Browse free open source Protocols and projects for Mac 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.

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    Stop Cyber Threats with VM-Series Next-Gen Firewall on Azure

    Native application identity and user-based security for your Azure cloud

    Gain integrated visibility across all traffic in a single pass. Deploy Palo Alto Networks VM-Series to determine application identity and content while automating security policy updates via rich APIs.
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  • 1
    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/JSON 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, FreshRss.org, FeedHQ.org, InoReader.com or TheOldReader.com. Development now happens on GitHub: https://github.com/ViennaRSS/vienna-rss
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    Downloads: 406 This Week
    Last Update:
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  • 2
    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: 83 This Week
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  • 3
    PreMiD

    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.
    Downloads: 52 This Week
    Last Update:
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  • 4
    warp

    warp

    A super-easy, composable, web server framework for warp speeds

    The fundamental building block of warp is the Filter, they can be combined and composed to express rich requirements on requests. A Filter in warp is essentially a function that can operate on some input, either something from a request, or something from a previous Filter, and returns some output, which could be some app-specific type you wish to pass around, or can be some reply to send back as an HTTP response. That might sound simple, but the exciting part is the combinators that exist on the Filter trait. These allow composing smaller Filters into larger ones, allowing you to modularize, and reuse any part of your web server. As awesome as the Filter system is, if warp didn’t provide common web server features, it’d still be annoying to work with. Thus, warp provides a bunch of built-in Filters, allowing you to compose the functionality you need to describe each route or resource or sub-whatever.
    Downloads: 42 This Week
    Last Update:
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  • Our Free Plans just got better! | Auth0 Icon
    Our Free Plans just got better! | Auth0

    With up to 25k MAUs and unlimited Okta connections, our Free Plan lets you focus on what you do best—building great apps.

    You asked, we delivered! Auth0 is excited to expand our Free and Paid plans to include more options so you can focus on building, deploying, and scaling applications without having to worry about your security. Auth0 now, thank yourself later.
    Try free now
  • 5
    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: 29 This Week
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  • 6
    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: 8 This Week
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  • 7
    Nomulus

    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.
    Downloads: 8 This Week
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  • 8
    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: 7 This Week
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  • 9
    OpenResty

    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.
    Downloads: 7 This Week
    Last Update:
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  • Enterprise-grade ITSM, for every business Icon
    Enterprise-grade ITSM, for every business

    Give your IT, operations, and business teams the ability to deliver exceptional services—without the complexity.

    Freshservice is an intuitive, AI-powered platform that helps IT, operations, and business teams deliver exceptional service without the usual complexity. Automate repetitive tasks, resolve issues faster, and provide seamless support across the organization. From managing incidents and assets to driving smarter decisions, Freshservice makes it easy to stay efficient and scale with confidence.
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  • 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
    Last Update:
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  • 11
    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: 20 This Week
    Last Update:
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  • 12
    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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    Downloads: 29 This Week
    Last Update:
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  • 13
    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: 4 This Week
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  • 14
    Express Rate Limit

    Express Rate Limit

    Basic rate-limiting middleware for the Express web server

    Express Rate Limit is a middleware for Express applications that helps prevent abuse by limiting repeated requests to public APIs and endpoints.
    Downloads: 3 This Week
    Last Update:
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  • 15
    LANraragi

    LANraragi

    Web application for archival and reading of manga/doujinshi

    LANraragi is a web application for archiving and reading manga/doujinshi. Lightweight and Docker-ready, it's designed for NAS and server environments, providing a user-friendly interface for managing comic collections.​
    Downloads: 3 This Week
    Last Update:
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  • 16
    Rod

    Rod

    A Devtools driver for web automation and scraping

    Rod is a high-level driver for DevTools Protocol. It's widely used for web automation and scraping. Rod can automate most things in the browser that can be done manually. Chained context design, intuitive to timeout or cancel the long-running task. Auto-wait elements to be ready. Debugging friendly, auto input tracing, remote monitoring headless browser. Thread-safe for all operations. Automatically find or download browser. High-level helpers like WaitStable, WaitRequestIdle, HijackRequests, WaitDownload, etc. Two-step WaitEvent design, never miss an event (how it works). Correctly handles nested iframes or shadow DOMs. No zombie browser process after the crash (how it works). CI enforced 100% test coverage.
    Downloads: 3 This Week
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  • 17
    Site Kit for WordPress

    Site Kit for WordPress

    Site Kit is a one-stop solution for WordPress users

    Site Kit is a first-party WordPress plugin that brings key Google services into a single dashboard so site owners can see how their content performs and fix issues without leaving wp-admin. After a guided setup and verification flow, it connects properties to Search Console, Analytics, AdSense, PageSpeed Insights, and other services, surfacing the most relevant metrics per page and per site. The plugin focuses on clarity: traffic sources, search queries, top pages, and monetization signals appear alongside actionable performance recommendations. It also handles authentication and permission scopes securely, so multiple collaborators can access insights without sharing credentials. Widgets and contextual panels put data where it’s needed—for example, on the post list or edit screen—reducing tab-switching. For developers and agencies, Site Kit simplifies client onboarding and standardizes reporting across many sites.
    Downloads: 3 This Week
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  • 18
    Algernon

    Algernon

    Small self-contained pure-Go web server with Lua, Markdown, HTTP/2

    Web server with built-in support for QUIC, HTTP/2, Lua, Teal, Markdown, Pongo2, HyperApp, Amber, Sass(SCSS), GCSS, JSX, BoltDB (built-in, stores the database in a file, like SQLite), Redis, PostgreSQL, MariaDB/MySQL, rate limiting, graceful shutdown, plugins, users and permissions. Written in Go. Uses Bolt (built-in), MySQL, PostgreSQL or Redis (recommended) for the database backend, permissions2 for handling users and permissions, gopher-Lua for interpreting and running Lua, optional Teal for type-safe Lua scripting, http2 for serving HTTP/2, QUIC for serving over QUIC, blackfriday for Markdown rendering, amber for Amber templates, Pongo2 for Pongo2 templates, Sass(SCSS) and GCSS for CSS preprocessing. logrus is used for logging, goja-babel for converting from JSX to JavaScript, tollbooth for rate limiting, pie for plugins and graceful for graceful shutdowns.
    Downloads: 2 This Week
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  • 19
    Glean

    Glean

    A self-hosted RSS reader and personal knowledge management tool

    Glean is a self-hosted RSS reader and personal knowledge management platform designed to help information-heavy users efficiently aggregate, browse, and organize content from feeds. It centralizes RSS/Atom subscriptions, offering clean reading views, tagging, and organization features such as folders and bookmarks, while giving users full control over their data by deploying on their own infrastructure. Glean also includes real-time background synchronization, enabling feeds to update at regular intervals without manual refresh, and it supports importing and exporting subscription lists for portability. With a modern responsive UI and optional admin dashboard, Glean balances readability with lightweight performance, making it suited for both individual readers and teams. Its knowledge management capabilities are augmented by features like smart filtering, “read later” queues, and future plans for AI-driven summaries and preference-based recommendations.
    Downloads: 2 This Week
    Last Update:
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  • 20
    Savon

    Savon

    Heavy metal SOAP client

    Heavy metal SOAP client. Savon version 2 is available through Rubygems.
    Downloads: 2 This Week
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  • 21
    Serverless Express by Vendia

    Serverless Express by Vendia

    Run Node.js web applications and APIs using existing frameworks

    Run REST APIs and other web applications using your existing Node.js application framework (Express, Koa, Hapi, Sails, etc.), on top of AWS Lambda and Amazon API Gateway. Vendia is the real-time data cloud for rapidly building applications that securely share data across departments, companies, clouds, and regions. We’re excited to announce the latest release of Vendia Share! This release includes new features like smart contracts, user-level transactions, the beta release of Azure support, and more. We also added a pay-as-you-go pricing plan that gives developers from organizations of any size access to Vendia's enterprise-grade platform for building data-driven, multi-party, cross-cloud apps. If you want to migrate an existing application to AWS Lambda, it's advised to get the minimal example up and running first, and then copy your application source in.
    Downloads: 2 This Week
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  • 22
    Static Web Server

    Static Web Server

    A cross-platform, high-performance and asynchronous web server

    Static Web Server (or SWS abbreviated) is a tiny and fast production-ready web server suitable to serve static web files or assets. It is focused on lightness and easy-to-use principles while keeping high performance and safety powered by The Rust Programming Language. Written on top of Hyper and Tokio runtime, it provides concurrent and asynchronous networking abilities and the latest HTTP/1 - HTTP/2 implementations. Cross-platform and available for Linux, macOS, Windows, FreeBSD, NetBSD, Android, Docker and Wasm (via Wasmer).
    Downloads: 2 This Week
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  • 23
    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: 2 This Week
    Last Update:
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  • 24
    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: 2 This Week
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  • 25
    Zeep

    Zeep

    A Python SOAP client

    A fast and modern Python SOAP client. Compatible with Python 3.7, 3.8, 3.9, 3.10, 3.11, and PyPy. Build on top of lxml and requests. Support for Soap 1.1, Soap 1.2 and HTTP bindings. Support for WS-Addressing headers. Support for WSSE (UserNameToken / x.509 signing) Support for asyncio via httpx. Experimental support for XOP messages. Zeep inspects the WSDL document and generates the corresponding code to use the services and types in the document. This provides an easy-to-use programmatic interface to a SOAP server. Parsing the XML documents is done by using the lxml library. This is the most performant and compliant Python XML library currently available. This results in major speed benefits when processing large SOAP responses. The SOAP specifications are unfortunately really vague and leave a lot of things open for interpretation.
    Downloads: 2 This Week
    Last Update:
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