Browse free open source JavaScript Protocols and projects below. Use the toggles on the left to filter open source JavaScript Protocols by OS, license, language, programming language, and project status.

  • MongoDB Atlas runs apps anywhere Icon
    MongoDB Atlas runs apps anywhere

    Deploy in 115+ regions with the modern database for every enterprise.

    MongoDB 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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  • Keep company data safe with Chrome Enterprise Icon
    Keep company data safe with Chrome Enterprise

    Protect your business with AI policies and data loss prevention in the browser

    Make AI work your way with Chrome Enterprise. Block unapproved sites and set custom data controls that align with your company's policies.
    Download Chrome
  • 1
    PDF.js

    PDF.js

    A PDF Reader in JavaScript

    PDF.js is a web standards-based platform for parsing and rendering Portable Document Formats (PDFs). Open source and built with HTML5, this PDF viewer is supported by a great community and Mozilla Labs. PDF.js can be used on both modern and older browsers, and is built into version 19+ of Firefox.
    Downloads: 107 This Week
    Last Update:
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  • 2
    phpipam

    phpipam

    phpipam open-source IP address management

    phpipam is an open-source web IP address management application (IPAM). Its goal is to provide light, modern and useful IP address management. It is php-based application with MySQL database backend, using jQuery libraries, ajax and some HTML5/CSS3 features.
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    Downloads: 139 This Week
    Last Update:
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  • 3
    CloudServer

    CloudServer

    Zenko CloudServer open-source Node.js implementation of S3 protocol

    Zenko CloudServer, an open-source Node.js implementation of the Amazon S3 protocol on the front-end and backend storage capabilities to multiple clouds, including Azure and Google.
    Downloads: 7 This Week
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  • 4
    Lighthouse

    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.
    Downloads: 6 This Week
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  • G-P - Global EOR Solution Icon
    G-P - Global EOR Solution

    Companies searching for an Employer of Record solution to mitigate risk and manage compliance, taxes, benefits, and payroll anywhere in the world

    With G-P's industry-leading Employer of Record (EOR) and Contractor solutions, you can hire, onboard and manage teams in 180+ countries — quickly and compliantly — without setting up entities.
    Learn More
  • 5
    Soap

    Soap

    A SOAP client and server for node.js

    A SOAP client and server for node.js. This module lets you connect to web services using SOAP. It also provides a server that allows you to run your own SOAP services. Very simple API Handles both RPC and Document schema types. Supports multiRef SOAP messages. Support for both synchronous and asynchronous method handlers. WS-Security UsernameToken Profile 1.0. Supports Express-based web server (body parser middleware can be used) The so called one-way (or asynchronous) calls occur when an operation is called with no output defined in WSDL. The server sends a response (defaults to status code 200 with no body) to the client disregarding the result of the operation.
    Downloads: 4 This Week
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  • 6
    jsdom

    jsdom

    JavaScript implementation of various web standards, for use with Node

    jsdom is a pure-JavaScript implementation of many web standards, notably the WHATWG DOM and HTML Standards, for use with Node.js. In general, the goal of the project is to emulate enough of a subset of a web browser to be useful for testing and scraping real-world web applications. The latest versions of jsdom require Node.js v10 or newer. To use jsdom, you will primarily use the JSDOM constructor, which is a named export of the jsdom main module. Pass the constructor a string. The resulting object is an instance of the JSDOM class, which contains a number of useful properties and methods besides window. In general, it can be used to act on the jsdom from the "outside," doing things that are not possible with the normal DOM APIs. For simple cases, where you don't need any of this functionality, we recommend a coding pattern.
    Downloads: 4 This Week
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  • 7
    Apache Guacamole

    Apache Guacamole

    HTML5 Clientless Remote Desktop

    Apache Guacamole is a clientless remote desktop gateway. It supports standard protocols like VNC, RDP, and SSH. We call it clientless because no plugins or client software are required. Thanks to HTML5, once Guacamole is installed on a server, all you need to access your desktops is a web browser.
    Downloads: 16 This Week
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  • 8
    ZK - Simply Ajax and Mobile
    ZK is an open-source Java framework for building modern web and mobile applications. It enables developers to create rich, interactive UIs using only Java — no JavaScript required. With 200+ Ajax-powered components, event-driven architecture, and support for popular technologies like Spring, Java EE, and JSP/JSF, ZK makes it simple to deliver powerful and user-friendly web applications.
    Downloads: 14 This Week
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  • 9
    CF-Workers-SUB

    CF-Workers-SUB

    Aggregates any of your nodes with multiple subscriptions

    CF-Workers-SUB is a project that uses Cloudflare Workers to aggregate or convert multiple subscription sources (for proxy nodes/configs) into a personalized subscription link for the user. Essentially, it lets you input your own node(s) and then generate a unified subscription endpoint that others can use with tools like Clash, Sing-box, or V2Ray. The repository emphasizes being user-friendly for scenarios where one has many proxy/node links but wants to streamline into a single subscription feed. It also supports variable configuration (token, built-in nodes, custom add/CSV/API sources) to produce automated “preferred line” generation. The project is aimed at “subscription” style services (i.e., providing proxies as subscriptions) rather than pure application logic, and is tailored toward self-hosters. It’s designed for ease of deployment on Workers or Pages, enabling people to maintain their own subscription link infrastructure cheaply.
    Downloads: 3 This Week
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  • Field Service Management Software | BlueFolder Icon
    Field Service Management Software | BlueFolder

    Maximize technician productivity with intuitive field service software

    Track all your service data in one easy-to-use system, enabling your team to move faster and generate more revenue for your bottom line.
    Learn More
  • 10
    Tabulator

    Tabulator

    Interactive tables and data grids for JavaScript

    Tabulator allows you to create interactive tables in seconds from any HTML Table, Javascript Array or JSON formatted data. Simply include the library and the css in your project and you're away! Tabulator has an enormous number of features to help customize your table experience to your needs. With new features released every month, there is bound to be something to get your interactive table juices flowing. Tabulator is built to work with all the major front-end JavaScript frameworks including React, Angular and Vue. Header filters and programmatic filters can be set independently allowing you to use a header filter to further restrict the rows shown in an already filtered data set. If an input element is used as the filter element, the table will be filtered in real-time as the user types in the input element. To prevent excessive redrawing of the table Tabulator will wait 300 milliseconds after the user has finished typing before triggering the filter.
    Downloads: 3 This Week
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  • 11
    Web Archives

    Web Archives

    Browser extension for viewing archived and cached versions of websites

    Browser extension for viewing archived and cached versions of web pages, available for Chrome, Edge and Safari. Web Archives is a browser extension that enables you to find archived and cached versions of web pages, and comes with support for more than 10 search engines. Searches can be initiated from the context menu and the browser toolbar. A diverse set of archive and cache sources are supported, which can be toggled and reordered from the extension's options. Visit the wiki for the full list of supported search engines. You may choose to allow the extension to run on every website, or grant access to the current website before a search. When you grant access only to the current website, access must also be granted to each search engine in order to view search results. A handful of search modes are offered that serve different use cases. The search mode can be set independently for the context menu and the browser toolbar from the extension's options.
    Downloads: 3 This Week
    Last Update:
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  • 12
    WorkerVless2sub

    WorkerVless2sub

    Automate batch replacement to generate subscription generators

    WorkerVless2sub is a dedicated subscription generator focused on providing “preferred line” subscriptions by processing VMess, VLESS, Trojan nodes, filtering and replacing automatically via a Cloudflare Worker script. The idea is you supply node lists (or use existing APIs/CSV sources) and the worker filters them by criteria like speed or reliability and then emits a subscription link for end-users. It supports deployment on Cloudflare Pages or Workers, offers configuration via variables like HOST, UUID, PATH, ADD, ADDAPI etc., and has an Apache-2.0 license. The tool supports both IPv4 and IPv6 node sources, speed test CSV inputs, and logic to drop nodes that don’t meet the threshold (DLS variable). It has a sizeable star count and forks indicating broader adoption in self-hosted proxy subscription communities. The README also explicitly warns about hosting personal private nodes in the script if intending public use.
    Downloads: 3 This Week
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  • 13
    CF-Workers-docker.io

    CF-Workers-docker.io

    Docker Warehouse Image Proxy Tool

    CF-Workers-docker.io is a project by cmliu that sets up a proxy for Docker Hub (and potentially other container image registries) using Cloudflare Workers, effectively acting as a middle-man mirror to improve image pull reliability and speed in regions where direct access is degraded. The idea is to intercept registry requests, reroute or mirror them through a worker endpoint, and therefore bypass regional limitations or firewall blocks affecting official Docker registries. Users can deploy their own copy of this proxy, point their Docker daemon’s registry-mirrors configuration to it, and benefit from an accelerated and more accessible image pull experience. The project’s README warns about possible policy risks—since Cloudflare’s terms forbid use of Workers for VPN or similar proxy services, so users deploy at their own risk. It also includes instructions for setting up both Docker daemon and containerd/podman equivalents by customizing configuration files.
    Downloads: 2 This Week
    Last Update:
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  • 14
    IIPImage

    IIPImage

    IIPImage is an advanced high-performance image server and client

    IIPImage is a high performance image server and client for viewing, navigating and zooming within high resolution images on the internet. Images in TIFF or JPEG2000 format are efficiently streamed by the server to a choice of clients that can be embedded within a web page.
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    Downloads: 8 This Week
    Last Update:
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  • 15
    CalemEAM is an open source enterprise asset management (EAM/CMMS) suite, featuring Web 2.0 Ajax client with drag-and-drop customization and a PHP based server. This free CMMS/EAM project can be used for industrial, facility and IT asset management.
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    Downloads: 21 This Week
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  • 16
    OpenVPN ALS is a web-based SSL VPN server written in Java. It has a browser-based AJAX UI which allows easy access to intranet services. OpenVPN ALS is a direct descendant of Adito, which was a fork of SSL-Explorer.
    Downloads: 6 This Week
    Last Update:
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  • 17
    Polka

    Polka

    A micro web server so fast, it'll make you dance

    Polka is a micro web server for Node.js that positions itself as an extremely minimal yet highly performant alternative to Express. Under the hood it is essentially a thin layer on top of Node’s native HTTP server, adding just enough routing, middleware, and sub-application support to be productive without the weight of a full framework. Its API is intentionally similar to Express, which makes it easy for existing Express users to migrate or share middleware with minimal changes. Because it focuses on speed and small size, polka can be attractive for performance-sensitive services, serverless functions, or applications where dependency budgets are tight. The project exposes common features like route parameters, query parsing (usually via external middleware), and simple error handling, but leaves more advanced concerns to the user or ecosystem packages.
    Downloads: 1 This Week
    Last Update:
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  • 18
    koa-cache-responses

    koa-cache-responses

    Caching middleware for Koa using koa-cash

    Caching middleware for Koa using koa-cash and route pattern-based matching with path-to-regexp. Made for Lad.
    Downloads: 1 This Week
    Last Update:
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  • 19

    NZBGet

    Efficient Usenet Downloader

    NZBGet is a usenet downloader, written in C++ and designed with performance in mind to achieve maximum download speed by using very little system resources. It supports all platforms including Windows, Mac, Linux and works on all devices including PC, NAS, WLAN routers and media players.
    Downloads: 4 This Week
    Last Update:
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  • 20
    JAMP (acronym Javascript Ajax Mysql Php) is powerful and fast framework, distributed with GNU licence, in it is enclosed a suit environment for the development WEB applications.
    Downloads: 11 This Week
    Last Update:
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  • 21
    DymoChromePrinting

    DymoChromePrinting

    Printing to Dymo LabelWriter without NPAPI

    System to allow printing to Dymo Labelwriter labelprinters without NPAPI plugin framework which has recently been disabled in chrome. System runs a local node.js server which accepts XML which is passed into the label framework. Includes a chrome extension to allow CORS/Mixed content posts to localhost to print labels, typically blocked by browser. See README.txt for information on usage. ----------------------- Note: Compiled Binaries are windows only, but this method is macintosh compatible. You'll just need to compile printlabel.exe for mac & write shell scripts to launch the server to replace runserver.exe & obtain a mac copy of node.exe. Please use the discussion page if you have any questions
    Downloads: 3 This Week
    Last Update:
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  • 22
    SITools2
    SITools2 is a new CNES generic tool performed by a joint effort between CNES and scientific laboratories. The aim of SITools is to provide a self-manageable data access layer deployed on already existing scientific laboratory databases.
    Downloads: 1 This Week
    Last Update:
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  • 23
    As the name implies (Javascript RRD), javascriptRRD is a javascript library for reading Round Robin Database (RRD) archives (produced by rrdtool) using AJAX-like techniques. The library also provides graphing classes leveraging the Flot library.
    Downloads: 1 This Week
    Last Update:
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  • 24

    Service Grid - Language Grid Base System

    SOA infrastracture initially developed by NICT Language Grid Project

    Service Grid is an infrastructure for accumulating and sharing Web services. Resources with complicated intellectual property issues are wrapped as Web services and shared on the Service Grid. If you release your software by using the software of this project, please include the following description in the documents or on the website. * This software uses the [SOFTWARE] by the Language Grid project (http://langrid.org/). [SOFTWARE] is one of: * Service Grid Server Software (http://langrid.org/oss-project/en/service_grid.html) * Language Service Development Libraries (http://langrid.org/oss-project/en/language_service.html) * Language Grid Toolbox (http://langrid.org/oss-project/en/toolbox.html) If you publish a paper by using the software of this project, please cite the following book. * Toru Ishida Ed. The Language Grid: Service-Oriented Collective Intelligence for Laguage Resource Interoperability. Springer, 2011. ISBN 978-3-642-21177-5.
    Downloads: 2 This Week
    Last Update:
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  • 25

    ajile

    Advanced JavaScript Importing & Loading Extension

    ajile: Advanced JavaScript Importing & Loading Extension allows developers to easily create unique namespaces for JavaScript modules and quickly define dependencies that allow scripts to automatically load and import each other as needed.
    Downloads: 2 This Week
    Last Update:
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