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

  • Real Time Accounts Payable Automation. Icon
    Real Time Accounts Payable Automation.

    Invoice capture and automation seamlessly integrated with your accounting software

    Yooz provides the smartest, most powerful, and easiest-to-use cloud-based E-invoicing and Purchase-to-Pay automation solution. It delivers unmatched savings, speed, and security with affordable zero-risk subscriptions to more than 5,000 customers and 300,000 users worldwide.
  • Event Management Software Icon
    Event Management Software

    Ideal for conference and event planners, independent planners, associations, event management companies, non-profits, and more.

    YesEvents offers a comprehensive suite of services that spans the entire conference lifecycle and ensures every detail is executed with precision. Our commitment to exceptional customer service extends beyond conventional boundaries, consistently exceeding expectations and enriching both organizer and attendee experiences.
  • 1
    ODM

    ODM

    Device Manager for ONVIF-based Network video devices.

    ODM is a ONVIF protocol implementation of Network Video Client (NVC) to manage Network Video Transmitters (NVT), Network Video Storage (NVS) and Network Video Analytics (NVA) devices. Implements Discovery, Device, Media, Imaging, Analytics, Events and PTZ services. Write in C# and uses ffmpeg for media decoding.
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    Downloads: 4,595 This Week
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  • 2
    The portable Universal Plug and Play (UPnP) SDK provides support for building UPnP-compliant control points, devices, and bridges on several operating systems. The main repository is at GitHub in https://github.com/pupnp/pupnp. This is just a clone repository for legacy reasons. Old SourceForge repo: git://pupnp.git.sourceforge.net/gitroot/pupnp/pupnp
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    Downloads: 4,992 This Week
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  • 3
    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: 98 This Week
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  • 4
    a POSIX-C implementation of the http://oauth.net/ protocol. libOauth provides functionality to encode URLs and sign HTTP request data according to the oAuth standard.
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    Downloads: 6,984 This Week
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  • High-performance Open Source API Gateway Icon
    High-performance Open Source API Gateway

    KrakenD is a stateless, distributed, high-performance API Gateway that helps you effortlessly adopt microservices

    KrakenD is a high-performance API Gateway optimized for resource efficiency, capable of managing 70,000 requests per second on a single instance. The stateless architecture allows for straightforward, linear scalability, eliminating the need for complex coordination or database maintenance.
  • 5
    Vienna

    Vienna

    An open source Mac OSX RSS reader with support for RSS/Atom feeds

    Vienna is an open source Mac OSX RSS reader with support for RSS/Atom feeds, article storage and management via a SQLite database, written in Objective-C and Cocoa. Feeds can be accessed directly, or through a syncing service supporting the Open Reader API, like BazQux.com, FeedHQ.org, InoReader.com or TheOldReader.com. Development now happens on GitHub: https://github.com/ViennaRSS/vienna-rss
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    Downloads: 363 This Week
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  • 6
    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: 311 This Week
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  • 7
    Docker Compose

    Docker Compose

    Define and run multi-container applications with Docker

    Docker Compose is an open source tool for defining and running multi-container applications with Docker. Compose lets you use a YAML file to configure your application’s services, and then create and start all the services from your configuration with just a single command. Compose works great in all environments: production, staging, testing, development, and on CI workflows. Compose has commands for every stage of your application lifecycle, from starting, stopping and rebuilding services, through to status viewing, streaming of log output and running a one-off command on a service.
    Downloads: 7 This Week
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  • 8
    gRPC

    gRPC

    High performance, open source universal RPC framework

    gRPC is a C-based high performance remote procedure call (RPC) framework that can run in any environment. It efficiently connects services in and across data centers with plenty of support, and can also connect mobile devices and browser clients to backend services. Essentially, it makes it easier for you to create distributed applications and services.
    Downloads: 7 This Week
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  • 9
    Java JWT

    Java JWT

    Java implementation of JSON Web Token (JWT)

    A Java implementation of JSON Web Token (JWT) - RFC 7519. This library requires Java 8 or higher. The last version that supported Java 7 was 3.11.0. The library implements JWT Verification and Signing using several algorithms. The Algorithm defines how a token is signed and verified. It can be instantiated with the raw value of the secret in the case of HMAC algorithms, or the key pairs or KeyProvider in the case of RSA and ECDSA algorithms. Once created, the instance is reusable for token signing and verification operations. When using RSA or ECDSA algorithms and you just need to sign JWTs you can avoid specifying a Public Key by passing a null value. The same can be done with the Private Key when you just need to verify JWTs.
    Downloads: 6 This Week
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  • Cloudflare secures and ensures the reliability of your external-facing resources such as websites, APIs, and applications. Icon
    It protects your internal resources such as behind-the-firewall applications, teams, and devices.
  • 10
    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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  • 11
    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: 5 This Week
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  • 12
    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: 5 This Week
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  • 13
    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.
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    Downloads: 81 This Week
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  • 14
    Matomo

    Matomo

    Alternative to Google Analytics that gives you full control over data

    Google Analytics alternative that protects your data and your customers' privacy. Take back control with Matomo – a powerful web analytics platform that gives you 100% data ownership. You could lose your customers’ trust and risk damaging your reputation if people learn their data is used for Google’s “own purposes”. By choosing the ethical alternative, Matomo, you won’t make privacy sacrifices or compromise your site. You can even use Matomo without needing to ask for consent. With 100% data ownership you get the power to protect your user’s privacy. You know where your data is stored and what’s happening to it, without external influence. We’re serious about privacy here at Matomo and keeping your business GDPR and CCPA compliant. The Google Analytics Importer plugin imports Google Analytics reports into a Matomo instance. When you run an import, your Google Analytics (GA) Property will be automatically created as a Website into Matomo.
    Downloads: 3 This Week
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  • 15
    Playwright

    Playwright

    Node library to automate Chromium, Firefox & WebKit with a single API

    Playwright is a Node library for automating Chromium, Firefox and WebKit using a single API. It supports headless execution for all these browsers on Linux, macOS and Windows, providing automated web browser interactions that are fast, capable, reliable and ever-green. Playwright enables a broad spectrum of cross-browser web automation capabilities, which are used by Single Page Apps and Progressive Web Apps. These include scenarios that span multiple pages, domains and iframes; emulation of mobile devices, geolocation, and permissions; upload and download files and many more.
    Downloads: 3 This Week
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  • 16
    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: 2 This Week
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  • 17
    YAO

    YAO

    Yao A low code engine to create web services and dashboard

    Yao allows developers to create web services by processes. Yao is a low-code engine that creates a database model, writes API services, and describes dashboard interface just by JSON for web & hardware, no code, and 10x productivity. Yao is based on the flow-based programming idea, developed in the Go language, and supports multiple ways to expand the data stream processor. This makes Yao extremely versatile, which can replace programming languages ​​in most scenarios, and is 10 times more efficient than traditional programming languages ​​in terms of reusability and coding efficiency; application performance and resource ratio Better than PHP, JAVA and other languages. Yao has a built-in data management system. By writing JSON to describe the interface layout, 90% of the common interface interaction functions can be realized. It is especially suitable for quickly making various management backgrounds, CRM, ERP, and other internal enterprise systems.
    Downloads: 2 This Week
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  • 18
    General purpose PHP SOAP-client

    General purpose PHP SOAP-client

    A general purpose SOAP client for PHP

    Sick and tired of building crappy SOAP implementations? This package aims to help you with some common SOAP integration pains in PHP. Its goal is to make integrating with SOAP fun again! Since life is too short to read documentation, we've added a scafolding wizard which will get you communicating with your SOAP server in no time! Implementing SOAP extensions is a real pain in the ass. It forces you to overwrite core methods of the built-in SOAP client. If you ever had to implement WSA or WSSE in SOAP, you know that there is something wrong in the core. Therefore, we made it easy for you to extend our SOAP client. You can specify which data transfer handler like e.g. Guzzle you want to use. Depending on the selected handler, you can easily add support for SOAP extensions or advanced authentication through HTTP middlewares.
    Downloads: 1 This Week
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  • 19
    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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  • 20
    NetSuite PHP API Client

    NetSuite PHP API Client

    NetSuite PHP API Client with namespaces and autoloading

    A PHP API client package for NetSuite, pried from the NetSuite PHP Toolkit and made more consumable for modern PHP application development. All of the classes in the NetSuite\Classes namespace are code provided by NetSuite with a license allowing redistribution. The custom work provided by this library separates these nearly 2,000 classes out into their own files and allows the classes to be installed with composer and accessed using standard autoloading support. It allows configuration to be read from the environment, adds support to log requests and responses and provides a simplified client wrapper class (NetSuiteService). You can alternatively place your config in environment variables. This is helpful in hosted environments where deployment of config files is either not desired or practical. You can find the valid keys in the included .env.example file with sample values.
    Downloads: 1 This Week
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  • 21
    Phusion Passenger

    Phusion Passenger

    A fast and robust web server and application server for Ruby

    Passenger® is an app server that runs and automanages your web apps with ease. Also improves security, reliability and scalability. Passenger 6 introduces standardization across your stack by supporting all languages. From business-critical apps with billions of requests per day to small side projects, Passenger is tailored for each scenario. Passenger has a myriad of features that are invaluable to today’s web apps and microservice APIs. You get these benefits (and more) by simply installing Passenger with Nginx or Apache. Passenger was built with high performance and efficiency in mind. With Passenger’s zero-copy architecture, turbocaching and support for multiple concurrency models, you can count on Passenger to get the most out of your hardware. Passenger auto-manages your apps’ processes, restarting them and themselves if they ever crash. Passenger also keeps resource-hogging apps in check, giving your web app maximum uptime.
    Downloads: 1 This Week
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  • 22
    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
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  • 23
    Tracy

    Tracy

    Ease debugging PHP code for cool developers

    Tracy is a tool designed to facilitate debugging PHP code. It is a useful assistant to all PHP programmers, which helps with clear visualizing and logging errors, dumping variables and a lot more. Tracy hints and corrects you just like a good friend watching your back. Look at the picture above. Yes, "did you mean $greeting?" was added to a well-known PHP notice by Tracy. Maybe you feel like: “If Tracy’s so clever, she could fix that error as well!” That is exactly what she can do. One-click only! We have been developing Tracy for over 10 years- and counting! Libraries we provide are therefore highly mature, stable, and widely used. They are trusted by a number of global corporations and many significant websites rely on us. Have you made a mistake in your code? PHP will lets you know by a nerror notice and a gibberish call stack, not easy to work with.
    Downloads: 1 This Week
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  • 24
    WSDL to Go

    WSDL to Go

    WSDL2Go code generation as well as its SOAP proxy

    Generates Go code from a WSDL file. Generate idiomatic Go code as much as possible. Support only Document/Literal wrapped services, which are WS-I compliant. Supports XML, Schema 1.0, SOAP 1.1. Resolve external XML Schemas. Support external and local WSDL.
    Downloads: 1 This Week
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  • 25
    freegeoip

    freegeoip

    IP geolocation web server

    Launched more than 6 years ago, the freegeoip.net API has grown into one of the biggest and most widely used APIs for IP to location services worldwide. The API is used by thousands of developers, SMBs and large corporations around the globe and is currently handling more than 2 billion requests per day. After years of operation and the API remaining almost unchanged, today we announce the complete re-launch of freegeoip into a faster, more advanced and more scalable API service called ipstack. All users that wish to continue using our IP to location service will be required to sign up to obtain a free API access key and perform a few simple changes to their integration. While the new API offers the ability to return data in the same structure as the old freegeoip API, the new API structure offers various options of delivering much more advanced data for IP Addresses.
    Downloads: 1 This Week
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