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  • 1
    Masonry

    Masonry

    A cascading grid layout plugin

    Masonry is a JavaScript grid layout library. It works by placing elements in optimal position based on available vertical space, sort of like a mason fitting stones in a wall. You’ve probably seen it in use all over the Internet. All sizing and styling of items is handled by your own CSS. tem sizes can be set with percentages for responsive layouts. With the masonry layout mode, set percentage-width columnWidth with element sizing. Set percentPosition: true so item positions are likewise set with percentages to reduce adjustment transitions on window resize. Unloaded images can throw off Masonry layouts and cause item elements to overlap. imagesLoaded resolves this issue. imagesLoaded is a separate script you can download at imagesloaded.desandro.com. Or, initialize Masonry after all images have been loaded.
    Downloads: 3 This Week
    Last Update:
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  • 2
    MathPHP

    MathPHP

    Powerful modern math library for PHP

    Math PHP is a library that brings advanced mathematical functions and data analysis capabilities to PHP applications. It covers a wide range of topics, including linear algebra, calculus, statistics, probability, and numerical analysis. Math PHP is designed for developers and data scientists who require precise and efficient mathematical computations in PHP, making it suitable for scientific computing and data processing.
    Downloads: 3 This Week
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  • 3
    Matter

    Matter

    Material Design Components in Pure CSS

    Material Design Components in Pure CSS. Materializing HTML at just one class per component.
    Downloads: 3 This Week
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  • 4
    Maya

    Maya

    Datetimes for Humans

    Maya is a Python library that simplifies working with datetime objects. It provides a human-friendly API for parsing, formatting, and manipulating dates and times, addressing common frustrations with Python's built-in datetime module.​
    Downloads: 3 This Week
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  • 5
    Memento.jl

    Memento.jl

    A flexible logging library for Julia

    Memento is a flexible hierarchical logging library for Julia.
    Downloads: 3 This Week
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  • 6
    Metro 4

    Metro 4

    Impressive component library for expressive web development

    Create your site quickly and effectively with Metro 4. Metro 4 is a free open-source impressive components library built on html, css, javascript. Using Metro 4 is very easy, you don't even need to know javascript to make fully functional websites that interact with the user. Metro 4 is an open source project. You can access to full source code on the GitHub and get Metro 4 with free license. Metro 4 is accessible in various ways. You can get Metro 4 from NPM, Nuget, GitHub, and GitLab. Metro 4 is an open source toolkit for developing with HTML, CSS, and JS. Quickly prototype your ideas or build your entire app with responsive grid system, extensive prebuilt components, and powerful plugins. Metro 4 developed to build websites in Windows Metro Style and include general styles, grid, layouts, typography, 100+ components and routines, 500+ built-in icons.
    Downloads: 3 This Week
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  • 7
    MixItUp 3

    MixItUp 3

    Library for animated filtering, sorting, insertion, removal and more

    MixItUp is a high-performance, dependency-free library for animated DOM manipulation, giving you the power to filter, sort, add and remove DOM elements with beautiful animations. MixItUp plays nice with your existing HTML and CSS, making it a great choice for responsive layouts and compatible with inline-flow, percentages, media queries, flexbox and more. MixItUp is open source and free to use for non-commercial, educational and non-profit use. For use in commercial projects, a commercial license is required. Most commonly, MixItUp is applied to a "container" of "target" elements, which could be a portfolio of projects, a list of blog posts, a selection of products, or any kind of UI where filtering and/or sorting would be advantageous. Targets can be filtered using any valid selector e.g. '.category-a', and are sorted via optional custom data attributes e.g. 'data-order'.
    Downloads: 3 This Week
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  • 8
    Mobile Detect

    Mobile Detect

    Mobile_Detect is a lightweight PHP class for detecting mobile devices

    Mobile-Detect is a lightweight PHP library that inspects the HTTP user agent string and HTTP headers to detect whether a request comes from a mobile, tablet, or desktop device. It includes a rich set of detection rules covering device brands, operating systems, and browser engines so developers can tailor responses (views, assets, or layouts) based on client form factor. Its API is simple: isMobile(), isTablet(), or deviceFamily() methods make branching logic intuitive. The library is used in server-rendered PHP apps, CMS themes, and frameworks to serve mobile-friendly templates or redirect users to mobile versions. Because it is pattern-driven and optimized for fast matching, it adds minimal runtime overhead to request handling. By abstracting away the complexity of UA sniffing, Mobile-Detect helps teams gracefully support multi-device clients without duplicating detection logic.
    Downloads: 3 This Week
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  • 9
    Mock Service Worker

    Mock Service Worker

    Seamless REST/GraphQL API mocking library for browser and Node.js

    Mock by intercepting requests on the network level. Seamlessly reuse the same mock definition for testing, development, and debugging. A dedicated layer of requests interception at your disposal. Keep your application's code and tests unaware of whether something is mocked or not. Request the same production resources and test the actual behavior of your app. Augment an existing API, or design it as you go, when there is none. Use Express-like routing syntax to capture outgoing requests. Parameters, wildcards, regular expressions, mocking has never been easier. Browser usage is what sets Mock Service Worker apart from other tools. Utilizing the Service Worker API, which can intercept requests for the purpose of caching, Mock Service Worker responds to captured requests with your mock definition on the network level. This way your application knows nothing about the mocking.
    Downloads: 3 This Week
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  • 10
    ModelingToolkitStandardLibrary.jl

    ModelingToolkitStandardLibrary.jl

    A standard library of components to model the world and beyond

    The ModelingToolkit Standard Library is a standard library of components to model the world and beyond.
    Downloads: 3 This Week
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  • 11
    Mordant

    Mordant

    Multiplatform text styling for Kotlin command-line applications

    Mordant is a multiplatform library for rendering styled text in the terminal. You can use it to add color and style to text, create tables, draw animations, and more.
    Downloads: 3 This Week
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  • 12
    MvvmCross Plugins DateTimeConverter

    MvvmCross Plugins DateTimeConverter

    A set of date and time converters

    A MvvmCross plugin that provides date and time conversion utilities for cross-platform applications, simplifying time zone and formatting tasks.
    Downloads: 3 This Week
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  • 13
    NGX-Translate

    NGX-Translate

    The internationalization (i18n) library for Angular

    NGX-Translate is an internationalization library for Angular. It lets you define translations for your content in different languages and switch between them easily. It gives you access to a service, a directive and a pipe to handle any dynamic or static content. NGX-Translate is also extremely modular. It is written in a way that makes it really easy to replace any part with a custom implementation in case the existing one doesn't fit your needs. The main part of the library is named core. You can use it on its own, but it is usually a good idea to add a loader to load your translations into your application. You can also extract the strings from your code with the extractor. This makes it really easy to start and maintain your translations. By default, there is no loader available. You can add translations manually using setTranslation but it is better to use a loader. You can write your own loader, or import an existing one.
    Downloads: 3 This Week
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  • 14
    NSubstitute

    NSubstitute

    A friendly substitute for .NET mocking libraries

    NSubstitute is designed for Arrange-Act-Assert (AAA) testing, so you just need to arrange how it should work, then assert it received the calls you expected once you're done. Because you've got more important code to write than whether you need a mock or a stub. It is an attempt to satisfy our craving for a mocking library with a succinct syntax that helps us keep the focus on the intention of our tests, rather than on the configuration of our test doubles. We've tried to make the most frequently required operations obvious and easy to use, keeping less usual scenarios discoverable and accessible, and all the while maintaining as much natural language as possible. There are already some great mocking libraries around for .NET, so why create another? We found that for all their great features, none of the existing libraries had the succinct syntax we were craving — the code required to configure test doubles quickly obscured the intention behind our tests.
    Downloads: 3 This Week
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  • 15

    Negroni

    Idiomatic HTTP Middleware for Golang

    Negroni is a middleware-focused library for Go with an idiomatic approach. It is similar to Martini, but comes in a small, non-intrusive package. Negroni is not a framework. It is designed to work directly with net/http. It is also BYOR (Bring Your Own Router), and plays well with most http routers available in the Go community by fully supporting net/http. Negroni is currently translated in a number of different languages, and comes with some default middleware that can be used for most applications and makes getting started with some of Negroni’s features a lot easier.
    Downloads: 3 This Week
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  • 16
    Nock

    Nock

    HTTP server mocking and expectations library for Node.js

    HTTP server mocking and expectations library for Node.js. Nock can be used to test modules that perform HTTP requests in isolation. For instance, if a module performs HTTP requests to a CouchDB server or makes HTTP requests to the Amazon API, you can test that module in isolation. Nock works by overriding Node's http.request function. Also, it overrides http.ClientRequest too to cover for modules that use it directly.
    Downloads: 3 This Week
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  • 17
    Node-Casbin

    Node-Casbin

    An authorization library that supports access control models

    Node-Casbin is a powerful and efficient open-source access control library for Node.js projects, supporting various access control models like ACL, RBAC, and ABAC.
    Downloads: 3 This Week
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  • 18
    NoteDiscovery

    NoteDiscovery

    Your Self-Hosted Knowledge Base

    NoteDiscovery delivers a self-hosted knowledge base and note-taking platform that empowers individuals and teams to create, organize, and explore their notes locally, giving complete control over their data without relying on commercial services. It emphasizes lightweight performance and privacy, storing notes as plain markdown files that can be easily managed, synced, or version controlled while keeping everything on your own server. The interface is modern and responsive, offering themes, tags, interactive note browsing, and visualization tools like graph views for connected ideas, which makes it suitable for personal “second brain” systems or team wikis. Users benefit from features like fast search, outline navigation, favorites, and plugin extensibility, and the platform works well across devices thanks to its responsive design.
    Downloads: 3 This Week
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  • 19
    Notifme SDK

    Notifme SDK

    A Node.js library to send all kinds of transactional notifications

    A unified messaging API that enables sending notifications via multiple channels such as email, SMS, push, and chat.
    Downloads: 3 This Week
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  • 20
    OCaml

    OCaml

    The core OCaml system: compilers, runtime system, base libraries

    OCaml is a general-purpose, industrial-strength programming language with an emphasis on expressiveness and safety. OCaml’s powerful type system means more bugs are caught at compile-time, and large, complex codebases are easier to maintain. This makes it a good language for running critical code. At the same time, sophisticated inference makes the type system unobtrusive, creating a smooth developer experience. OCaml has two compilers. One is a bytecode compiler that generates small, portable executables and is very fast. The other is a native code compiler that produces more efficient machine code; its performance matches the highest standards of modern compilers. OCaml has great support for the most popular editors. VS Code is recommended for beginners, and for power users there is deep integration with Vim and Emacs. OCaml has a rich and dynamic community and best-in-class tooling.
    Downloads: 3 This Week
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  • 21
    OkReplay

    OkReplay

    Record and replay OkHttp network interaction in your tests

    OkReplay is a tool for recording and replaying HTTP interactions (specifically via OkHttp) in Android tests to improve determinism, test speed, and reliability. During the first run of a test annotated with @OkReplay, the library records outgoing HTTP requests and their responses into tape files. On subsequent runs, it intercepts those requests and serves the recorded responses instead of making real network calls. This allows tests to be executed offline, reduces flakiness due to network variability, and isolates the test environment from external dependencies. OkReplay integrates with testing frameworks such as JUnit and Espresso, so it fits naturally into Android testing pipelines. Because recording only happens when running with the annotation, production code paths remain unaffected. It’s especially useful when your app’s logic depends on network APIs and you want faster, more reliable unit or integration tests.
    Downloads: 3 This Week
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  • 22
    Open Food Facts

    Open Food Facts

    Native version of Open Food Facts on Android

    Open Food Facts is a collaborative food products database made by everyone, for everyone. Open Food Facts contributors gather information and data on food products from around the world, using mobile apps. Open Food Facts is a database of food products with ingredients, allergens, and nutrition facts… which allow us to compute scores like Nutri-Score, NOVA groups, and Eco-Score. Open Food Facts is a non-profit association of volunteers. 25,000+ contributors like you have added 3M+ products from 150 countries using our Android or iPhone apps to scan barcodes and upload pictures of products and their labels. Data about food is of public interest and has to be open. The complete database is published as open data and can be reused by anyone.
    Downloads: 3 This Week
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  • 23
    Open HTML to PDF

    Open HTML to PDF

    An HTML to PDF library for the JVM

    Open HTML to PDF is a pure-Java library for rendering a reasonable subset of well-formed XML/XHTML (and even some HTML5) using CSS 2.1 (and later standards) for layout and formatting, outputting to PDF or images. Use this library to generated nice looking PDF documents. But be aware that you can not throw modern HTML5+ at this engine and expect a great result. You must special craft the HTML document for this library and use it's extended CSS feature like #31 or #32 to get good results. Avoid floats near page breaks and use table layouts.
    Downloads: 3 This Week
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  • 24
    OpenAI .NET

    OpenAI .NET

    The official .NET library for the OpenAI API

    OpenAI .NET is the official client library for calling the OpenAI REST API from C# and other .NET languages, with first-class support for modern .NET patterns. It provides strongly typed clients across API areas (chat, audio, images, embeddings, moderations, batches, files, models, vector stores, responses, realtime, assistants) and works with .NET Standard 2.0 while the examples use .NET 8. You install it via NuGet and authenticate with an API key, ideally through environment variables or configuration rather than hardcoding. Every synchronous method has an async counterpart, and the library offers convenient streaming primitives for chat completions so you can process tokens as they arrive. It supports tool/function calling, structured outputs via JSON schema, audio input/output, image generation, embeddings, Whisper transcription, and assistants with retrieval augmented generation.
    Downloads: 3 This Week
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  • 25
    OpenGL Canvas

    OpenGL Canvas

    An Android library that provides views using openGL canvas

    android-openGL-canvas is a lightweight OpenGL rendering library for Android that emulates the Android Canvas API using OpenGL ES 2.0. It’s designed for developers who want to achieve hardware-accelerated 2D graphics on Android while maintaining the familiar Canvas drawing commands. Ideal for real-time graphics, games, or custom views, this project provides a fast and flexible alternative to Android’s software rendering without the need for a full game engine. It bridges the gap between low-level graphics APIs and high-level UI rendering.
    Downloads: 3 This Week
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