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.

  • Gen AI apps are built with MongoDB Atlas Icon
    Gen AI apps are built with MongoDB Atlas

    Build gen AI apps with an all-in-one modern database: MongoDB Atlas

    MongoDB Atlas provides built-in vector search and a flexible document model so developers can build, scale, and run gen AI apps without stitching together multiple databases. From LLM integration to semantic search, Atlas simplifies your AI architecture—and it’s free to get started.
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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.
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  • 1
    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.
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    Downloads: 2 This Week
    Last Update:
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  • 2
    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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  • 3
    Hydra Web Presentation Server is designed to detect the web browser and serve the page to the standards that browser expects. Hydra uses XML to describe the pages and allows for server side support of XHTML 2.0, XForms and XInclude.
    Downloads: 0 This Week
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  • 4
    Live-bookmarks Manager is a Perl CGI script that helps you manage your live-bookmarks / RSS feeds through an easy to use web-interface. Currently it can add and delete bookmarks to/from an RSS feed.
    Downloads: 0 This Week
    Last Update:
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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.
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  • 5
    PHP-O-Lait is a library that, in 2 boiler-plate lines of code, allows you to call server-side PHP code from client-side JavaScript. It's so easy, in fact, that you don't need to know how it does it (hint, it uses Ajax and JSON).
    Downloads: 0 This Week
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  • 6
    PHPmkisofs is a PHP class/API for interfacing web applications with the cdrtools mkisofs application.
    Downloads: 0 This Week
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  • 7
    Pheeder is a PHP5 RSS feed generator. It implements the complete RSS 2.0 specification and is extremely easy to use. It also features extensive documentation.
    Downloads: 0 This Week
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  • 8
    Porcupine is an open-source Python based web application server that provides front-end and back-end revolutionary technologies for building modern data-centric Web 2.0 applications.
    Downloads: 0 This Week
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  • 9
    The project will enable developers to use RAM Group Shipment tracking APIs using PHP.
    Downloads: 0 This Week
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  • Connect every part of your business to one bank account Icon
    Connect every part of your business to one bank account

    North One is a business banking app that integrates cash flow, payments, and budgeting to turn your North One Account into one Connected Bank Account

    North One is proudly built for small businesses, startups and freelancers across America. Make payments easily, keep tabs on your money and put your finances on autopilot through smart integrations with the tools you’re already using. North One was built to make managing money easy so you can focus on running your business. No more branches. No more lines. No more paperwork. Get complete access to your North One Account from your phone or computer, wherever your business takes you. Create Envelopes for taxes, payroll, rent, and anything else automatically.
    Get started for free.
  • 10
    C++ library for interpreting HTTP requests as REST service calls. Classes for method, resource, endpoint make it easy to expose business objects as a REST interface. Provides etags and time versioning constraints for HTTP caching control.
    Downloads: 0 This Week
    Last Update:
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  • 11
    A library for Atom / RSS feed fetching and parsing. Maps all feeds (where possible) to the latest Atom format, so that your code doesn't have to care what format the source was in. Supports Atom 1.0, 0.3, RSS 2.0, 1.0, 0.9x
    Downloads: 0 This Week
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  • 12
    This project intend to help in fast connection to the Sphinx search engine.
    Downloads: 0 This Week
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  • 13
    XFeed is a CGI/Perl program designed to develop RSS Feeds-supported XML documents. XML-DOM oriented simple suggestion to create your own RSS Feeds.
    Downloads: 0 This Week
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  • 14
    gRSShopper is an application that allows you to define your own community of RSS feeds, aggregates content from those feeds and organizes it, and helps you integrate that content into your own posts, articles and other content.
    Downloads: 0 This Week
    Last Update:
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  • 15
    libdodo is not a web framework but a toolkit for building fast and scalable web applications easy. Its purposes is to develop as complex systems under high load that require good stability as small and fast applications for embedded world.
    Downloads: 0 This Week
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  • 16
    phleackr is a PHP binding for the Flickr API, using the XML-RPC format and thought to be compatible with PHP4 and PHP5, while avoiding the need for PEAR packages. in the future it will also support the REST format.
    Downloads: 0 This Week
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  • 17
    phpBeans provides software and specifications for enabling n-tier development within PHP, such as the phpBeans Object Server, and interoperable with other languages as well. phpBeans can be downloaded from http://www.sitelliteforge.com/
    Downloads: 0 This Week
    Last Update:
    See Project
  • 18

    solargrapher

    ComLynx protocol for solar inverters

    solargrapher is a minimalistic implementation of the ComLynx protocol, spoken by solar inverters made by Danfoss, IBC Solar et al. It logs whatever data you deem interesting in rrd file and has a minimal example on how to produce graphs for a cgi-enables webserver from that.
    Downloads: 0 This Week
    Last Update:
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