, with resumable uploads and many file sources.★ 31.1k
49. 49jQuery File UploadA jQuery widget for picking, dragging in, previewing and uploading files from a web page.★ 30.7k
50. 50Better AuthA TypeScript authentication and authorization framework with built-in features and plugins.★ 30.6k
51. 51ViperA Go library for loading and merging application configuration from files, env vars, flags, and more.★ 30.5k
52. 52SequelizeA Node.js and TypeScript ORM for working with SQL databases using JavaScript objects.★ 30.3k
53. 53ComposerDependency manager for PHP projects: declare, install, and update the libraries your code uses.★ 29.6k
54. 54PydanticValidates Python data using standard type hints, converting and checking inputs automatically.★ 29.3k
55. 55SpringAllA collection of Spring tutorial code samples organized as step-by-step lessons, companion to a blog.★ 28.9k
56. 56BagistoOpen-source online store and multi-vendor marketplace software built on Laravel (PHP).★ 28.3k
57. 57PostgRESTTurns an existing PostgreSQL database into a REST API with no hand-written server code.★ 27.7k
58. 58axumA Rust library for routing HTTP requests and writing request handlers, built on Tokio.★ 27.7k
59. 59vcpkgA free C/C++ package manager that downloads and builds libraries for your projects.★ 27.6k
60. 60MongooseA Node.js library that gives your app structured models and queries on top of MongoDB.★ 27.5k
61. 61Go kitA Go toolkit of packages and best practices for building microservices.★ 27.4k
62. 62libuvA C library that handles asynchronous input/output and event loops across operating systems.★ 27.3k
63. 63Nano IDA tiny JavaScript library that generates short, random, URL-friendly unique IDs.★ 27.1k
64. 64nodemonA wrapper for node that restarts your app automatically when files change.★ 26.7k
65. 65VaporA web framework for building websites and APIs in the Swift programming language.★ 26.2k
66. 66KratosA lightweight Go framework for building cloud-native microservices.★ 26k
67. 67RedocTurns OpenAPI, AsyncAPI, or GraphQL specs into a readable, browsable API documentation page.★ 26k
68. 68{fmt}A C++ library for fast, type-safe text formatting, as a safer alternative to printf and iostreams.★ 25.9k
69. 69window.fetch polyfillA browser polyfill that adds window.fetch to older browsers that lack it.★ 25.8k
70. 70NSQA realtime messaging system that passes messages between programs, built to run across many machines.★ 25.8k
71. 71LogrusA structured logger for Go that is API-compatible with the standard library log package.★ 25.8k
72. 72VegetaCommand-line and Go library for sending steady HTTP request loads to test how servers hold up.★ 25.2k
73. 73zapA fast, structured logging library for Go programs.★ 24.7k
74. 74winstonA Node.js logging library that sends logs to multiple places like the console or files.★ 24.5k
75. 75DeviseReady-made user sign-up, login, and password reset for Rails apps, built on Warden.★ 24.4k
76. 76urfave/cliA Go library for building command line tools with commands, flags, help text and shell completion.★ 24.3k
77. 77TemporalRuns long-running app workflows that survive crashes and retry failed steps automatically.★ 24.1k
78. 78Krayin CRMOpen-source CRM built on Laravel for managing customers, leads, and sales.★ 24.1k
79. 79AnubisA web firewall that challenges incoming requests to block AI scraper bots from your site.★ 23.9k
80. 80ProxyPoolPython tool that collects free proxy IPs from public sites, checks them, and serves working ones via an API.★ 23.8k
81. 81validator.jsA JavaScript library for checking and cleaning up strings, like emails, dates, and URLs.★ 23.7k
82. 82React Starter KitA full-stack React starter template with auth, billing, and database wiring, meant for Cloudflare Workers.★ 23.7k
83. 83LivewireA PHP framework for Laravel that builds interactive web components without writing JavaScript.★ 23.6k
84. 84PassportExpress-compatible authentication middleware for Node.js that uses pluggable strategies.★ 23.5k
85. 85fasthttpA Go HTTP library tuned for speed, aimed at high-volume servers and clients.★ 23.5k
86. 86GuzzleA PHP library for sending HTTP requests to web services, both synchronously and asynchronously.★ 23.4k
87. 87API Security ChecklistA checklist of security measures to consider when designing, testing, and releasing an API.★ 23.3k
88. 88PhoenixA web framework for Elixir for building web apps and APIs, from prototype to production.★ 23.2k
89. 89n8n-MCPAn MCP server that gives AI assistants knowledge of n8n nodes so they can help build n8n workflows.★ 23.2k
90. 90IPFSA peer-to-peer protocol for sharing and finding files without a central server.★ 23.1k
91. 91chiA small, standard-library-compatible router for building Go HTTP and REST API services.★ 23k
92. 92SwiftyJSONA Swift library that makes reading JSON data simpler and safer than Foundation's built-in parsing.★ 22.9k
93. 93HysteriaA proxy tool that tunnels internet traffic over a QUIC-based protocol, built to work on lossy networks.★ 22.8k
94. 94wsA Node.js library for building WebSocket clients and servers, with a focus on speed and testing.★ 22.8k
95. 95Sails.jsA Node.js web framework for building MVC-style apps and APIs, with realtime features like chat.★ 22.8k
96. 96learn_python3_spiderA Chinese-language tutorial series that teaches Python web scraping from beginner to advanced.★ 22.3k
97. 97DNSHEFree subdomains for developers, with DNS management, a REST API, and free renewal before expiry.★ 22k
98. 98loA Go library of Lodash-style helpers for slices, maps, strings and channels, built on generics.★ 21.4k
99. 99MonologA PHP logging library that writes logs to files, sockets, email, databases and web services.★ 21.4k
100. 100ChatGPT Retrieval PluginA self-hosted backend that lets ChatGPT and other OpenAI tools search your own documents by meaning.★ 21.3k
101. 101Clean Architecture Solution TemplateA .NET project template that generates a starter ASP.NET Core app with Clean Architecture layers.★ 20.7k
102. 102fxA terminal tool for viewing and processing JSON interactively.★ 20.7k
103. 103litemallA small open-source online shop system with a Spring Boot backend, admin panel, and WeChat mini-program storef★ 20.4k
104. 104GraphQL.jsJavaScript reference implementation of GraphQL, a query language for APIs.★ 20.3k
105. 105knexA JavaScript library for building SQL queries across several databases with one API.★ 20.3k
106. 106validatorA Go library that checks whether structs and fields hold valid data, using tags on struct fields.★ 20.2k
107. 107nginx-proxyRuns nginx in Docker and auto-configures it to route web traffic to your other containers.★ 19.9k
108. 108Apollo ClientA JavaScript and TypeScript library for loading and caching GraphQL data in web apps.★ 19.8k
109. 109yudao-cloudA Java enterprise admin system and user mini-program built on Spring Cloud microservices, MIT licensed.★ 19.7k
110. 110docker-mailserverA self-hosted email server packaged as a Docker container, with SMTP, IMAP and anti-spam built in.★ 19.7k
111. 111YaakA desktop app for sending and organizing API requests across REST, GraphQL, gRPC, WebSocket and SSE.★ 19.4k
112. 112ElysiaA TypeScript web framework for building HTTP servers, designed to run on Bun.★ 19.3k
113. 113AdonisJSA TypeScript web framework for building web apps and API servers on Node.js.★ 19.2k
114. 114EggA Node.js framework built on Koa for building larger server-side apps, with plugins and process management.★ 19k
115. 115WaspA framework that builds React, Node.js and Prisma web apps from a short declarative spec.★ 18.8k
116. 116SanicA Python web framework for building fast asynchronous web apps and APIs.★ 18.6k
117. 117mysqljsA pure JavaScript MySQL client for Node.js that talks directly to MySQL servers.★ 18.6k
118. 118Clean ArchitectureA starter template for building ASP.NET Core apps using the Clean Architecture pattern.★ 18.5k
119. 119SQLModelA Python library for working with SQL databases using Python classes, built on Pydantic and SQLAlchemy.★ 18.5k
120. 120NebulaOpen-source tool that links computers across the internet into one private, encrypted network.★ 18.5k
121. 121.NETThe open-source runtime that runs .NET apps, plus its core libraries and the dotnet host.★ 18.4k
122. 122DocsGPTSelf-hosted platform for AI agents that answer from your own documents, with any model.★ 18.4k
123. 123pinoA fast JSON logger for Node.js that writes structured log lines.★ 18.3k
124. 124GOSTA command-line proxy and tunnel tool that forwards traffic over many protocols, written in Go.★ 18.3k
125. 125jsonwebtokenA Node.js library for creating and checking JSON Web Tokens (JWTs).★ 18.2k
126. 126CodeIgniterA lightweight PHP framework for building web applications, originally from EllisLab.★ 18.2k
127. 127rqliteA small SQLite-based SQL database that runs on several machines and keeps working if one fails.★ 17.9k
128. 128node-redisA Redis client library for Node.js, written in TypeScript, for talking to Redis from JavaScript code.★ 17.6k
129. 129RedwoodGraphQLA React web framework with an optional GraphQL API, built on Prisma; the README also promotes a newer sibling ★ 17.6k
130. 130JustAuthA Java library that adds third-party social login (GitHub, Google, WeChat and many more) to your app.★ 17.5k
131. 131DDNS-GOKeeps a domain name pointed at your home or office public IP, updating DNS records automatically.★ 17.5k
132. 132EffectA TypeScript library for building typed, maintainable production apps with error handling and concurrency.★ 17.5k
133. 133libSQLAn open-source fork of SQLite that accepts outside contributions.★ 17.3k
134. 134kyA tiny HTTP client for JavaScript that wraps the Fetch API with simpler calls and error handling.★ 17.1k
135. 1357days-golangA tutorial series that builds a web framework, cache, ORM, and RPC library from scratch in Go.★ 17k
136. 136cpp-httplibA single-header C++11 library for building HTTP/HTTPS servers and clients.★ 17k
137. 137KCPA small C library that adds fast, reliable retransmission on top of UDP.★ 17k
138. 138PostalSelf-hosted mail server for sending and receiving email from your own websites and apps.★ 16.9k
139. 139Pion WebRTCA Go library for building WebRTC real-time audio, video, and data connections.★ 16.9k
140. 140rbenvA tool that switches between Ruby versions per project on Unix-like systems.★ 16.7k
141. 141superagentA small JavaScript library for making HTTP requests in Node.js and browsers.★ 16.6k
142. 142zhengA Java/Spring starter kit of modular enterprise services: user permissions, CMS, payments, WeChat, storage and★ 16.6k
143. 143CarbonA PHP library that makes working with dates and times simpler than the built-in DateTime class.★ 16.6k
144. 144OpenWASelf-hosted gateway that lets your software send and receive WhatsApp messages through an API.★ 16.5k
145. 145hyperA low-level HTTP library for Rust, used to build HTTP clients and servers.★ 16.4k
146. 146ScalarTurns OpenAPI/Swagger documents into interactive API docs and includes an API testing client.★ 16.4k
147. 147Next.js SaaS StarterA starter template for a subscription web app with login, Stripe payments, and a dashboard.★ 16.2k
148. 148PentestGPTAI agent that runs penetration tests and CTF challenges in stages, with human-in-the-loop legacy mode.★ 16.2k
149. 149Open SaaSFree, open-source starter kit for building a SaaS web app with React, Node.js and Prisma.★ 16.2k
150. 150discord.pyA Python library for writing bots and apps that connect to Discord's API.★ 16.2k
151. 151MailHogA fake mail server for testing: catches outgoing email and shows it in a web inbox.★ 16.2k
152. 152FlareSolverrA local proxy server that opens a real browser to get past Cloudflare checks for your requests.★ 16.1k
153. 153transfer.shCommand-line file sharing: upload a file with curl and get a download link, self-hosted.★ 15.9k
154. 154py-spyA sampling profiler for Python that shows where a running program spends its time, without changing its code.★ 15.6k
155. 155GJSONA fast Go library for pulling values out of JSON using simple dot-style paths.★ 15.6k
156. 156OAuth2 ProxyA reverse proxy that adds Google, Microsoft, GitHub or OIDC login in front of your web apps.★ 15.3k
157. 157FeathersA TypeScript/JavaScript framework for building web APIs and real-time apps.★ 15.3k
158. 158Cloud MailSelf-hosted email service you run on Cloudflare, letting you create many mailboxes on one domain.★ 15.3k
159. 159Dogecoin CoreOpen-source software for running a Dogecoin cryptocurrency node and wallet.★ 15.2k
160. 160BrotliA lossless compression format and reference library that shrinks data more than deflate at similar speed.★ 15.1k
161. 161gotA Node.js library for making HTTP requests, with retries, timeouts, and JSON support.★ 15k
162. 162AjvA fast library that checks whether JSON data matches a schema, for Node.js and browsers.★ 14.9k
163. 163CanopyOfficial Go implementation of the Canopy Network blockchain protocol, currently in alphanet.★ 14.7k
164. 164antsA Go library that caps and reuses goroutines through a fixed-size worker pool.★ 14.5k
165. 165KeystoneJSArchived Node.js CMS and web app framework built on Express and Mongoose, with an auto-generated admin UI.★ 14.5k
166. 166supertestA Node.js library for writing HTTP tests against your server with a chainable API.★ 14.4k
167. 167DrogonA C++ web framework for building fast, asynchronous HTTP servers and REST APIs★ 14.4k
168. 168Intervention ImageA PHP library for creating and editing images, using GD, Imagick or libvips underneath.★ 14.4k
169. 169pgxA Go library for connecting to and querying PostgreSQL databases.★ 14.4k
170. 170robfig/cronA Go library for running functions on a cron-style schedule inside your own program.★ 14.2k
171. 171skynetA Lua-based actor-model framework for building multi-user servers, often used for games.★ 14.2k
172. 172Blitz.jsA toolkit that adds full-stack features on top of Next.js, built with Prisma.★ 14.1k
173. 173RyeA Python project and package manager, now archived and superseded by uv.★ 14.1k
174. 174Modular Monolith with DDDA sample .NET application showing a modular monolith built with Domain-Driven Design, meant as a reference imp★ 14.1k
175. 175PhpSpreadsheetA pure PHP library for reading and writing Excel, LibreOffice Calc and other spreadsheet files.★ 14k
176. 176Piggy MetricsA sample personal-finance app built as a tutorial for microservices with Spring Boot, Spring Cloud and Docker.★ 14k
177. 177Apollo ServerA JavaScript GraphQL server that works with Express, Koa, Hapi and similar Node frameworks.★ 14k
178. 178json-iteratorA drop-in replacement for Go's standard encoding/json package that aims to be faster.★ 13.9k
179. 179AsynqA Go library that runs background tasks on worker processes, using Redis as the queue.★ 13.8k
180. 180FlysystemA PHP library that gives one file API for local disks, cloud storage and other filesystems.★ 13.6k
181. 181mimallocA small, fast general-purpose memory allocator (malloc replacement) written in C.★ 13.5k
182. 182GotenbergA Docker-based API that converts documents such as HTML, URLs, and Office files to PDF.★ 13.5k
183. 183PeerJSA JavaScript library that lets browsers connect directly to each other for data and video/audio calls.★ 13.5k
184. 184DataLoaderA small JavaScript helper that batches and caches data requests to cut down on repeated calls to databases or ★ 13.4k
185. 185Portkey AI GatewayOpen-source gateway that routes requests to many AI models through one API, with guardrails.★ 13.3k
186. 186GoFrameGo framework for building software projects, per its description.★ 13.3k
187. 187node-postgresA non-blocking PostgreSQL client for Node.js, written in pure JavaScript.★ 13.2k
188. 188CodisA proxy that spreads Redis data across many servers and lets you add or remove them while running.★ 13.2k
189. 189RevelA full-stack web framework for building web apps in the Go language.★ 13.2k
190. 190cJSONA small, single-file JSON parser and writer library for C programs.★ 13.1k
191. 191swagGenerates Swagger 2.0 API docs for Go projects from code comments.★ 13k
192. 192laravel-permissionA Laravel package for assigning roles and permissions to users, stored in your database.★ 13k
193. 193GraphileA monorepo of GraphQL tools, including Grafast and PostGraphile for building APIs from PostgreSQL.★ 12.9k
194. 194grpcurlA command-line tool for calling gRPC servers, similar to how curl works for HTTP.★ 12.9k
195. 195dioA Dart/Flutter library for making HTTP network requests with interceptors, uploads, downloads, and timeouts.★ 12.8k
196. 196go-adminA Gin and Vue starter kit for building admin back-office apps with login, roles, and user management.★ 12.8k
197. 197Laravel ExcelA Laravel wrapper around PhpSpreadsheet for exporting and importing Excel and CSV files.★ 12.7k
198. 198ramsey/uuidA PHP library for generating and working with UUIDs (unique identifiers).★ 12.6k
199. 199zerologA fast Go logging library that writes structured JSON with almost no memory allocation.★ 12.5k
200. 200saramaA Go library for connecting Go programs to Apache Kafka, MIT-licensed.★ 12.5k
201. 201TonicA Rust library for building gRPC clients and servers with async/await support.★ 12.5k
202. 202SinatraA small Ruby library for building web apps and APIs with minimal code.★ 12.5k
203. 203PageHelperA MyBatis plugin that adds paging to SQL queries in Java projects.★ 12.3k
204. 204SlimA small PHP framework for building web apps and APIs with routing and PSR-7 support.★ 12.3k
205. 205Aureus ERPFree, open-source ERP for running accounting, inventory, sales and HR in one place, built on Laravel.★ 12.2k
206. 206MulterNode.js middleware that handles file uploads sent as multipart/form-data.★ 12.1k
207. 207GarnetA fast, Redis-compatible cache and key-value store written in C# by Microsoft Research.★ 12.1k
208. 208TelethonPython library for building Telegram clients and bots using the MTProto API.★ 12.1k
209. 209Cloudflare 临时邮箱Free temporary email service you deploy yourself on Cloudflare, with attachments and IMAP/SMTP support.★ 12k
210. 210FastAPI-MCPTurns the endpoints of a FastAPI app into MCP tools that AI assistants can call, with auth.★ 12k
211. 211peeweeA small Python ORM for working with PostgreSQL, MySQL, and SQLite databases.★ 12k
212. 212ASP.NET BoilerplateA C# application framework for building web apps with DDD structure and multi-tenancy, now end-of-support.★ 12k
213. 213PomeloA Node.js framework for building multiplayer game servers and real-time apps.★ 11.9k
214. 214class-validatorValidates class properties using TypeScript decorators, for browser and Node.js.★ 11.9k
215. 215quic-goA Go library implementing the QUIC transport protocol and HTTP/3, with no cgo dependency.★ 11.8k
216. 216RestyA Go library for making HTTP, REST, and SSE requests with less boilerplate.★ 11.8k
217. 217ZappaDeploys Python web apps (Flask, Django and others) to AWS Lambda as serverless functions.★ 11.8k
218. 218Comp AI CRMAn open-source CRM built so AI agents can run research and keep records themselves.★ 11.8k
219. 219VoyagerA admin panel for Laravel apps that builds database-backed management screens.★ 11.8k
220. 220EmailValidatorA PHP library that checks whether an email address is well-formed under several email standards.★ 11.6k
221. 221MartiniA small Go web framework for building modular web apps and services; no longer maintained.★ 11.6k
222. 222H2OA fast web server for HTTP/1.x, HTTP/2, and HTTP/3 (experimental), written in C.★ 11.6k
223. 223WorkermanA PHP framework for building fast, event-driven network servers over HTTP, WebSocket, and TCP.★ 11.5k
224. 224BenchmarkDotNetA .NET library that turns C# methods into repeatable performance benchmarks.★ 11.5k
225. 225BaileysA TypeScript/JavaScript library for building WhatsApp Web clients over WebSockets, without a browser.★ 11.5k
226. 226FrankenPHPA PHP web server built on Caddy that can run PHP apps faster and add HTTPS automatically.★ 11.5k
227. 227jwt-authJSON Web Token authentication package for Laravel and Lumen PHP apps.★ 11.5k
228. 228BrasilAPIA free public API that gathers Brazilian data (like postal codes) into one place.★ 11.4k
229. 229jsoupA Java library for parsing, scraping, editing, and cleaning HTML and XML.★ 11.4k
230. 230Json.NETA widely used .NET library for reading and writing JSON data, under the MIT license.★ 11.3k
231. 231TweepyA Python library for working with the Twitter/X API.★ 11.2k
232. 232EOSIOOpen-source blockchain software for building smart-contract apps; the repo is archived.★ 11.2k
233. 233http-proxy-middlewareNode.js middleware that forwards HTTP requests from your server to another target, with simple configuration.★ 11.1k
234. 234laravel-adminA PHP/Laravel library that builds CRUD admin backends from a few lines of code.★ 11.1k
235. 235小智 (Xiaozhi)Self-hosted backend server that lets ESP32 voice-assistant devices talk to AI models.★ 11.1k
236. 236Frappe FrameworkA low-code Python and JavaScript framework for building business web apps with a built-in admin.★ 11k
237. 237eShopA sample .NET online shop showing how to build a multi-service e-commerce app with Aspire.★ 11k
238. 238Doctrine InstantiatorA PHP library that creates class instances without calling their constructors.★ 11k
239. 239OrleansA .NET framework for building distributed apps using 'grains', objects that stay available across many servers★ 10.9k
240. 240MailpitA local fake mail server that catches test emails and shows them in a web UI.★ 10.8k
241. 241Java-WebSocketA simple Java library for WebSocket clients and servers, written entirely in Java.★ 10.8k
242. 242gqlgenA Go library that generates GraphQL server code from a schema you write.★ 10.8k
243. 243HelmetExpress middleware that sets secure HTTP response headers with one line of code.★ 10.7k
244. 244jwt-goGo library for creating, signing, and verifying JSON Web Tokens. Archived; use golang-jwt/jwt instead.★ 10.7k
245. 245node-gypA command-line tool that compiles C/C++ native addons for Node.js.★ 10.7k
246. 246restifyA Node.js framework for building REST APIs using connect-style middleware.★ 10.7k
247. 247PetalsRun big language models by sharing the work across volunteers' GPUs, BitTorrent-style.★ 10.7k
248. 248GoDotEnvA Go library and command that loads variables from a .env file into the environment.★ 10.7k
249. 249Mobile DetectA PHP class that tells whether a visitor's device is a phone or tablet.★ 10.7k
250. 250ohaA command-line tool that sends many HTTP requests to a web server and shows live results.★ 10.7k
251. 251microA tiny library for building small async HTTP services in Node.js.★ 10.6k
252. 252thumborAn HTTP server that crops, resizes and filters images on demand via URL parameters.★ 10.5k
253. 253RectorAutomatically upgrades and refactors PHP code, from PHP 5.3 code up to newer PHP versions.★ 10.5k
254. 254node-interviewA study guide of topics and questions used to hire senior Node.js backend developers.★ 10.5k
255. 255LuciaA simple, clean authentication library for TypeScript projects.★ 10.5k
256. 256SSPanel UIMA PHP web panel for managing proxy service users, nodes, billing and subscriptions.★ 10.4k
257. 257concA Go library that makes goroutine handling safer: scoped waits, panic capture, and simple worker pools.★ 10.4k
258. 258Practical ASP.NET CoreSmall, runnable ASP.NET Core sample projects for many .NET versions, with a README explaining each one.★ 10.4k
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