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  • 1
    Node.js

    Node.js

    Cross-platform JavaScript runtime environment

    ...The ecosystem is supported by npm, one of the largest package managers, providing access to thousands of libraries and tools. Node.js is widely used for backend development, real-time applications, and microservices architectures.
    Downloads: 31 This Week
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  • 2
    ACE-Step UI

    ACE-Step UI

    The Ultimate Open Source Suno Alternative

    ...The interface is useful for debugging, monitoring, or presenting step-by-step execution of complex systems. It supports dynamic updates, allowing users to observe how processes evolve in real time. The project emphasizes clarity and usability, making it easier to understand multi-step logic. It is particularly valuable in agent-based or workflow-driven applications. Its modular design allows integration into larger systems.
    Downloads: 12 This Week
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  • 3
    Yoast WordPress SEO

    Yoast WordPress SEO

    Yoast SEO for WordPress

    The Yoast SEO plugin is the most popular SEO tool for WordPress, offering comprehensive tools to optimize content for search engines. It provides real-time page analysis, readability checks, and automated metadata handling to improve website visibility.
    Downloads: 3 This Week
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  • 4
    Butterchurn

    Butterchurn

    Butterchurn is a WebGL implementation of the Milkdrop Visualizer

    Butterchurn is a WebGL-based music visualization engine that recreates the classic MilkDrop visualizer experience entirely in the browser using modern web technologies. It is designed to render complex, real-time audio-reactive graphics that respond dynamically to music input, producing highly immersive and fluid visual effects. The engine uses GPU acceleration through WebGL to achieve high performance, allowing it to handle intricate shader-based visualizations without overwhelming system resources. Butterchurn supports preset-based rendering, enabling users to load, customize, and switch between a wide variety of visual styles that evolve over time with the audio signal. ...
    Downloads: 10 This Week
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    99.99% Uptime for MySQL and PostgreSQL Databases

    Sub-second maintenance. 2x read/write performance. Built-in vector search for AI apps.

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  • 5
    MailDev

    MailDev

    Web Interface for viewing and testing emails during development

    MailDev is an SMTP server with a web interface designed for viewing and testing emails during development. It allows developers to inspect and debug emails sent from their applications without delivering them to real inboxes.
    Downloads: 1 This Week
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  • 6
    h265web.js

    h265web.js

    A HEVC/H.265 Web Player

    ...Its architecture separates parsing, decoding, and rendering, giving developers fine-grained control over how video data is handled and displayed. The system is designed to work with streaming data, allowing incremental feeding of video chunks and real-time decoding, which is useful for surveillance, streaming platforms, and custom media pipelines.
    Downloads: 6 This Week
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  • 7
    Karma

    Karma

    Test Runner for JavaScript

    ...The environment being one where they don't have to set up loads of configurations, but rather a place where developers can just write the code and get instant feedback from their tests. Because getting quick feedback is what makes you productive and creative. Test your code on real browsers and real devices such as phones, tablets or on a headless PhantomJS instance. Control the whole workflow from the command line or your IDE - just save a file and Karma will run all the tests. Describe your tests with Jasmine, Mocha, QUnit, or write a simple adapter for any framework you like. Developed for and maintained by the open source community at GitHub. ...
    Downloads: 1 This Week
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  • 8
    SwissGL

    SwissGL

    SwissGL is a minimalistic wrapper on top of WebGL2 JS API

    ...Acting as a "Swiss Army knife" for WebGL2, it simplifies shader, texture, and framebuffer management into a single, expressive interface that enables developers to write complex GPU workflows in just a few lines of code. The library centers around one main function that unifies rendering and compute operations, allowing the creation of particle systems, GPGPU effects, and real-time simulations entirely on the GPU. Despite its simplicity and small size (under 1000 lines of code), SwissGL demonstrates remarkable flexibility, from basic visual experiments to complex multi-pass rendering pipelines. It’s also designed as an exploration of minimalist graphics API design, serving as an early experimental step toward the upcoming WebGPU era.
    Downloads: 7 This Week
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  • 9
    Icestudio

    Icestudio

    Visual editor for open FPGA boards

    Visual editor for open FPGA boards. Built on top of the Icestorm project using Apio.
    Downloads: 14 This Week
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  • 10
    react-redux-firebase

    react-redux-firebase

    Redux bindings for Firebase. Includes React Hooks and Higher Order

    ...I wrote up a quick medium article explaining a bit about how, and why and showing how to start a new project with these tools. Out-of-the-box support for authentication (with auto-loading user profile from database/firestore). Full Firebase Platform Support Including Real-Time Database, Firestore, and Storage. Automatic binding/unbinding of listeners through React Hooks (useFirebaseConnect, useFirestoreConnect) or Higher Order Components (firebaseConnect and firestoreConnect). Population capability (similar to mongoose's populate or SQL's JOIN). Support small data ( using value ) or large datasets ( using child_added, child_removed, child_changed).
    Downloads: 2 This Week
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  • 11
    Size Limit

    Size Limit

    Calculate the real cost to run your JS app or lib

    Size Limit is a JavaScript performance budget tool that measures the real cost of your JavaScript bundle and prevents regressions by enforcing limits in CI. It calculates not just raw bundle size, but also download and execution time under configurable network conditions, giving a more realistic sense of what users experience. The tool is modular: it offers a CLI and multiple plugins (file, webpack, time) plus presets tailored to different use cases, from big single-page apps to small npm libraries. ...
    Downloads: 0 This Week
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  • 12
    Responsively App Development

    Responsively App Development

    A modified web browser that helps in responsive web development

    A tool for responsive web design, allowing developers to preview websites across multiple screen sizes.
    Downloads: 2 This Week
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  • 13
    Swagger Editor

    Swagger Editor

    An editor designed for Swagger

    Swagger Editor lets you edit Swagger API specifications in YAML inside your browser and to preview documentations in real time. Valid Swagger JSON descriptions can then be generated and used with the full Swagger tooling (code generation, documentation, etc). swagger-editor is a traditional npm module intended for use in single-page applications that are capable of resolving dependencies (via Webpack, Browserify, etc). swagger-editor-dist is a dependency-free module that includes everything you need to serve Swagger Editor in a server-side project, or a web project that can't resolve npm module dependencies. ...
    Downloads: 21 This Week
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  • 14
    aosabook

    aosabook

    The Architecture of Open Source Applications

    aosabook is the source repository for The Architecture of Open Source Applications, a book series about how real open-source systems are designed and built. The project collects the written material, source files, and build assets used to publish the books. Its purpose is educational, showing developers how experienced engineers solve complex design problems in actual software projects. The material is aimed at junior developers who want to learn architectural thinking, as well as more experienced programmers who want to compare approaches across systems. ...
    Downloads: 0 This Week
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  • 15
    CSS Grid Generator

    CSS Grid Generator

    Generate basic CSS Grid code to make dynamic layouts

    ...Once the layout is arranged, the tool generates the corresponding HTML and CSS you can copy into your project—thus bridging the gap between design and code. The interface supports drag-and-drop of “divs” into grid cells, and you can experiment with grid gaps, spans and layout refinements in real time. Because it removes the barrier of hand-writing complex grid-template or grid-area definitions, it’s particularly useful for designers who are less comfortable with CSS or want rapid prototyping of grid layouts.
    Downloads: 2 This Week
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  • 16
    Detox

    Detox

    Gray box end-to-end testing and automation framework for mobile apps

    High velocity native mobile development requires us to adopt continuous integration workflows, which means our reliance on manual QA has to drop significantly. Detox tests your mobile app while it's running in a real device/simulator, interacting with it just like a real user. The most difficult part of automated testing on mobile is the tip of the testing pyramid - E2E. The core problem with E2E tests is flakiness, tests are usually not deterministic. We believe the only way to tackle flakiness head on is by moving from black box testing to gray box testing. ...
    Downloads: 0 This Week
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  • 17
    ZetaJS

    ZetaJS

    JS wrapper for ZetaOffice in the browser

    The zeta.js library provides the facilities to run an instance of ZetaOffice integrated into your web site, allowing you to control it with JavaScript code via the LibreOffice UNO technology. Use cases range from an in-browser office suite that looks and feels just like its desktop counterpart, to fine-tuned custom text editing and spreadsheet capabilities embedded in your website, to a headless zetajs instance that does document conversion in the background.
    Downloads: 3 This Week
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  • 18
    Hypermind

    Hypermind

    The high-availability solution to a problem that doesn't exist

    ...Alongside counting nodes, the project also supports ephemeral chat over its mesh network, allowing users to send messages directly to local peers or broadcast via a gossip protocol without storing chat history. The project uses probabilistic data structures like HyperLogLog for efficient estimation of unique peers and provides real-time visualizations and themes for exploring the swarm.
    Downloads: 0 This Week
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  • 19
    CodeMirror 5

    CodeMirror 5

    In-browser code editor (version 5, legacy)

    CodeMirror is a versatile text editor implemented in JavaScript for the browser. It is specialized for editing code, and comes with a number of language modes and addons that implement more advanced editing functionality. A rich programming API and a CSS theming system are available for customizing CodeMirror to fit your application, and extending it with new functionality. CodeMirror 5 is a JavaScript library that provides an embeddable code editor for web applications, featuring...
    Downloads: 3 This Week
    Last Update:
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  • 20
    Loop Engineering

    Loop Engineering

    Practical patterns, starters & CLI tools for loop engineering with AI

    ...It explains core building blocks such as scheduling, worktrees, skills, plugins, connectors, sub-agents, and persistent memory or state. The repository includes production loop patterns, quickstarts, starters, checklists, safety notes, and real-world stories. It also provides CLI tools such as loop-audit, loop-init, and loop-cost to scaffold, evaluate, and estimate agent loop workflows.
    Downloads: 9 This Week
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  • 21
    cypress

    cypress

    Fast, easy and reliable testing for anything that runs in a browser

    ...Fast, easy and reliable testing for anything that runs in a browser. Installing Cypress is simple. No dependencies, extra downloads, or changes to your code required. Write tests easily and quickly, and watch them execute in real time as you build your web application. Debugging your tests in CI is as easy as running tests locally. With built in parallelization and load balancing. Record CI test results, screenshots and video, and view aggregated, next-level insights in your dashboard. Build up a suite of CI tests, record their results and gain powerful insights. ...
    Downloads: 9 This Week
    Last Update:
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  • 22
    DevExtreme

    DevExtreme

    HTML5 JavaScript Component Suite for Responsive Web Development

    ...The library includes more than 80 components covering data grids, charts, schedulers, forms, editors, and navigation elements, making it suitable for complex business applications like dashboards, CRM systems, and SaaS platforms. A key strength of DevExtreme is its built-in data layer, which enables efficient handling of large datasets, real-time updates, and server-side operations such as filtering and sorting. The components are responsive and accessible, ensuring compatibility across devices, screen sizes, and assistive technologies.
    Downloads: 0 This Week
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  • 23
    vue2-elm

    vue2-elm

    Large single page application with 45 pages built on vue2 + vuex

    ...It places strong emphasis on responsive UI, transitions, and user feedback patterns that feel app-like on mobile devices. Developers can study API consumption patterns and mock data handling to simulate real production constraints. As a learning resource, it gives a practical playground for debugging, performance considerations, and code readability in a real-world scale example
    Downloads: 0 This Week
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  • 24
    CKEditor 5

    CKEditor 5

    Powerful rich text editor framework with a modular architecture

    CKEditor 5 is a powerful rich text editor framework with a modular architecture, modern integrations, and features like collaborative editing. CKEditor 5 provides every type of WYSIWYG editing solution imaginable. From editors similar to Google Docs and Medium, to Slack or Twitter like applications, all is possible within a single editing framework. Builds are ready-to-use solutions to common editing needs. Every build can be customized to include a completely custom set of features....
    Downloads: 10 This Week
    Last Update:
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  • 25
    bootstrap-validate

    bootstrap-validate

    A simple Form Validation Utility for Bootstrap 3, Bootstrap 4

    A simple Form Validation Utility for Bootstrap 3, Bootstrap 4 for Humans.
    Downloads: 0 This Week
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