Open Source Protocols
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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.
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The top-rated AI recruiting platform for faster, smarter hiring.Humanly is an AI-first recruiting platform that helps talent teams hire in days, not months—without adding headcount. Our intuitive CRM pairs with powerful agentic AI to engage and screen every candidate instantly, surfacing top talent fast. Built on insights from over 4 million candidate interactions, Humanly delivers speed, structure, and consistency at scale—engaging 100% of interested candidates and driving pipeline growth through targeted outreach and smart re-engagement. We integrate seamlessly with all major ATSs to reduce manual work, improve data flow, and enhance recruiter efficiency and candidate experience. Independent audits ensure our AI remains fair and bias-free, so you can hire confidently.
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All Things Performance and Partner Marketing, All in One PlaceAutomatically tie revenue back to campaigns, channels, publishers, and networks through marketing attribution. Spend less time juggling reports, and more time optimizing for growth by using a single operating solution for partner and performance marketing.
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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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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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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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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. -
Labra enables you to launch your solutions on Azure, AWS, and Google Cloud quickly and seamlessly—without a single line of code.Labra is designed for cloud businesses, independent software vendors (ISVs), and channel partners looking to streamline their go-to-market strategies, accelerate product listings, and enhance sales efficiency through AI-powered automation and CRM integration. Additionally, it caters to teams seeking to enhance collaboration with cloud providers and partner ecosystems while maintaining control over their sales processes and optimizing their growth potential
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PreMiD
Source code of the PreMiD application
Source code of the PreMiD application. PreMiD is a simple, configurable utility that allows you to show what you're doing on the web in your Discord now playing status. It supports many different websites, and will support multiple users watching the same content simultaneously in an upcoming update. -
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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. -
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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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FeedKit
An RSS, Atom and JSON Feed parser written in Swift
FeedKit is an RSS, Atom and JSON Feed parser written in Swift. Build a URL pointing to an RSS, Atom or JSON Feed. A common scenario in UI environments would be parsing a feed asynchronously from a user-initiated action, such as the touch of a button. Remember, you are responsible for manually bringing the resulting closure to whichever queue is appropriate. Usually to the Main thread, for UI apps, by calling DispatchQueue.main.async. FeedKit adopts Swift 5 Result type, as Result<Feed, ParserError>, and as such, if parsing succeeds you should now have a Strongly Typed Model of an RSS, Atom or JSON Feed, within the Feed enum. The RSS and Atom feed Models are rather extensive throughout the supported namespaces. -
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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. -
Managed Cybersecurity Platform Built for MSPsIn a world that lives and breathes all things digital, every business is at risk. Cybersecurity has become a major problem for small and growing businesses due to limited budgets, resources, time, and training. Hackers are leveraging these vulnerabilities, and most of the existing cybersecurity solutions on the market are too cumbersome, too complicated, and far too costly.
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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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OpenResty
High Performance Web Platform Based on Nginx and LuaJIT
OpenResty is a full-fledged web application server that extends Nginx by seamlessly embedding LuaJIT, bundled Nginx core, numerous third-party modules, and Lua libraries—creating a powerful platform for scalable web services, APIs, and gateways. An extensive ecosystem of Lua libraries and third-party Nginx modules that interoperate cohesively. Supports scripting of SSL, process control, regex, pipes, and logging via Lua APIs. Well-supported documentation, Docker tooling, and commercial support options. -
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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. -
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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. -
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Nomulus
Top-level domain name registry service on Google Cloud Platform
Nomulus is a production-grade, open-source domain registry platform used to operate top-level domains (TLDs). It implements the core registry protocols—EPP for registrar interactions, WHOIS/RDAP for public data access—and manages the lifecycle of domain objects, hosts, and contacts. The system is built to scale and to enforce policy: pricing rules, reserved names, premium tiers, grace periods, and automated renewals are modeled explicitly. It integrates with DNS provisioning, data escrow, and billing so you can run a compliant registry end-to-end rather than stitching together separate services. Operators get admin tools for reporting, manual adjustments, and policy configuration, while registrars interact through standards-compliant channels. Nomulus treats registries as serious infrastructure: audited flows, durable storage, and clear extension points for custom policies and TLD-specific behavior. -
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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. -
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Livebook
Interactive and collaborative code notebooks for Elixir
Livebook is a web application for writing interactive and collaborative code notebooks. Write notebooks in Livebook then securely deploy and share them with your team and company with Livebook Hub/Enterprise. Code notebooks with Markdown support and Code cells where Elixir code is evaluated on demand. Rich code editor through Monaco: with support for autocompletion, inline documentation, code formatting, etc. Interactive results via Kino: display Vega-Lite charts, tables, maps, and more. Automation: use Smart cells to perform high-level tasks and write notebooks faster than ever. Query databases, plot charts, build maps, and more directly from Livebook's UI. Reproducible: Livebook ensures your code runs in a predictable order, all the way down to package management. It also tracks your notebook state, annotating which parts are stale. Collaboration: multiple users can work on the same notebook at once, no additional setup is required. -
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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.
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PyXB (“pixbee”) is a pure Python package that generates Python source code for classes that correspond to data structures defined by XMLSchema. In concept it is similar to JAXB for Java and CodeSynthesis XSD for C++.
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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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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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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. -
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RSS to Telegram Bot
A Telegram RSS bot that cares about your reading experience
A Telegram RSS bot that cares about your reading experience. -
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RSS-Bridge
The RSS feed for websites missing it
The RSS feed for websites missing it. -
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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. -
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Wretch
A tiny wrapper built around fetch with an intuitive syntax
A tiny (~ 3Kb g-zipped) wrapper built around fetch with an intuitive syntax. Wretch is compatible with modern browsers out of the box. For older environments without fetch support, you should get a polyfill. Converts a javascript object to query parameters, then appends this query string to the current url. String values are used as the query string verbatim. Only compatible with browsers that support AbortControllers. Otherwise, you could use a (partial) polyfill. Associates a custom controller with the request. Useful when you need to use your own AbortController, otherwise wretch will create a new controller itself. Aborts the request after a fixed time. If you use a custom AbortController associated with the request, pass it as the second argument. Returns the automatically generated AbortController alongside the current wretch response as a pair.
Open Source Protocols Guide
Open source protocols are the building blocks of modern digital products. They represent a new paradigm in which developers freely share their ideas, code, and resources to promote innovation and collaboration. Open source technology is becoming increasingly popular due to its advantages over proprietary software, including cost savings, customization, and openness.
Open source protocols allow for the independent development of software programs by individuals or organizations without the need to license or purchase expensive software licenses or purchase intellectual property rights from others. This means anyone can develop applications using open source technologies without legal obligations or restrictions on their use. Additionally, open source licenses often provide access to community-developed modifications, bug fixes, updates, and security patches that may be unavailable in more rigidly licensed programs.
Though open source protocols are available for free download online, there are also platforms such as GitHub where developers can find existing versions of popular open-source applications as well as collaborate with other users who have created similar projects. Such platforms not only offer a great place for experts to share their knowledge but also make the process of developing new applications significantly easier overall.
What makes an application “open-source” is its licensing agreement rules known as Free Software Foundation (FSF) guidelines which stipulate how an app's code should be licensed meaning that any modification made by you must remain available under your own license so that others can benefit from it too - basically ensuring freedom/sharing/collaboration within technology development industry while respecting copyright laws simultaneously.
In conclusion open source and protocols are immensely valuable since they let us create secure applications quickly while saving money at same time – all with greater accessibility than before plus ability share knowledge between coders out there too thus democratizing tech industry even further.
Open Source Protocols Features
Open source protocols provide a wide range of features that can be used to create distributed applications, increase interoperability between different components, and improve security.
- Interoperability: Open source protocols promote interoperability by allowing applications from different vendors to interact with each other seamlessly. This enables users to access information more quickly and share it with others in the most efficient way possible.
- Scalability: By using open source protocols, developers can easily scale their application. This allows applications to accommodate a large number of users without sacrificing performance or reliability.
- Security: Open source protocols offer improved security by providing strong encryption algorithms that are regularly updated in order to protect users’ data from malicious attacks or unauthorized access. They also use authentication measures such as digital signatures so that messages cannot be modified without detection.
- Cost Savings: Because open source technologies are available for free (or at very low cost), businesses can save money on development costs while still being able to benefit from the latest technical innovations. Additionally, they have fewer licensing restrictions than proprietary software products, which makes them easier and faster to deploy into production environments.
- Support Network: The success of open source technology is due in part to its dedicated community of developers who support each other through forums, mailing lists, and IRC channels where they exchange ideas about how best to use these tools for various projects.
Types of Open Source Protocols
- HTTP (Hypertext Transfer Protocol) – This is the most commonly used transfer protocol and it allows for communication between web servers and clients. It enables users to request files from a server, such as text documents, images, audio files and more.
- FTP (File Transfer Protocol) – FTP is an application layer internet protocol that allows users to transfer large amounts of data over the internet quickly. It can be used to upload or download files securely between two computers on different networks.
- SSL/TLS (Secure Sockets Layer/ Transport Layer Security) – These are cryptographic protocols that provide secure communications over computer networks by authenticating the server-client connection and providing encryption of data in transit.
- SSH (Secure Shell) - This protocol provides secure access to remote systems through encryption of data exchanged between the client and server machines. It is often used for secure file transfers or even remote system administration of Linux-based systems.
- SMTP (Simple Mail Transfer Protocol) – SMTP is an application layer internet protocol that provides a method for sending emails from one server to another. It uses port 25 which works with both TCP IP and UDP IP protocols.
- IMAP/POP3 (Internet Message Access Protocol/Post Office Protocol 3) - These are application layer internet protocols specifically designed for retrieving email messages from mail servers within client applications like Outlook, Thunderbird, etc., allowing users to access their emails without having to view them online on the terminal window directly on a mail server machine.
Advantages of Open Source Protocols
Open source protocols provide numerous benefits for users, as outlined below:
- Cost Efficiency: Utilizing open source protocols can be much more cost-effective than investing in proprietary software or services. Since the source code is freely available, users can modify and replicate it without having to pay expensive licensing fees.
- Accessibility: Open source protocols are widely accessible since they are developed through collaboration between multiple individuals and organizations. This makes it easier for people to access these resources anywhere in the world.
- Interoperability: Open source protocols make it easy to share information across different systems since they are designed with compatibility in mind. This allows users to work with data across platforms such as mobile devices, computers, and the web.
- Flexibility: With open source protocols, users have full control over how their projects are created and managed. They can customize features to suit their individual needs or even create new tools from scratch if necessary.
- Security & reliability: Open source software is constantly being scrutinized by developers all over the world so any security vulnerabilities or bugs can be quickly identified and fixed before malicious actors take advantage of them. Furthermore, many of these projects undergo rigorous testing processes which ensures that they remain reliable throughout their lifetime.
Who Uses Open Source Protocols?
- Hobbyists: People who are passionate about open source software, which is free and can be modified and redistributed by developers.
- Businesses: Companies who use open source to reduce operational costs and increase agility in their operations. They also benefit from the vast development community that works on open source projects.
- Academic Researchers: Universities and research centers that employ open source protocols for data collection, analysis, visualization, and many other applications.
- Government Organizations: Federal agencies and departments taking advantage of open source technologies to help manage public services while increasing transparency.
- Educational Institutions: Schools that use open source software to teach students how to code, innovate, collaborate and develop problem-solving skills.
- Nonprofits & Charities: Organizations using open-source tools for fundraising campaigns, volunteer management systems, communication platforms etc., allowing them to maximize donations with minimal overhead costs.
- Users with Disabilities & Special Needs: People who require assistance in order to interact with computers or access the internet can have their needs met more easily with the help of specialized hardware/software available in an OS format.
- Independent Developers & Software Engineers:Professionals who design various applications such as mobile games or productivity apps based on a specific operating system platform but make it accessible via all popular OSs through a single development language (usually Java or C++).
How Much Do Open Source Protocols Cost?
Open source protocols typically cost nothing to use. This is because they are freely available for anyone to access and use without asking for permission or paying any kind of fees. Open source protocols are developed by individuals, communities, or organizations who donate their time and expertise to make them available at no cost. The intention is that anyone can benefit from the knowledge gained through these projects, which is why many open source supporters advocate for greater usage of such technologies.
The major benefit of using open source protocols over proprietary alternatives is the reduced financial overhead; after all, you don’t have to pay licensing fees or royalties when using them. However, keep in mind that there may be other costs associated with using open source protocols depending on your specific needs - such as labour costs related to configuring and managing the technology. Additionally, investing in specialized training or support may be necessary if you find yourself needing additional help along the way.
What Do Open Source Protocols Integrate With?
Open source protocols can be integrated with a variety of software types. This includes operating systems, such as Linux, web browsers like Firefox, networking tools like Wireshark, and multimedia authoring applications like Audacity. Additionally, some popular database management systems like MySQL are open source or offer integration with open protocols. Desktop publishing programs such as Scribus also integrate support for open standards. Finally, development tools such as Eclipse have native support for several open standards which allows developers to quickly start building applications that leverage the power of these standards.
Trends Related to Open Source Protocols
- Open source protocols are becoming increasingly more available and popular. This is due to the fact that they allow users to access and share information without restrictions.
- Open source protocols have gained popularity because they are cost-effective alternatives to proprietary protocols. This means companies can save money when using open source solutions.
- Open source protocols are also becoming more secure, as developers are able to quickly patch any security holes they find in the code.
- Due to their increased popularity, more developers are joining open source communities and contributing to development projects. This leads to more robust and feature-rich products for end users.
- Open source protocols have given rise to a new era of collaboration and creativity, allowing users from all around the world to share their work with each other.
- The adoption of open source protocols has also led to a higher level of standardization across different platforms, making it easier for users to switch between different programs or applications without losing any data or functionality.
Getting Started With Open Source Protocols
Open source protocols are an ideal way to store, share, and access digital information. Getting started with open source protocols is fairly straightforward.
- The first step is to identify your individual needs. Depending on the type of file that you need to store or share, you will need specific software and open source licenses to effectively utilize them. For example, if you want to create/view documents or spreadsheets then you would use OpenOffice’s suite of tools which include a word processor (Writer), a spreadsheet application (Calc) as well as applications for presentations (Impress), graphics (Draw), database management systems (Base) etc., all of which are available under an open-source license.
- Next, determine what type of protocol(s) you need for sharing data between yourself and/or other users. HTTPS is used when securely sharing data over the internet whereas FTP can be used for more local transfers such as transferring large amounts of files from one computer to another. SMTP is used for sending emails over the internet while IMAP is used for receiving mail from servers like Gmail or Outlook Exchange Server etc. Selecting the appropriate protocol depends on your needs.
- Once protocols have been chosen, it’s time to download the software associated with those protocols so that they can be implemented correctly on your system(s). Web browsers often come with built-in support for many popular open-source protocols so no further installation may be necessary in some cases. If not already installed however, there are usually freely available versions of these programs online which can be downloaded quickly and easily via a web browser or other means such as through torrent downloads etc.
- Finally, make sure that any required plug-ins have been installed properly so that all components operate together harmoniously within your system environment(s). Plugins are small pieces of code that enable certain features within software programs; without these plugins working correctly many features might not be accessible — this could hamper the overall performance when dealing with larger sized files & protocols over networks etc., therefore it's important to check & double check that all required plugins have been properly downloaded & installed prior to using any software program(s).
By following these basic steps users can get up and running quickly with using open source protocols easily achieve their desired results in a relatively short period of time.