Best Open Source Protocols 2025

Protocols

Protocols Czech Clear Filters

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.

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

MongoDB Atlas provides built-in vector search and a flexible document model so developers can build, scale, and run gen AI apps without stitching together multiple databases. From LLM integration to semantic search, Atlas simplifies your AI architecture—and it’s free to get started.

Start Free
Simple, Secure Domain Registration
Get your domain at wholesale price. Cloudflare offers simple, secure registration with no markups, plus free DNS, CDN, and SSL integration.

Register or renew your domain and pay only what we pay. No markups, hidden fees, or surprise add-ons. Choose from over 400 TLDs (.com, .ai, .dev). Every domain is integrated with Cloudflare's industry-leading DNS, CDN, and free SSL to make your site faster and more secure. Simple, secure, at-cost domain registration.

Sign up for free
1

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

13 Reviews

Downloads: 76 This Week

Last Update: 2025-09-05
See Project
2

ZK - Simply Ajax and Mobile

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.

45 Reviews

Downloads: 36 This Week

Last Update: 2025-09-04
See Project
3

EASYBuilderEASYDATACenter

NET4.5 Simple Application Builder + Reporting

Cheap RESTFULL / WEBSocket multiplatform backend Server Cheap NET4.5 Simple Application Builder + Reporting

Downloads: 0 This Week

Last Update: 2022-10-21
See Project
4

Obalky knih

This librarian project aims to collect images of book cover pages allowing users (libraries) to integrate them to their WebOPAC. Particular images are acquired by scanning book covers by participating libraries or downloaded from co-operating publishers.

Downloads: 0 This Week

Last Update: 2014-03-05
See Project
MongoDB Atlas runs apps anywhere
Deploy in 115+ regions with the modern database for every enterprise.

MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.

Start Free
5

Vindaloo CMS

Vindaloo is an open source content management system based on PHP, MySQL (or other databases), javascript, AJAX. The Vindaloo is created for most "user friendly" work with your web.

Downloads: 0 This Week

Last Update: 2013-04-24
See Project
6

WASOLIC

WASOLIC is a Web-based Application to Search Online Library Catalogues. Main technologies are .NET, WCF, Silverlight / Mono, Moonlight.

Downloads: 0 This Week

Last Update: 2015-02-02
See Project
7

Feed'n Read

Feed'n Read is an open Java based newsfeed reader. It is powered by the Sun ROME syndication framework and supports RSS 0.90, 0.91, 0.92, 0.93, 0.94, 1.0, 2.0, ATOM 0.3 and 1.0). Intuitive, fast and responsive ui using eclipse technologies (JFace / SWT)

1 Review

Downloads: 1 This Week

Last Update: 2013-06-04
See Project