Open Source JavaScript Software - Page 19
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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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Build Agents and Models on One PlatformGemini Enterprise Agent Platform is Google Cloud's comprehensive platform for developers to build, scale, govern, and optimize agents and models. Choose from Google's most advanced models and third-party models like Anthropic's Claude Model Family.
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Element
A glossy Matrix collaboration client for the web
Element, formerly known as Vector and Riot, is a glossy Matrix collaboration client built using the Matrix React SDK. It offers teams, friends and organizations a secure, all in one chat app that is protected from pesky ads and data mining methods. All communications are done through the open global Matrix network, secured with end-to-end encryption. Element gives you all the services you need from a chat app: group chat, video calls, file sharing and more-- all done securely and in total privacy. Element has three different tiers of support for different environments, the most supported being the latest versions of Chrome, Firefox, and Safari on desktop OSes. -
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EtherCalc
Open source web spreadsheet
EtherCalc is an open source, web-based spreadsheet that allows multiple users to collaborate and work remotely and in real time. Users can edit the same spreadsheet at the same time, with changes instantly reflected on screen. It accepts various mathematical formulae and other functions, and supports several default text formatting directives as well. It can be used for just about anything you’d need a desktop spreadsheet for-- accounting, inventory, scheduling, list management and so much more. EtherCalc is the improved successor to SocialCalc, optimized for simultaneous editing. It’s a great open source alternative to Google sheets, without pesky logins or editing locks. -
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Flatbush
A very fast static spatial index for 2D points and rectangles in JS
A really fast static spatial index for 2D points and rectangles in JavaScript. An efficient implementation of the packed Hilbert R-tree algorithm. Enables fast spatial queries on a very large number of objects (e.g. millions), which is very useful in maps, data visualizations and computational geometry algorithms. -
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Freyr.js
A tool for downloading songs from music streaming services
A Node.js tool for searching and downloading music from multiple online sources, including streaming platforms. -
MongoDB Atlas runs apps anywhereMongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
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Homer
A very simple static homepage for your server
A dead simple static HOMepage for your servER to keep your services on hand, from a simple yaml configuration file. It's meant to be served by an HTTP server, it will not work if you open the index.html directly over file:// protocol. Title, icons, links, colors, and services can be configured in the config.yml file (located in /assets directory once built, or in the public/assets directory in development mode), using yaml format. null value or missing keys will be ignored and value from the config.yml will be used if available. Empty values (either in config.yml or the endpoint data) will hide the element. -
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Infoooze
A OSINT tool which helps you to quickly find information effectively.
infoooze is an open-source information-gathering tool for cybersecurity and OSINT (Open-Source Intelligence) purposes. It automates the process of collecting public data about domains, emails, IP addresses, and more. -
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Journiv
Self hosted private journaling app
Journiv is a modern self-hosted private journaling platform that puts privacy and ownership at the forefront of personal reflection and mood tracking. Built as a complete journaling solution, Journiv includes prompt-based entries, mood logs, advanced search, media uploads, and intuitive analytics that let you explore patterns over time without relying on external cloud services. Because it runs on your own infrastructure (e.g., via Docker), all of your entries, moods, and memories stay under your direct control, making it a strong alternative to commercial journaling apps that collect data. The app is currently in beta and sees active development with improvements such as draft support, Markdown editing, and multimedia integration. It combines a clean, distraction-free interface with rich features like tagging, calendar views, and customizable journals, appealing to users who want both useful tools and full data sovereignty in their self-hosted ecosystems. -
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KaTeX
Fast math typesetting for the web.
KaTeX is a fast, easy-to-use JavaScript library for TeX math rendering on the web. Fast: KaTeX renders its math synchronously and doesn't need to reflow the page. See how it compares to a competitor in this speed test. Print quality: KaTeX's layout is based on Donald Knuth's TeX, the gold standard for math typesetting. Self contained: KaTeX has no dependencies and can easily be bundled with your website resources. Server side rendering: KaTeX produces the same output regardless of browser or environment, so you can pre-render expressions using Node.js and send them as plain HTML. KaTeX is compatible with all major browsers, including Chrome, Safari, Firefox, Opera, Edge, and IE 11. -
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Lite YouTube Embed
A faster youtube embed
Lite YouTube Embed is a lightweight custom element that replaces the standard YouTube iframe with a much faster placeholder until a user interacts with it. It is built for websites that need embedded YouTube videos without the heavy performance cost of loading the full player immediately. The component visually behaves like a normal YouTube embed, but it delays loading expensive iframe resources until playback is requested. Developers can install it from npm or use the source files directly in a project. It supports progressive enhancement, custom poster images, visible titles, YouTube player parameters, and access to the YouTube Iframe Player API. It is especially useful for performance-focused websites, landing pages, blogs, documentation sites, and media-heavy pages where faster loading improves the user experience. -
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Magda
A federated data catalog for all your big and small data
Magda is an open-source data catalog system designed to make datasets easier to find, access, and use. Built for government and enterprise use, it supports harvesting metadata from multiple sources, managing data access policies, and integrating with data APIs. Magda is highly customizable and ideal for building open data portals or internal data discovery tools. -
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Marpit
The skinny framework for creating slide deck from Markdown
Marpit /mɑːrpɪt/ is the skinny framework for creating slide deck from Markdown. It can transform Markdown and CSS theme(s) to slide deck composed of static HTML and CSS and create a web page convertible into slide PDF by printing. Marpit is designed to output minimum assets for the slide deck. You can use the bare assets as a logicless slide deck, but mainly we expect to integrate output with other tools and applications. -
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MaterializeCSS
Materialize, a CSS Framework based on Material Design
A modern responsive front-end framework based on Material Design. We did most of the heavy lifting for you to provide a default stylings that incorporate our custom components. Additionally, we refined animations and transitions to provide a smoother experience for developers. By utilizing elements and principles of Material Design, we were able to create a framework that incorporates components and animations that provide more feedback to users. Additionally, a single underlying responsive system across all platforms allow for a more unified user experience. We have provided detailed documentation as well as specific code examples to help new users get started. We are also always open to feedback and can answer any questions a user may have about Materialize. -
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Maxun
Small event-delegation library for decoupling event binding and handli
Maxun named JsAction by Google serves as a lightweight event delegation library built in JavaScript. It allows developers to separate the logic of binding events from the code that handles those events, helping to keep DOM event wiring cleaner and more maintainable. It is archived and marked as read-only, indicating that the project is no longer actively maintained or intended for production use. The README states that ongoing development has migrated into a larger framework under the Angular project. It includes modules for dispatching events, for capturing native events, for custom event details, and for action flows. Because it is purely JavaScript (and uses HTML for test harnesses), it is suited for web browsers and front-end use. Although deprecated, it can still serve as a reference for how to architect event delegation and binding abstractions. -
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MediaElement.js
A dependable HTML media framework
Boost your player with Chromecast, Google Analytics and more. MediaElement.js is a blazingly fast and amazingly powerful HTML5 audio and video library that creates a unified feel for media files (MP4, MP3, FLV), streaming content (HLS, M(PEG)-DASH, RTMP), and embeddable players like YouTube, Vimeo, Twitch, DailyMotion, Facebook, and SoundCloud. MediaElement.js is a set of custom Flash plugins that mimic the HTML5 MediaElement API for browsers that don't support HTML5 or don't support the media codecs you're using. Instead of using Flash as a fallback, Flash is used to make the browser seem HTML5 compliant and enable codecs like H.264 (via Flash) on all browsers. In general, MediaElement.js supports IE11+, MS Edge, Chrome, Firefox, Safari, iOS 8+ and Android 4.0+. It is strongly recommended to read the entire documentation and check the demo folder to get the most out of this package. -
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Multi-Account Containers
Keep parts of your online life separated into color-coded tabs
Firefox Multi-Account Containers lets you keep parts of your online life separated into color-coded tabs. Cookies are separated by container, allowing you to use the web with multiple accounts and integrate Mozilla VPN for an extra layer of privacy. Under the hood, it separates website storage into tab-specific Containers. Cookies downloaded by one Container are not available to other Containers. You can even integrate individual Containers with Mozilla VPN to protect your browsing and location. With the Firefox Multi-Account Containers extension, you can sign in to two different accounts on the same site (for example, you could sign in to work email and home email in two different Container tabs. Keep different kinds of browsing far away from each other (for example, you might use one Container tab for managing your Checking Account and a different Container tab for searching for new songs by your favorite band) -
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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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PapersGPT
A powerful Zotero AI and MCP plugin with ChatGPT, Gemini 3.1, Claude
PapersGPT is an AI-powered plugin that integrates directly into Zotero to transform how researchers interact with academic papers and literature collections. It enables users to chat with individual PDFs or entire collections, allowing them to extract insights, generate summaries, and explore connections between documents without leaving the Zotero environment. The plugin supports a wide range of state-of-the-art language models, including GPT, Claude, Gemini, and open-source alternatives, giving users flexibility in choosing performance, cost, and privacy trade-offs. One of its most powerful features is its ability to process large volumes of academic content quickly, enabling tasks such as literature reviews, theoretical analysis, and research synthesis to be completed significantly faster. It also supports multi-document querying, allowing users to compare findings across multiple papers and generate comprehensive overviews of research topics. -
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Puter
🌐 The Internet Computer! Free, Open-Source, and Self-Hostable
Puter is an open-source, self-hostable internet computer platform that combines cloud storage, applications, development tools, and computing resources into a single web-based environment. Designed as a complete digital workspace, it enables users to access files, apps, and services from anywhere through a browser-based desktop experience. Puter includes built-in productivity applications while also providing developers with cloud infrastructure such as AI services, databases, storage, and serverless computing capabilities. The platform allows developers to build, publish, and monetize web applications through its integrated App Store ecosystem. Its self-hosting capabilities give organizations and individuals full control over their data, applications, and deployment environments. With a highly extensible architecture and broad community support, Puter serves as a modern alternative to traditional cloud desktops and personal cloud platforms. -
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Qooxdoo JavaScript Framework
qooxdoo - Universal JavaScript Framework
qooxdoo is a universal JavaScript framework that enables you to create applications for a wide range of platforms. With its object-oriented programming model, you build rich, interactive applications (RIAs), native-like apps for mobile devices, light-weight traditional web applications or even applications to run outside the browser. You leverage its integrated tool chain to develop and deploy applications of any scale while taking advantage of modern web technologies like HTML5 and CSS3, its comprehensive feature set, and a state-of-the-art GUI toolkit. qooxdoo is open source under liberal licenses, led by a dedicated developer team, with a vibrant community. Qooxdoo offers a wide range of widgets and UI components, plus powerful server I/O communication. Built-in unit testing framework with unit tests across the API and User Interface testing. -
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RapiDoc
RapiDoc - Custom-Element for OpenAPI Spec
Free of any frameworks, setups, configs, build steps or packaging. Can be used with any framework or just with vanilla javascript. Use It just like any other HTML Tag, Change its attribute using JavaScript and see it react to those changes. Basic knowledge of HTML is all that's required. Style it to your heart's content. Change font, logo, colors and theme. Inject external HTML or embed into another HTML document. Minimal dependencies, no runtime, and no virtual DOM ensure the lowest memory consumption, Just native and raw speed of the modern browsers. Loved by tech writers, designers, dev-ops, testers and developers alike, due to its simplicity, interoperability, and powerful features. No special build steps, runtime, or framework required. Comes with built-in the console to Try out the APIs. Supports authentication mechanism. No validation ensures you can test negative cases. -
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React Rainbow
React Rainbow Components. Build your web application in a snap
React Rainbow is a collection of components that will reliably help you build your application in a snap. Give it a hack and let us know what you think. We designed each component with i18n in mind. Any new component or feature we may add in the future has to be able to work fully in different locales. Proper documentation based on interactive examples to help you understand the features of each component. We know how important it for you is to test your UI. Our npm package provides a webdriver.io page object for almost every component. Our components are test infected. We like to test our components as much as possible. -
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Redash
Connect to any data source, easily visualize and share your data
Redash is an essential tool to help you make sense of your data. It allows everyone, regardless of level of technical know-how to harness the power of data. SQL users connect, query, visualize and share data easily and efficiently, allowing everyone in their organization to use the data. Redash combines the power and comfort of an SQL client with the collaborative benefits of a cloud-based service. It lets you create big, beautiful and easy to digest visualizations on dashboards for better decision-making. Redash supports a multitude of SQL and NoSQL data sources, and can be extended to support even more. Best of all it’s open source, so you can customize and add features to suit your organization’s needs perfectly. -
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Retire.js
Scanner detecting the use of JavaScript libraries
There is a plethora of JavaScript libraries for use on the web and in node.js apps out there. This greatly simplifies, but we need to stay updated on security fixes. "Using Components with Known Vulnerabilities" is now a part of the OWASP Top 10 and insecure libraries can pose a huge risk for your web app. The goal of Retire.js is to help you detect the use of versions with known vulnerabilities. Scan a web app or node app for use of vulnerable JavaScript libraries and/or node modules. grunt-retire scans your grunt-enabled app for use of vulnerable JavaScript libraries and/or node modules. Scans visited sites for references to insecure libraries and puts warnings in the developer console. An icon on the address bar displays will also indicate if vulnerable libraries were loaded. Retire.js has been adapted as a plugin for the penetration testing tools Burp and OWASP ZAP. -
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System Prompts Leaks
Collection of extracted System Prompts from popular chatbots
System Prompts Leaks is a curated repository that collects known leaked or publicly exposed system prompts used by large language models, organized so researchers, developers, and AI safety advocates can analyze them in one place. The project highlights how system prompts — instructions that strongly influence model behavior — have been inadvertently shared in forums, datasets, and open repositories, illustrating common patterns and potential vulnerabilities in prompt design and deployment. By aggregating these prompts, the repository serves as a valuable resource for understanding how widely different models are being guided in the wild, which helps with comparative analysis across architectures and service providers. It also helps raise awareness around prompt security, showing how exposed system instructions can lead to unintended behaviors or exploitation if not properly protected. -
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The Homebrewery
Create authentic looking D&D homebrews using only markdown
The Homebrewery is a tool for making authentic-looking D&D content using Markdown. It is distributed under the terms of the MIT License.
