Browse free open source Protocols and projects for Linux below. Use the toggles on the left to filter open source 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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  • Level Up Your Cyber Defense with External Threat Management Icon
    Level Up Your Cyber Defense with External Threat Management

    See every risk before it hits. From exposed data to dark web chatter. All in one unified view.

    Move beyond alerts. Gain full visibility, context, and control over your external attack surface to stay ahead of every threat.
    Try for Free
  • 1
    Mongoose Embedded Web Server

    Mongoose Embedded Web Server

    An embedded web server

    Mongoose is a networking library for C/C++. It implements event-driven non-blocking APIs for TCP, UDP, HTTP, WebSocket, MQTT. It is designed for connecting devices and bringing them online. On the market since 2004, used by vast number of open source and commercial products - it even runs on the International Space Station! Mongoose makes embedded network programming fast, robust, and easy. Cross-platform, works on Linux/UNIX, MacOS, Windows, Android, FreeRTOS, etc. Supported embedded architectures: ESP32, NRF52, STM32, NXP, and more. Built-in protocols: plain TCP/UDP, HTTP, MQTT, Websocket. SSL/TLS support: mbedTLS, OpenSSL or custom (via API). Used to solve a wide range of business needs, like implementing Web UI interface on devices, RESTful API services, telemetry data exchange, remote control for a product, remote software updates, remote monitoring, and others.
    Downloads: 9 This Week
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  • 2
    Sentinel

    Sentinel

    Lightweight, powerful flow control component

    Sentinel is a powerful flow control component that ensures the reliability and monitoring of microservices by taking “flow” as the breakthrough point. It covers multiple fields including flow control, concurrency limiting, circuit breaking, and adaptive system protection.
    Downloads: 8 This Week
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  • 3
    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: 30 This Week
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  • 4
    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: 18 This Week
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  • The All-in-One Commerce Platform for Businesses - Shopify Icon
    The All-in-One Commerce Platform for Businesses - Shopify

    Shopify offers plans for anyone that wants to sell products online and build an ecommerce store, small to mid-sized businesses as well as enterprise

    Shopify is a leading all-in-one commerce platform that enables businesses to start, build, and grow their online and physical stores. It offers tools to create customized websites, manage inventory, process payments, and sell across multiple channels including online, in-person, wholesale, and global markets. The platform includes integrated marketing tools, analytics, and customer engagement features to help merchants reach and retain customers. Shopify supports thousands of third-party apps and offers developer-friendly APIs for custom solutions. With world-class checkout technology, Shopify powers over 150 million high-intent shoppers worldwide. Its reliable, scalable infrastructure ensures fast performance and seamless operations at any business size.
    Learn More
  • 5
    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: 17 This Week
    Last Update:
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  • 6

    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: 12 This Week
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  • 7
    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: 2 This Week
    Last Update:
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  • 8
    Bedrock

    Bedrock

    WordPress boilerplate with modern development tools

    WordPress boilerplate with modern development tools, easier configuration, and an improved folder structure. Bedrock is an open source project and completely free to use. Bedrock is a modern WordPress stack that helps you get started with the best development tools and project structure. Much of the philosophy behind Bedrock is inspired by the Twelve-Factor App methodology including the WordPress specific version. Bedrock is multisite network compatible, but needs the roots/multisite-url-fixer mu-plugin on subdomain installs to make sure admin URLs function properly. This plugin is not needed on subdirectory installs but will work well with them. Composer is used to manage dependencies. Bedrock considers any 3rd party library as a dependency including WordPress itself and any plugins.
    Downloads: 1 This Week
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  • 9
    GoatCounter

    GoatCounter

    Easy web analytics. No tracking of personal data

    GoatCounter is an open-source web analytics platform available as a hosted service (free for non-commercial use) or self-hosted app. It aims to offer easy-to-use and meaningful privacy-friendly web analytics as an alternative to Google Analytics or Matomo. Privacy-aware; doesn’t track users with unique identifiers and doesn't need a GDPR notice. Fine-grained control over which data is collected. Also see the privacy policy and GDPR consent notices. Lightweight and fast; adds just ~3.5KB of extra data to your site. Also has JavaScript-free "tracking pixel" option, or you can use it from your application's middleware or import from logfiles. Keeps useful statistics such as browser information, location, and screen size. Keep track of referring sites and campaigns. Easy; if you've been confused by the myriad of options and flexibility of Google Analytics and Matomo that you don't need then GoatCounter will be a breath of fresh air.
    Downloads: 1 This Week
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  • Simple, Secure Domain Registration Icon
    Simple, Secure Domain Registration

    Get your domain at wholesale price. Cloudflare offers simple, secure registration with no markups, plus free DNS, CDN, and SSL integration.

    Register or renew your domain and pay only what we pay. No markups, hidden fees, or surprise add-ons. Choose from over 400 TLDs (.com, .ai, .dev). Every domain is integrated with Cloudflare's industry-leading DNS, CDN, and free SSL to make your site faster and more secure. Simple, secure, at-cost domain registration.
    Sign up for free
  • 10
    Plausible Analytics

    Plausible Analytics

    Simple, open-source, lightweight and privacy-friendly web analytics

    Plausible is lightweight and open-source web analytics. No cookies and fully compliant with GDPR, CCPA and PECR. Made and hosted in the EU, powered by European-owned cloud infrastructure. Frustrated with Google Analytics? So are we and that's why we built Plausible Analytics, a simple, lightweight (< 1 KB), open source, and privacy-friendly alternative that doesn't come from the adtech world. Web analytics went from a simple, fun and useful practice for site owners to a data-grabbing machine for surveillance capitalism. Google Analytics is frustrating to use, difficult to understand, slow to load and privacy-invasive too. Plausible Analytics is built for privacy-conscious site owners. You get valuable and actionable stats to help you improve your efforts while your visitors keep having a nice and enjoyable experience. Plausible is simple analytics. It is easy to understand and it cuts through the noise.
    Downloads: 1 This Week
    Last Update:
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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: 1 This Week
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  • 12
    A C/C++ based client and server implementation of the OGSA Basic Execution Service, used to provide a Web Services interface to distributed resource managers such as Platform LSF and PBS/PBS Pro. The SOAP stack is provided by the gSOAP toolkit.
    Downloads: 2 This Week
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  • 13
    Webtunnel is an HTTP tunnel with some unique features: it runs in the context of a web server; it uses simple requests/responses for proxy traversal; and it is multi-threaded to allow many parallel connections to many destinations simultaneously.
    Leader badge
    Downloads: 2 This Week
    Last Update:
    See Project
  • 14
    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
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  • 15
    Car Sales Management System Codeigniter

    Car Sales Management System Codeigniter

    Car Sales Management System, Vehicle Sales Management in Codeigniter

    Vehicle Sales Management System Built on Codeigniter 2.x Framework Features : Front End with Vehicles Added from Back-end with details Back-end login system for admins, employees Different Controlling for Admin and Employee New Employee Adding for doing Sales , Adding new vehicles Admin Features : # Add, Edit , Delete almost anything(Including new users), Sell vehicles, See customer Details Employee Features : # Add vehicles only and Sell them to new clients with their details ------------------------------------------------------------------------- Others : Used CodeIgniter Active record for DB query, Basic Parser use of codeigniter, uses cool template for backend with a lot of effects, form validation with codeigniter Database is included in the folder. Uses Datatables with sorting , filtering , and date to date range for getting result Change DB & URL as the video Shows localhost. Contact : dranger2011@gmail.com for any help. For Pro version Contact me.
    Downloads: 2 This Week
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  • 16
    Downloads: 2 This Week
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  • 17
    This application permit user reading RSS (web feed) on his mobile device.
    Downloads: 2 This Week
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  • 18
    MOVED: http://code.google.com/p/rssfilter/ Selects and/or rejects articles from RSS feeds based on keywords you supply. Runs in your taskbar! Originally intended to filter new content from scientific journals such as PRL or the arxiv (cond-mat, etc)
    Downloads: 2 This Week
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  • 19

    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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  • 20
    mendelson AS4

    mendelson AS4

    AS4 Solution for ENTSOG, e-SENS, ebMS, PEPPOL, ICS2, BDEW

    mendelson AS4 is a free JAVA-based open source AS4 solution. Contains a monitoring- and configuration GUI (SWING), supports PUSH and PULL messages, ENTSOG AS4, e-SENS AS4, ebMS AS4, BDEW AS4, PEPPOL AS4, ICS2 AS4, signatures (SOAP, payload), selectable profile per trading partner, encryption (SOAP, payload), UserNameToken, TLS, pluggable into any servlet container, trading partner management, compression, certificate management
    Downloads: 2 This Week
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  • 21
    Digital Learning Sciences (DLS) is a mission-centered, not-for-profit organization dedicated to improving learning through the use of digital content and tools.
    Downloads: 1 This Week
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  • 22
    Scribe
    Scribe is a CMS for the Liferay Portal framework. It includes Web Content Management as well as Learning Management System features.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 23
    ARADO - URL Database & RSS Feed Reader
    ARADO RSS Feed Reader is a URL Database for Websearch and RSS Feed Reading, which saves your added Bookmarks & RSS-Feeds and syncs newest URLs with your connected devices. Store and Search your all your URLs in ARADO. As framework c++ / Qt is used.
    Downloads: 1 This Week
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  • 24
    Be4gle is a web services layer for MySQL that exposes the database as a SOAP server. HTML forms and a generic JavaScript soap client are generated from XML templates enabling client side data binding and event-driven web applications (AJAX).
    Downloads: 1 This Week
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  • 25
    The gateway is an open source JavaEE application developed by the Vermont Dept of Taxes. It provides a web services framework for accepting Streamlined Sales Tax registrations and returns. It also includes a web interface for submitting transmissions.
    Downloads: 1 This Week
    Last Update:
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