Open Source Libraries
Sort By:
Browse free open source Libraries and projects below. Use the toggles on the left to filter open source Libraries by OS, license, language, programming language, and project status.
-
The All-in-One Commerce Platform for Businesses - ShopifyShopify is a leading all-in-one commerce platform that enables businesses to start, build, and grow their online and physical stores. It offers tools to create customized websites, manage inventory, process payments, and sell across multiple channels including online, in-person, wholesale, and global markets. The platform includes integrated marketing tools, analytics, and customer engagement features to help merchants reach and retain customers. Shopify supports thousands of third-party apps and offers developer-friendly APIs for custom solutions. With world-class checkout technology, Shopify powers over 150 million high-intent shoppers worldwide. Its reliable, scalable infrastructure ensures fast performance and seamless operations at any business size.
-
Simple, Secure Domain RegistrationRegister or renew your domain and pay only what we pay. No markups, hidden fees, or surprise add-ons. Choose from over 400 TLDs (.com, .ai, .dev). Every domain is integrated with Cloudflare's industry-leading DNS, CDN, and free SSL to make your site faster and more secure. Simple, secure, at-cost domain registration.
-
1
QR Code generator library
High-quality QR Code generator library in Java, TypeScript/JavaScript
This project aims to be the best, clearest library for generating QR Codes. My primary goals are flexible options and absolute correctness. The secondary goals are compact implementation size and good documentation comments. This work is an independent implementation based on reading the official ISO specification documents. I believe that my library has a more intuitive API and shorter code length than competing libraries out there. The library is designed first in Java and then ported to TypeScript, Python, Rust, C++, and C. It is open source under the MIT License. For each language, the codebase is roughly 1000 lines of code and has no dependencies other than the respective language’s standard library. -
2
p5.js
Client-side JS platform for artists, designers and students to express
p5.js is a JavaScript library for creative coding, with a focus on making coding accessible and inclusive for artists, designers, educators, beginners, and anyone else! p5.js is free and open-source because we believe software, and the tools to learn it, should be accessible to everyone. Using the metaphor of a sketch, p5.js has a full set of drawing functionality. However, you’re not limited to your drawing canvas. You can think of your whole browser page as your sketch, including HTML5 objects for text, input, video, webcam, and sound. p5.js is an interpretation of Processing for today’s web. We hold events and operate with support from the Processing Foundation. For self-learners and animators, artists, game makers, creative-technologists, curriculum planners, designers, graphic designers, graphics editors, learning experience designers, project managers, software engineer, student, teachers, university faculty members, visualization researchers, etc. -
3
4tH compiler
A Forth compiler with a little difference
4tH is a Forth compiler with a little difference. Instead of the standard Forth engine it features a conventional compiler. 4tH is a very small compiler that can create bytecode, C-embeddable bytecode, standalone executables, but also works fine as a scripting language. It supports about 95% of the ANS Forth CORE wordset and features conditional compilation, pipes, files, assertions, forward declarations, enumerations, structures, suspended execution, recursion, include files, etc. It comes with an RPN calculator, BASIC interpreter, line editor, preprocessor, compiler, decompiler, C-source generator, a virtual machine, and a multitasking environment. -
4
RE/flex lexical analyzer generator
The regex-centric, fast lexical analyzer generator for C++
A C++ high-performance regex library and Flex-compatible lexical analyzer generator with full Unicode support, new indentation anchors, lazy quantifiers, and many other modern features. Accepts Flex lexer specification syntax and is compatible with Bison/Yacc parsers. Generates reusable source code that is easy to understand. Supports fast scanning of UTF-8/16/32 files, strings, and streams. The reflex scanner generator generates clean C++ lexer class code that is thread-safe. Generates Graphviz files to visualize state machine DFAs. RE/flex works seamlessly with Bison. Language: C++ License: BSD-3 Documentation: https://www.genivia.com/doc/reflex/html/index.html Repository: https://github.com/Genivia/RE-flex Changelog: see SF-README.md -
Gen AI apps are built with MongoDB AtlasMongoDB Atlas is the developer-friendly database used to build, scale, and run gen AI and LLM-powered apps—without needing a separate vector database. Atlas offers built-in vector search, global availability across 115+ regions, and flexible document modeling. Start building AI apps faster, all in one place.
-
5
VuePress
Minimalistic Vue-powered static site generator
Simplicity First. Minimal setup with markdown-centered project structure helps you focus on writing. Vue-Powered. Enjoy the dev experience of Vue + webpack, use Vue components in markdown, and develop custom themes with Vue. Performant. VuePress generates pre-rendered static HTML for each page, and runs as an SPA once a page is loaded. The fastest way to get your VuePress project setup is to use our create-vuepress-site generator which will help scaffold the basic VuePress site structure for you. You will then have the opportunity to configure your VuePress site’s metadata such as: project name, description, maintainer email, maintainer name, repository URL, etc. -
6
HTML++
Object-oriented generation of HTML code on .NET 4 Client Profile
This library allows you to generate HTML pages directly from your code in a strongly typed, compositional, safe and concise manner. Requires the .NET Framework 4 Client Profile only. It is licensed under LGPL, which means that you may use it in commercial products. The project logo is from Mariano Real, who kindly provided it under a Creative-Commons license. -
7
CLIck
a CLI generator and and SW library
CLIck allows you to create flat or hierarchical CLI (command line interfaces) in an extremely easy and quick way, supporting very popular features like history with command recalling, context-based auto-completion, tab-based command list, automatic command-line help, special characters, automatic structure builder, and much more. CLIck is written in ANSI C and tested on C and C++ applications on several architectures. It doesn't depend on any external library and uses only a very small subset of POSIX APIs. Despite the project name, you won't need your mouse at all! -
8
-
9
SimpleJPA
A simple JPA implementation
A simple JPA implementation with JDBC This is a simple implementation of JPA 1.0 -
Connect every part of your business to one bank accountNorth One is proudly built for small businesses, startups and freelancers across America. Make payments easily, keep tabs on your money and put your finances on autopilot through smart integrations with the tools you’re already using. North One was built to make managing money easy so you can focus on running your business. No more branches. No more lines. No more paperwork. Get complete access to your North One Account from your phone or computer, wherever your business takes you. Create Envelopes for taxes, payroll, rent, and anything else automatically.
-
10
(ml)Silkworm
(ml)Silkworm is an abstraction layer for PHP HTML and XML generation.
(ml)Silkworm, or just Silkworm, is a markup language library for PHP to aid in the creation of HTML and XML documents. Silkworm acts as an abstraction layer allowing you to focus solely on PHP when you're programming eliminating the need to worry about properly formatting your HTML \t\t<tags>\n manually. Silkworm generates nicely carriaged, returned and indented HTML or XML from your PHP files. The library is dynamic and can be used in a modular fashion allowing you to break up the document creation process into logical chunks throughout your program. -
11
An short but powerfull framework for PHP 5+. based in the Model View Controller (MVC), it can use Mysql, Microsoft Sql Server and partially Oracle
-
12
Assorted projects. General-purpose libraries for Python, C++, Scala, bash, and others. Meta-programming tools. System utilities. UI components. Web APIs. Configuration files. Benchmarks. Programming competition entries. And much more.
-
13
-
14
Some stuff for use with Silverlight & WPF: Mostly related to MVVM and WCF RIA Services. This library is *not* being actively developed anymore. In my spare time, I'm still developing further on the WPF side, because of a project I started 2008/2010. But I rarely push my updates to this Lib.
-
15
Clocklib
Javascript Clock library for HTML5
This small library adds customizable analog/digital clocks (by HTML5 data-* attributes). Very easy to use. Test Webpage: http://miguelalejandromorenobarrientos.github.io/clocklib/ -
16
DOMbasic
PHP pakage to create dynamic DOM elements. Follow the OOP paradigm, im
You can create complete websites that adhere to the standards validation of its structure. More flexible and lighter than the native PHP. It allows you to create any document labeling: HTML, XHTML, XML, ... It is designed for flexibility and dynamism, performance and low resource consumption. -
17
-
18
Provides a Java programmable only text file editor. No gui is available. It supplies most of the features you expect from an editor including selections.
-
19
IMPORTANT: This project has moved to Github: https://github.com/germanestevez/GLibWMI (English) GLibWMI is a Delphi library of components, focused on the Administration of Windows Systems. They are based on Windows WMI (Windows Management Instrumentation). (Spanish) GLibWMI es una librería/biblioteca de componentes para Delphi, enfocados a la Administración de Sistemas Windows. Están basados en la WMI de Windows (Windows Management Instrumentation).
-
20
-
21
GxApp
Open Utilities and/or Examples for GeneXus
Open utilities and/or examples for GeneXus, this includes: Example procedures Usercontrols Utilities Others... -
22
Ionflux Tools
Metaprogramming framework for C++ development with Python bindings
NOTICE: This repository of IFTools will no longer be maintained. You can find the current version at https://github.com/TehFlux/iftools iftools is an umbrella project for various libraries and utilities that facilitate application development in C++ with full Python bindings. It provides a rich set of features while still maintaining compatibility with other frameworks through a very low overhead and a lack of "tricks". iftools uses its own, easily extensible template system to provide a rich set of metaprogramming techniques for implementing features above the class level. -
23
IronMeta is an implementation of Alessandro Warth's OMeta metaprogramming system in C#. It provides a packrat parser generator that generates parsers for Parsing Expression Grammars that operate on arbitrary streams of objects.
-
24
JFling provides tools for (un)marshalling fixed length string data to and from java objects with typed properties. It's codegenerator uses plain csv files to generate fixed-length-string wrapper classes. (see our wiki 'Hosted Apps/Trac' for more info)
-
25
Use of annotations to specify constraints on methods. There are annotations available to perform common checks (i.e. a parameter has to be not null, an int value has to be positive, etc.) and to use a full-flavoured design by contract in java with suppor