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Best Open Source library Libraries

A curated list of the most popular GitHub repositories tagged with library. Select any project to visualize its architecture and dive into the codebase using RepoMind's AI engine.

#1facebook/react

The library for web and native user interfaces.

243,261JavaScript
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#2ocornut/imgui

Dear ImGui: Bloat-free Graphical User interface for C++ with minimal dependencies

71,476C++
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#3ccxt/ccxt

A cryptocurrency trading API with more than 100 exchanges in JavaScript / TypeScript / Python / C# / PHP / Go

40,998Python
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#4curl/curl

A command line tool and library for transferring data with URL syntax, supporting DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, MQTTS, POP3, POP3S, RTMP, RTMPS, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, TELNET, TFTP, WS and WSS. libcurl offers a myriad of powerful features

40,893C
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#5heroui-inc/heroui

🚀 Beautiful, fast and modern React UI library. (Previously NextUI)

28,195TypeScript
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#6acheong08/ChatGPT

Reverse engineered ChatGPT API

27,977Python
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#7mojs/mojs

The motion graphics toolbelt for the web

18,670CoffeeScript
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#8framework7io/framework7

Full featured HTML framework for building iOS & Android apps

18,605JavaScript
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#9webview/webview

Tiny cross-platform webview library for C/C++. Uses WebKit (GTK/Cocoa) and Edge WebView2 (Windows).

13,915C++
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#10QuestPDF/QuestPDF

QuestPDF is a modern library for PDF document generation. Its fluent C# API lets you design complex layouts with clean, readable code. Create documents using a flexible, component-based approach.

13,821C#
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#11OpenGenus/cosmos

World's largest Contributor driven code dataset | Used in Quark Search Engine, @OpenGenus IQ, OpenGenus Visual Project

13,718C++
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#12barbajs/barba

Create badass, fluid and smooth transitions between your website’s pages

12,883TypeScript
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#13FreeRDP/FreeRDP

FreeRDP is a free remote desktop protocol library and clients

12,826C
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#14felangel/bloc

A predictable state management library that helps implement the BLoC design pattern

12,393Dart
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#15InsertKoinIO/koin

Koin - a pragmatic lightweight dependency injection framework for Kotlin & Kotlin Multiplatform

9,832Kotlin
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#16mrousavy/react-native-vision-camera

📸 A powerful, high-performance React Native Camera library.

9,195Swift
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#17klaudiosinani/signale

Highly configurable logging library

9,167JavaScript
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#18patrickmn/go-cache

An in-memory key:value store/cache (similar to Memcached) library for Go, suitable for single-machine applications.

8,790Go
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#19sbstjn/timesheet.js

JavaScript library for HTML5 & CSS3 time sheets

6,988JavaScript
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#20dgraph-io/ristretto

A high performance memory-bound Go cache

6,775Go
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#21grpc-ecosystem/go-grpc-middleware

Golang gRPC Middlewares: interceptor chaining, auth, logging, retries and more.

6,727Go
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#22needim/noty

⛔️ DEPRECATED - Dependency-free notification library that makes it easy to create alert - success - error - warning - information - confirmation messages as an alternative the standard alert dialog.

6,649JavaScript
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#23microsoft/FASTER

Fast persistent recoverable log and key-value store + cache, in C# and C++.

6,606C#
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