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.

  • Build AI Apps with Gemini 3 on Vertex AI Icon
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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: 2,869 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: 82 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: 50 This Week
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  • 4
    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: 16 This Week
    Last Update:
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    MongoDB Atlas runs apps anywhere

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  • 5
    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: 6 This Week
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  • 6
    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: 6 This Week
    Last Update:
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  • 7
    CloudServer

    CloudServer

    Zenko CloudServer open-source Node.js implementation of S3 protocol

    Zenko CloudServer, an open-source Node.js implementation of the Amazon S3 protocol on the front-end and backend storage capabilities to multiple clouds, including Azure and Google.
    Downloads: 5 This Week
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  • 8
    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: 5 This Week
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  • 9
    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: 5 This Week
    Last Update:
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  • Build on Google Cloud with $300 in Free Credit Icon
    Build on Google Cloud with $300 in Free Credit

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  • 10
    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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  • 11
    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: 3 This Week
    Last Update:
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  • 12
    MyPoorWebServer

    MyPoorWebServer

    Demonstrates fundamental HTTP server implementation principles

    MyPoorWebServer is a C/C++-based web server project that demonstrates fundamental HTTP server implementation principles drawn from classic network programming literature and high-performance server design books. The repository contains source code that implements a basic HTTP server, intended to be compiled and run from the command line, exposing introductory web server functionality such as serving static HTML files and handling simple POST requests. It was originally developed as a resume project to demonstrate understanding of TCP/IP network programming, socket handling, and server lifecycle management, and so it reflects a hands-on approach to building server software from scratch rather than relying on frameworks. The project includes build instructions, example pages to host, and documentation encouraging readers to read reference texts before diving in.
    Downloads: 3 This Week
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  • 13
    NetNewsWire

    NetNewsWire

    RSS reader for macOS and iOS

    NetNewsWire is a free and open source RSS reader for Mac, iPhone, and iPad. NetNewsWire shows you articles from your favorite blogs and news sites and keeps track of what you’ve read. This means you can stop going from page to page in your browser looking for new articles to read. Do it the easy way instead: let NetNewsWire bring you the news. And, if you’ve been getting your news via Facebook and Twitter, with their ads, algorithms, user tracking, outrage, and misinformation, you can switch to NetNewsWire to get news directly and more reliably from the sites you trust.
    Downloads: 3 This Week
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  • 14
    Gatsby

    Gatsby

    Build blazing fast, modern apps and websites with React

    Gatsby is a free and open source web framework based on React that allows you to build blazing fast websites and apps. It offers the latest web technologies, such as React.js, Webpack, modern JavaScript, CSS and more to help you build really fast websites. A Progressive Web App generator, it’s fast in every way that matters.
    Downloads: 2 This Week
    Last Update:
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  • 15
    Next.js Notion Starter Kit

    Next.js Notion Starter Kit

    Deploy your own Notion-powered website in minutes with Next.js

    Next.js Notion Starter Kit is a boilerplate / starter template to quickly build a website (blog, portfolio, documentation site) using Next.js and react-notion-x, while using a public Notion page as a CMS. It’s the same foundation the author uses to power their personal site. The idea is to let you write and manage content in Notion, and have that content rendered as a fully functional, statically-generated React/Next.js site, with minimal setup — usually just a configuration file to point to your root Notion page. The kit brings a lot of convenience: it handles page routing, pretty URLs, automatic generation of tables of contents, responsive design, dark mode, image previews, and even auto-generated social preview images. Because it uses Next.js’s static site generation (or optionally dynamic), it produces fast-loading pages optimized for performance and SEO.
    Downloads: 2 This Week
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  • 16
    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: 2 This Week
    Last Update:
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  • 17
    GeoWebCache

    GeoWebCache

    GWC is a tile server and caching proxy written in Java

    GeoWebCache is a WMS tile cache that lets you serve cached map data to WMS clients, Goole Earth, Google Maps and MS Virtual Earth. The system is pluggable on both ends and does automatic matching to the best available tile. It is very fast and scalable.
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    Downloads: 47 This Week
    Last Update:
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  • 18
    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: 8 This Week
    Last Update:
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  • 19
    iTorrent allows you to download BitTorrent podcasts from iTunes. It transforms BitTorrent podcasts so that you can update them just like any other podcast in iTunes.
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    Downloads: 21 This Week
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  • 20
    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: 9 This Week
    Last Update:
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  • 21
    Podcast Generator

    Podcast Generator

    Open Source Podcast Publishing Solution

    Podcast Generator is an open source Content Management System written in PHP and specifically designed for podcast publishing. It provides the user with the tools to easily manage all of the aspects related to the publication of a podcast, from the upload of episodes to its submission to the iTunes store.
    Downloads: 5 This Week
    Last Update:
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  • 22
    PL/JSON
    NOTICE: we have moved to Github -- https://github.com/pljson/pljson PL/JSON is a generic JSON object written in PL/SQL. Using PL/SQL object syntax, users instantiate a JSON objects and then add members, arrays and additional JSON objects. This object type can store JSON data, in Oracle, persistently.
    Downloads: 5 This Week
    Last Update:
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  • 23
    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: 1 This Week
    Last Update:
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  • 24
    Amazon EKS Pod Identity Webhook

    Amazon EKS Pod Identity Webhook

    Amazon EKS Pod Identity Webhook

    This webhook is for mutating pods that will require AWS IAM access. After version v0.3.0, --in-cluster=true no longer works and is deprecated. Please use --in-cluster=false and manage the cluster certificate with a cert-manager or some other external certificate provisioning system. This is because certificates using the legacy-unknown signer are no longer signed when using the v1 certificates API. Create an OIDC provider in IAM for your cluster. You can find the OIDC discovery endpoint by describing your EKS cluster. Create an IAM role for your pods and modify the trust policy to allow your pod's service account to use the role. All new pod pods launched using this Service Account will be modified to use IAM for pods. Below is an example pod spec with the environment variables and volume fields added by the webhook. To ensure workloads are scheduled on windows nodes have the right environment variables, they must have a nodeSelector targeting windows it must run on.
    Downloads: 1 This Week
    Last Update:
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  • 25
    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
    Last Update:
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