Open Source JavaScript Software - Page 35
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JavaScript Software
Browse free open source JavaScript Software and projects below. Use the toggles on the left to filter open source JavaScript Software by OS, license, language, programming language, and project status.
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LaTeX.js
JavaScript LaTeX to HTML5 translator
This is a LaTeX to HTML5 translator written in JavaScript using PEG.js. latex.js for LaTeX is similar in spirit to marked for Markdown. LaTeX.js tries to be absolutely and uncompromisingly exact and compatible with LaTeX. The generated HTML is exactly what is meant to be output, down to the last space. The CSS makes it look like LaTeX output—except where impossible in principle, see limitations. -
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LemonadeJS
LemonadeJS is a 7KB reactive JavaScript micro-library
LemonadeJS is an ultra-lightweight, reactive JavaScript micro-library that makes building dynamic user interfaces simple and intuitive by providing two-way data binding and component reactivity without any external dependencies or build steps. At roughly 5–7 KB, it works directly in the browser or with bundlers like webpack, enabling developers to create reusable, reactive UI components using pure JavaScript, JSX, or TypeScript while avoiding heavy frameworks. Its core reactivity system tracks changes to component state and efficiently updates only the affected parts of the DOM, which improves performance for both small widgets and larger applications. The library also offers powerful template syntax and lifecycle hooks so you can manage state, effects, loops, and events in a clear and expressive way while keeping your code close to native JavaScript. -
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Lerna
A tool for managing JavaScript projects with multiple packages
Lerna is a tool for managing JavaScript projects with multiple packages. Many times splitting a large codebase into several independently versioned packages is necessary for code sharing. However, this can make testing and tracking changes across repositories quite difficult. As a solution to this, many projects organize their codebases into multi-package repositories. It is Lerna's job to manage these multi-package repositories, optimizing workflow and reducing the time and space requirements for numerous copies of packages in development and build environments. Lerna's primary functionalities are bootstrap, which links dependencies in the repo together; and publish, which helps publish any updated packages. It is important to note that Lerna is not a deployment tool for serverless monorepos. -
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Lightbox2
The original Lightbox script (v2)
Lightbox is small javascript library used to overlay images on top of the current page. It's a snap to setup and works on all modern browsers. Lightbox2 has been tested successfully in the following browsers, Internet Explorer, Chrome, Safari, Firefox, iOS Safari, iOS Chrome, Android Browser, and Android Chrome. The lightbox-plus-jquery.js file includes jQuery v2.x and supports IE 9+. If you want to support IE 6, 7, and 8, use your own copy of jQuery v1.x with lightbox.js. Lightbox is free to use in both commercial and non-commercial work. Make sure jQuery, which is required by Lightbox, is also loaded. -
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Lighthouse
Automated auditing, performance metrics, & best practices for the web
Lighthouse is an open-source, automated tool that analyzes and audits web apps and web pages in order to improve their quality. Lighthouse collects modern performance metrics and insights on developer best practices; auditing for performance, accessibility, SEO and more. After auditing it produces a report either in JSON or HTML. Included in the report is a reference doc that explains the importance of the audit and how to fix the problem areas, which you can use to improve the web app or web page. Lighthouse can be integrated directly into the Chrome DevTools with its own panel. To run it, you would simply have to select the Lighthouse panel and click on "Generate report". It can also be run from the command line, or as a Node module. -
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LiteStore
A lightweight, self-contained, RESTful, searchable, multi-format NoSQL
LiteStore is a lightweight static website CMS that uses SQLite as its backend. It enables users to create and manage simple content-driven websites without needing a complex CMS. LiteStore is designed for fast deployment, minimal setup, and efficient static page generation. -
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LoLLMs WEBUI
Local AI WebUI for running and managing large language models offlineA
lollms-webui is a locally hosted web interface designed to run and manage large language models without relying on external services. It provides users with a centralized environment to interact with multiple AI models, making it suitable for experimentation, development, and personal use. lollms-webui emphasizes offline capability, allowing users to maintain privacy and control over their data while still accessing advanced AI features. It integrates model management tools that help users download, configure, and switch between different language models with ease. It is built to be user-friendly while still offering advanced customization options for power users who want deeper control over model behavior. Additionally, it supports extensibility through plugins or modular components, enabling users to expand functionality as needed. Overall, it serves as a flexible platform for running AI locally with a focus on usability and adaptability. -
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Lux
Fast Go CLI tool for downloading videos from many streaming sites
Lux is an open source command-line tool designed for downloading videos from a wide variety of online media platforms. Written in the Go programming language, the project focuses on providing a fast and lightweight downloader that can retrieve media content directly from supported websites. Lux works by extracting video information from a given page and downloading the available streams to the user’s system. Lux supports downloading individual videos as well as playlists and can display multiple available quality options before the user selects which stream to download. It includes features for resuming interrupted downloads, allowing users to continue large downloads without starting over. It also provides network-related options such as proxy support and cookies to access restricted or authenticated content. With its modular architecture and command-line interface, Lux can function both as a standalone downloader and as a library. -
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MSON
Generate an app from JSON
The MSON compiler allows you to generate apps from JSON. The ultimate goal of MSON is to allow anyone to develop software visually, but you can also use pieces of MSON to turbo charge your development. MSON is a subset of JSON and comprised of just a few building blocks, yet it is as powerful as its non-declarative counterparts. MSON supports validation, inheritance, composition, pub/sub, access control, templating and various other features. MSON is particularly useful in software that generates other software, e.g. a form builder. This is because MSON is just JSON, so it is easy to consume, modify and store. MSON is framework agnostic, but the default mson-react rendering layer uses React and Material-UI to generate a UI. The rendering layer is pluggable and can be written to support any framework and UI library. The MSON library can also be used without any UI dependecies, which makes it great for things like data validation in both the front and back ends. -
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Markdown
WeChat Markdown Editor
WeChat Markdown Editor | A highly concise WeChat Markdown editor, that supports Markdown syntax, color palette selection, multi-image upload, one-click document download, custom CSS style, one-click reset, and other features. Markdown documents are automatically rendered into WeChat graphics and text in real-time, so you no longer have to worry about the typesetting of WeChat articles! As long as you know the basic Markdown syntax, you can make a simple and beautiful WeChat graphic. Chrome browser is recommended for best results. In addition, for domestic (China) friends, accessing Gitee Pages will be relatively faster. The existing open-source WeChat Markdown editor has complicated styles and does not meet my personal aesthetic needs. When I use them for article typesetting, I often have to make some changes myself, which is time-consuming and labor-intensive, so I did secondary development. -
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Markdown Here
Write email in Markdown and render them before sending
If you’ve ever found writing email with code in it a hassle, Markdown Here is the perfect solution for you. Markdown Here is a browser extension that lets you write emails in Markdown, and then renders them before sending. It can also let you write Google Groups posts, blog posts, Evernote notes, Wordpress posts and more in Markdown, even in TeX mathematical formulae! Markdown Here is available for Google Chrome, Firefox, Safari, Opera, and Thunderbird. It supports syntax highlighting (once language has been specified in a fenced code block), insert tables, source code snippets and more! Discover how easy it can be to format your emails with Markdown Here! -
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Markdownify MCP Server
Convert files and web content into clean, usable Markdown easily
Markdownify MCP is a Model Context Protocol server that converts many types of files and web content into clean Markdown. It supports formats such as PDFs, images, audio with transcription, DOCX, XLSX, and PPTX, along with web sources like YouTube transcripts, Bing results, and general webpages. Markdownify MCP is designed to simplify content extraction and make data easier to read, share, and reuse in structured workflows. Developers can install dependencies, build, and run the server locally, then extend functionality by modifying its TypeScript-based tools and server logic. It also allows retrieval of existing Markdown files, making it useful for documentation, research, and AI-assisted workflows. By standardizing content into Markdown, it helps unify inputs across different sources for better processing and integration with AI tools and developer environments. -
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Mercurius
Implement GraphQL servers and gateways with Fastify
Mercurius is a GraphQL adapter for Fastify. Caching of query parsing and validation. Automatic loader integration to avoid 1 + N queries. Just-In-Time compiler via graphql-jit. Federation support via @mercuriusjs/federation, including Subscriptions. Gateway implementation via @mercuriusjs/gateway, including Subscriptions. Batched query support. Customisable persisted queries. -
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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. -
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Milligram
A minimalist CSS framework
Milligram provides a minimal setup of styles for a fast and clean starting point. Just it! Only 2kb gzipped! It's not about a UI framework. Specially designed for better performance and higher productivity with fewer properties to reset resulting in cleaner code. Hope you enjoy it! There are some ways to get started. First, see all download options available below, then choose the most suitable option for your need. Now you should add the main file of the Milligram and the CSS Reset in the header of your project. Just that! The Button, an essential part of any user experience. Buttons come in three basic styles in Milligram: The button element has flat color by default, whereas .button-outline has a simple outline around, and .button-clear is entirely clear. The List is a very versatile and common way to display items. Milligram has three types of lists. -
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MindsDB
Making Enterprise Data Intelligent and Responsive for AI
MindsDB is an AI data solution that enables humans, AI, agents, and applications to query data in natural language and SQL, and get highly accurate answers across disparate data sources and types. MindsDB connects to diverse data sources and applications, and unifies petabyte-scale structured and unstructured data. Powered by an industry-first cognitive engine that can operate anywhere (on-prem, VPC, serverless), it empowers both humans and AI with highly informed decision-making capabilities. A federated query engine that tidies up your data-sprawl chaos while meticulously answering every single question you throw at it. MindsDB has an MCP server built in that enables your MCP applications to connect, unify and respond to questions over large-scale federated data—spanning databases, data warehouses, and SaaS applications. -
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NGINX Proxy Manager
Docker container for managing Nginx proxy hosts
Expose web services on your network. Free SSL with Let's Encrypt. Designed with security in mind. Perfect for home networks. Expose your private network Web services and get connected anywhere. Based on Tabler, the interface is a pleasure to use. Configuring a server has never been so fun. Configure other users to either view or manage their own hosts. Full access permissions are available. Built as a Docker Image, Nginx Proxy Manager only requires a database. Built in Let’s Encrypt support allows you to secure your Web services at no cost to you. The certificates even renew themselves! Easily create forwarding domains, redirections, streams and 404 hosts without knowing anything about Nginx. I created this project to fill a personal need to provide users with a easy way to accomplish reverse proxying hosts with SSL termination and it had to be so easy that a monkey could do it. -
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NProgress.js
A progress bar with realistic trickle animations
NProgress.js is a nanoscopic progress bar. Featuring realistic trickle animations to convince your users that something is happening! For Ajax'y applications. Inspired by Google, YouTube, and Medium. Fully customizable animations, percentage and progress settings. Add progress to your Ajax calls and make a fancy loading bar even without Turbolinks/Pjax. Create a loading bar, set a percentage, increment it as much as you like, make it complete the progress and customize it. -
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NSFWJS
Client-side indecent content checking powered by TensorFlow.js
NSFWJS is a simple JavaScript library that can quickly and quite accurately identify NSFW images, all in the client's browser. It is powered by TensorFlow.js and the NSFW detection model, and delivers around 90% accuracy that is improving each time. NSFWJS classifies images with percentages under five categories, namely: drawing and neutral, which are both safe for work; sexy, which includes sexually explicit images; and hentai and porn, which are pornographic drawings and images. NSFWJS offers a 'browserified' version, an NSFW filter web extension that filters out NSFW images from your browser, and also has a separate React Native app. -
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NemoClaw
NVIDIA plugin for secure installation of OpenClaw
NVIDIA NemoClaw is an open-source tool designed to simplify the deployment and management of always-on AI assistants using the OpenClaw ecosystem. It installs and configures the NVIDIA OpenShell runtime, which provides a secure environment for running autonomous AI agents. NemoClaw enables users to launch sandboxed agent environments that control network access, file permissions, and inference requests through policy-based security. The platform integrates with AI models such as NVIDIA Nemotron and supports multiple inference backends including cloud APIs, local NIM deployments, and vLLM. Through its command-line interface, developers can deploy, monitor, and manage AI assistants running inside isolated sandboxes. By combining sandbox orchestration, agent management, and AI model integration, NemoClaw provides a secure foundation for building and operating autonomous AI assistants. -
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Next Terminal
Open source interactive audit system that supports RDP, SSH, VNC,
The Next Terminal open-source project has gained nearly 3,000 Stars on GitHub and has a large number of users, so you can absolutely trust the stability of Next Terminal. You can access RDP, SSH, VNC, TELNET and other protocol assets in a system without plug-ins, just a browser. You can view the currently active sessions at any time, and monitor and block them. For character protocols, you can even restrict the execution and logging of certain commands. Next Terminal observes and logs every online resource, connection, interactive session and other security event in all environments. These events are recorded in a structured audit log, making it easy to see what is happening and who is responsible. Next Terminal is developed with Golang. After compilation, there is only one binary file, and the built-in sqlite can be used to store files. It is very lightweight and supports one-line command installation. -
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Nimiq Blockchain
JavaScript implementation of the Nimiq protocol
Nimiq is a unique open-source payment system. It empowers all humans with decentralized but easy payments. One-click creates a node in your browser. Send and receive directly to the blockchain and be truly independent. A simple, secure and censorship-resistant payment protocol, native to the web. Nimiq is a decentralized, censorship-resistant payment protocol native to the web, with its own diverse ecosystem of apps. The native NIM token is transacted within Nimiq as a store and transfer of value: it acts as digital cash. The cutting-edge, browser-first blockchain approach means that users directly connect to the blockchain with nothing more than a browser. Therefore anyone with an up-to-date browser can join the payment network directly, pay and accept payments without having to install software or rely on unnecessary intermediaries. This gives Nimiq its ‘it just works’ characteristic, which is further strengthened by an ethos of simplicity and ease of use. -
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NoSleep.js
Prevent display sleep, enable wake lock in any Android or iOS browser
Prevent display sleep and enable wake lock in all Android and iOS web browsers. Check out the live demo in any Android or iOS web browser. -
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Node Argon2
Node.js bindings for Argon2 hashing algorithm
A Node.js library for hashing passwords securely using the Argon2 key derivation function, a modern cryptographic algorithm. -
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NodeGit
Native Node bindings to Git
Asynchronous native Node bindings to libgit2. NodeGit will work on most systems out-of-the-box without any native dependencies. If you receive errors about libstdc++, which are commonly experienced when building on Travis-CI, you can fix this by upgrading to the latest libstdc++-4.9. If you wish to help contribute to NodeGit it is useful to build locally. If you encounter errors, you most likely have not configured the dependencies correctly. You will need libpcre, libpcreposix, libkrb5, libk5crypto, and libcom_err libraries installed on your Linux machine. When building locally, you will also need development packages for kerberos and pcre, so both pcre-config, and krb5-config utilities must be present on your machine.
