Open Source JavaScript Software - Page 34
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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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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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Application Monitoring That Won't Slow Your App DownFull APM with errors, performance, logs, and uptime monitoring. 99.999% uptime SLA on the platform itself.
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HTM
JSX alternative using standard tagged templates, with compiler support
htm is JSX-like syntax in plain JavaScript, no transpiler necessary. Develop with React/Preact directly in the browser, then compile htm away for production. It uses standard JavaScript Tagged Templates and works in all modern browsers. The syntax you write when using HTM is as close as possible to JSX. htm actually takes the JSX-style syntax a couple steps further! No transpiler necessary. HTML's optional quotes: <div class=foo>. Component end-tags: <${Footer}>footer content<//>. Syntax highlighting and language support via the lit-html VSCode extension and vim-jsx-pretty plugin. Multiple root element (fragments): <div /><div />. Support for HTML-style comments: <div><!-- comment --></div>. htm is published to npm, and accessible via the unpkg.com CDN. If you're using Preact or React, we've included off-the-shelf bindings to make your life easier. They also have the added benefit of sharing a template cache across all modules. -
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Haraka
A fast, highly extensible, and event driven SMTP server
Haraka is a highly scalable node.js email server with a modular plugin architecture. Haraka can serve thousands of concurrent connections and deliver thousands of messages per second. Haraka and plugins are written in asynchronous JS and are very fast. Haraka has very good spam protection (see plugins) and works well as a filtering MTA. It also works well as a MSA running on port 587 with auth and dkim_sign plugins enabled. Haraka makes no attempt to be a mail store (like Exchange or Postfix/Exim/Qmail), a LDA, nor an IMAP server (like Dovecot or Courier). Haraka is typically used with such systems. Haraka has a scalable outbound mail delivery engine built in. Mail marked as relaying (such as via an auth plugin) is automatically queued for outbound delivery. Haraka's plugin architecture provides an easily extensible MTA that complements traditional MTAs that excel at managing mail stores but do not have sufficient filtering. -
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HeyUI.ext
UI Toolkit for Web, Vue3.0
HeyUI.ext is a comprehensive UI component library built for Vue.js that provides a wide range of reusable components and tools for developing modern web applications with efficiency and consistency. Designed as a full UI toolkit rather than a minimal component set, it includes elements for forms, tables, modals, navigation, and data handling, making it suitable for building complex interfaces such as dashboards and admin panels. The library emphasizes simplicity and speed, allowing developers to quickly assemble functional interfaces while maintaining scalability as projects grow. It supports modern development workflows through npm installation as well as CDN usage, enabling both lightweight experimentation and full-scale application integration. HeyUI also includes features such as validation, internationalization, and advanced components like trees, selectors, and date pickers, which help streamline common frontend tasks. -
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Hiring Without Whiteboards
Companies that don't have a broken hiring process
Hiring-without-whiteboards is a curated list of companies and teams that avoid traditional "whiteboard" interviews, instead focusing on realistic and practical evaluation methods. In this context, "whiteboards" symbolizes outdated or unhelpful computer science trivia questions often criticized in technical interviews. The project highlights organizations that emphasize interviewing techniques more aligned with actual day-to-day work, such as collaborative problem-solving, pair programming, or take-home assignments. It encourages a shift away from brainteasers, riddles, or puzzle-based interviews, which can create unnecessary barriers for candidates. The repository not only provides a resource for job seekers looking for fairer interview processes but also offers guidance for companies seeking to improve their hiring practices. With community contributions, it continues to grow as a reference for employers and applicants who value practical, respectful, & effective technical evaluation. -
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Home Assistant Config (hass-config)
A different take on designing a Lovelace UI (Dashboard)
hass-config is a user’s home automation configuration repository (for Home Assistant) that captures their YAML files, scripts, automations, dashboards, and integrations in a version-controlled layout. By organizing all Home Assistant components—sensors, automations, scripts, themes, and Lovelace UI definitions—into a structured hierarchy, the repo helps maintain consistency, shareability, and backup of the smart home setup. Because Home Assistant involves complex interdependencies between devices and automations, having a central config repo ensures changes are traceable and easily reverted. The repository often includes templates, secrets configuration, and skip-files to avoid committing sensitive credentials. For users running multiple installations or migrating devices, hass-config serves as the canonical definition of the automation state. It’s especially helpful for community users who share automations, troubleshoot setups, or onboard new devices. -
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HumanLayer
Open source IDE for orchestrating AI coding agents in large codebases
HumanLayer is an open source development environment designed to help developers orchestrate and manage AI coding agents working within complex software projects. It provides a framework and tooling that allow AI agents to research, plan, and implement changes in large codebases while maintaining structured workflows. It focuses on enabling AI-assisted development through coordinated agent workflows rather than isolated code generation tasks. HumanLayer integrates with modern AI models and coding assistants to automate tasks such as code research, planning, and implementation while maintaining a structured development process. HumanLayer introduces advanced context management techniques that help AI agents understand large repositories and operate effectively across multiple tasks. It also supports collaborative workflows where developers and AI agents can work together with human oversight and control. -
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Hydejack
A boutique Jekyll theme for hackers, nerds, and academics
Hydejack's cover page on a variety of screens. Hydejack is a boutique Jekyll theme for hackers, nerds, and academics, with a focus on personal sites that are meant to impress. It includes a blog that is suitable for both prose and technical documentation, a portfolio to showcase your projects, and a resume template that looks amazing on the web and in print. Ever since the introduction of Dark Mode, link styles have been a bit of an issue. Specifically, finding an accent color that worked on both light and dark backgrounds was the problem. With Hydejack 9, the link style has been revamped so that legibility is no longer tied to the choice of accent color, giving you much more freedom in creating a unique design flavor for your site. -
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IPFS Web UI
A frontend for an IPFS node
A web interface to IPFS, shipped with Kubo, and ipfs-desktop. Check on your node stats, explore the IPLD powered merkle forest, see peers around the world and manage your files, without needing to touch the CLI. When working on the code, run an ipfs daemon, the local dev server, the unit tests, and the storybook component viewer and see the results of your changes as you save files. If you need to run IPFS in a Docker container, you can still have Web UI available by exposing both the Gateway and Web UI ports. The end-to-end tests (E2E) test the full app in a headless Chromium browser. They spawn real IPFS node for HTTP API and a static HTTP server to serve the app. The purpose of those tests is not being comprehensible, but act as a quick regression and integration suite. -
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IdeaSpaceVR
Create interactive 3D and VR web experiences
IdeaSpaceVR is a free, open-source, self-hosted CMS platform. Manage your virtual reality spaces and assets like you would manage blog posts. Run it on your own server. All you need is PHP and a database (MySQL, PostgreSQL or MariaDB). VR experience is a website using a theme. There are a couple of pre-installed themes: IdeaSpace Compass Blog, Image Slideshow, IdeaSpace 360, IdeaSpace 3D Model. Check out the examples! Need a different theme? Look at our theme directory or create your own by using the Theme API. Embed spaces on your website or share on social media. Add a 3D or virtual reality space to your existing website. IdeaSpaceVR is using WebXR for interactive 3D and VR experiences that is compatible with all modern web browsers on desktop, mobile and VR headsets. Experience your 3D/VR space with any virtual reality headset or any desktop or mobile device. No plugin or app installation is required, just use your web browser. -
AI-generated apps that pass security reviewRetool lets you generate dashboards, admin panels, and workflows directly on your data. Type something like “Build me a revenue dashboard on my Stripe data” and get a working app with security, permissions, and compliance built in from day one. Whether on our cloud or self-hosted, create the internal software your team needs without compromising enterprise standards or control.
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International Telephone Input
Plugin for entering and validating international telephone numbers
A JavaScript plugin for entering and validating international telephone numbers. It adds a flag dropdown to any input, detects the user's country, displays a relevant placeholder and provides formatting/validation methods. Lots of initialization options for customization, as well as public methods for interaction. The user types their national number and the plugin gives you the full standardized international number. Navigate the country dropdown by typing a country's name, or using up/down keys. Automatically set the input placeholder to an example number for the selected country. Automatically select the user's current country using an IP lookup. Access the country data to create a separate country dropdown for an address form, and then listen for change events to keep the two dropdowns in sync. Use Twilio's API to build phone verification, SMS 2FA, appointment reminders, marketing notifications and so much more. -
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IsoCity
A isometric city builder in JavaScript
Isocity is an interactive web-based project that allows users to create their own isometric cities using modular blocks. It's designed as a fun and creative way to build pixel art cities. -
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JavaScript localStorage
A simple, lightweight JavaScript API for handling browser localStorage
A simple, lightweight JavaScript API for handling browser local storage, it is easy to pick up and use has a reasonable footprint of 2.08kb(gzipped: 0.97kb), and has no dependencies. It should not interfere with any JavaScript libraries or frameworks. -
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KeepChatGPT
Browser userscript that enhances ChatGPT reliability and usability
KeepChatGPT is an open source browser userscript designed to enhance the reliability, usability, and efficiency of the ChatGPT web interface. It runs through userscript managers and injects additional functionality directly into the page, allowing users to improve their workflow without requiring a backend service or separate application. It focuses on solving common problems experienced during AI conversations, such as session timeouts, network errors, message failures, and interruptions during long chats. By automating session refresh and maintaining active connections, KeepChatGPT reduces the need for repeated manual steps when recovering from errors or expired sessions. KeepChatGPT also introduces a variety of enhancements that improve the overall interface and user experience, including page cleanup, expanded display layouts, conversation cloning, and detailed chat information. -
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Kendo UI Core
An HTML5, jQuery-based widget library for building modern web apps
Kendo UI is everything you need to build sites and apps with HTML5 & JavaScript. Kendo UI Core is the free and open-source version of Kendo UI that provides access to the web's best UI widgets and key framework features, essential for developing great experiences for the web and mobile. Kendo UI Core is a free and open-source subset of Kendo UI. The following table details the widgets and features available in Kendo UI Core, as well as the additional features available via a commercial Kendo UI license. -
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Kibana
Your window into the Elastic Stack
Kibana is a analytics and search dashboard for Elasticsearch that allows you to visualize Elasticsearch data and efficiently navigate the Elastic Stack. With Kibana you can visualize and shape your data simply and intuitively, share visualizations for greater collaboration, organize dashboards and visualizations, and so much more. -
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Kubernetes Goat
Kubernetes Goat is a "Vulnerable by Design" cluster environment
Learn to attack or find security issues, misconfigurations, and real-world hacks within containers, Kubernetes, and cloud-native environments. Enumerate, exploit, and gain access to the workloads right from your browser. Understand how attackers think, work, and exploit security issues, and apply these learnings to detect and defend them. Also, learn best practices, defenses, and tools to mitigate, and detect in the real world. Learn the hacks, defenses, and tools. So that you can think like an attacker, and secure your Kubernetes, cloud, and container workloads right from the design, code, and architecture itself to prevent them. Use Kubernetes Goat to showcase the effectiveness of the tools, product, and solution. Also, educate the customers and share your product or tool knowledge in an interactive hands-on way. -
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Layui UI
An open source Web UI component library
layui is a set of open-source Web UI component library, which adopts its own classic modularization specifications and follows the development method of native HTML/CSS/JS. It is very easy to use and ready to use. Its style is simple and light, while its components are elegant and rich. Every detail from source code to usage method has been carefully crafted, which is very suitable for the rapid development of web interface. Layui is different from those front-end frameworks based on the bottom layer of MVVM, but it does not go against the road, but believes in returning to the basics. To be precise, it is more for back-end developers. You don’t need to get involved in various front-end tools. You only need to face the browser itself, and let all the elements and interactions you need come from here at your fingertips. -
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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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LibreSign
Nextcloud app to sign PDF documents
Simplify your digital signatures and document management safely and efficiently. Beyond offering agility and security in digital signatures and document management, LibreSign features functionalities that adapt to the specific needs of your organization. Keep your documents secure with end-to-end encryption and multi-factor authentication, ensuring protection throughout the electronic document signing process. Hybrid signatures streamline negotiation processes, offering flexibility in choosing between personal or system-generated digital certificates for signing documents digitally with LibreSign. LibreSign revolutionizes document authenticity verification with QR Code, ensuring security, efficiency, and practicality. Its instantaneous validation, agility, transparency, and compatibility with various platforms make it perfect for sustainable businesses. -
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Live-Forensicator
A suite of Tools to aid Incidence Response and Live Forensics
Live-Forensicator is a toolkit intended for live forensic collection and initial triage on Windows machines. It automates the capture of volatile information—running processes, network connections, loaded drivers, account sessions, and in-memory artifacts—into a consistent artifact set that investigators can analyze offline. The tool tries to be non-invasive while collecting sensitive data quickly and logs the collection steps to preserve chain-of-custody details and to help auditors understand potential collection side effects. Because live collection can alter system state, Live-Forensicator includes options to limit intrusive actions and to capture hashes, timestamps, and provenance metadata to aid later validation. The output bundles are often compatible with other forensic parsers and workflows, which helps teams move from initial triage to deep-dive forensic analysis without re-running collection tasks. -
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MDX
Markdown for the component era
MDX lets you use JSX in your markdown content. You can import components, such as interactive charts or alerts, and embed them within your content. This makes writing long-form content with components a blast. -
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Machine Learning Systems
Introduction to Machine Learning Systems
Machine Learning Systems is an open educational repository that serves as the source and learning stack for the Machine Learning Systems textbook, a project focused on teaching how to engineer AI systems that work reliably in real-world environments. Rather than concentrating only on model training, the material emphasizes the broader discipline of AI engineering, covering efficiency, reliability, deployment, and evaluation across the full lifecycle of intelligent systems. The repository includes textbook content, supporting labs, and companion tools such as TinyTorch to help learners move from theory to hands-on experimentation. Its mission is to establish AI systems engineering as a foundational discipline alongside traditional software and computer engineering. The project is structured to guide users through reading, building, and deploying workflows, including running labs on edge devices like Arduino and Raspberry Pi. -
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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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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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Marked
A markdown parser and compiler. Built for speed
A low-level markdown compiler for parsing markdown without caching or blocking for long periods of time. Light-weight while implementing all markdown features from the supported flavors & specifications. Available as a command-line interface (CLI) and running in client- or server-side JavaScript projects. The only completely secure system is the one that doesn't exist in the first place. Having said that, we take the security of Marked very seriously. To prevent ReDoS attacks you can run marked on a worker and terminate it when parsing takes longer than usual. Marked can be run in a worker thread on a node server, or a web worker in a browser. Only current and LTS Node.js versions are supported. End-of-life Node.js versions may become incompatible with Marked at any point in time.
