Apps to Real time Collaboration

OSQA is a robust, open-source question and answer system designed to power community-driven knowledge sharing platforms. Built on Python and Django, it provides the tools needed to create Stack Overflow-style forums where users can ask, answer, and rate questions.

Open Source Social Network (OSSN) is a powerful and feature-rich open-source platform for building social networks. It prioritizes user control, data privacy, and freedom of expression.

Mockup Designer is an intuitive web-based tool enabling users to rapidly create mockups, wireframes, and simple prototypes. It simplifies the initial stages of design and collaboration with a drag-and-drop interface and real-time co-editing capabilities.

OpenKM is a robust, open-source document management system designed to help organizations manage, track, and secure electronic documents. It offers a web-based interface for easy access and collaboration, featuring advanced search capabilities, workflow automation, and integration options.

Hack Chat is a refreshingly simple and open-source chat application designed for immediate, no-nonsense communication. Forget complex sign-ups and cluttered interfaces; Hack Chat gets you talking instantly in various channels.

Openfire is a powerful, open-source instant messaging and group chat server built on the XMPP protocol. It enables real-time communication, collaboration, and presence management for individuals and organizations, offering robust features and a modular architecture for customization.

ejabberd is a robust, scalable, and modular XMPP application server designed for real-time communication, supporting a wide range of features including chat, group messaging, federation, and security protocols. Written primarily in Erlang, it's known for its high performance and reliability.

kune is a distributed social network and collaboration platform designed for privacy and freedom of speech. It offers features like group chat, file sharing, task management, and real-time collaboration, operating on a decentralized architecture.

Timeline is a powerful, cross-platform application designed for creating, visualizing, and navigating historical or fictional events on an interactive timeline. It's ideal for researchers, writers, educators, and anyone needing to organize complex sequences of events.

Eclipse Che is an open-source, cloud-native developer workspace server and environment designed for teams. It provides a consistent, collaborative, and portable development experience accessible through a web browser.

nuBuilder is a robust open-source platform for rapidly developing web-based business applications. Leveraging PHP, MySQL, and JavaScript, it enables users to build data-centric applications quickly and efficiently, storing all components within its MySQL database for dynamic deployment.

Diagramo is a robust, open-source web-based diagramming tool perfect for creating flowcharts, graphs, and various diagrams directly in your browser. Built on HTML5, it offers real-time collaboration and flexible export options, making it accessible and versatile.

Tuleap Open ALM is a comprehensive open-source platform designed for agile project management and software development teams. It integrates various tools like Git, Kanban, Scrum, and issue tracking into a single, unified environment.

DrawPile is a free and open-source collaborative drawing program that allows multiple users to sketch simultaneously on a shared canvas in real time, perfect for brainstorming, creating comics, or just having fun drawing together online.

Chamilo is a free, open-source learning management system (LMS) designed to improve access to education. It offers a comprehensive suite of tools for creating, managing, and delivering online courses and training programs, suitable for educational institutions and corporate environments alike.

Horde Groupware is a free, web-based suite of applications designed for collaboration and productivity. Built on the robust Horde framework, it offers a comprehensive set of tools including webmail, calendar, task management, and note-taking, providing an integrated platform for individuals and teams.

Novius OS is a flexible, open-source content management system (CMS) designed for creating and managing websites, e-commerce stores, intranets, and more. Built on the robust FuelPHP framework, it offers a modular architecture and an intuitive interface for effective digital content management.

EtherCalc is a free and open-source web-based spreadsheet application designed for real-time collaborative editing. It allows multiple users to simultaneously view and edit the same spreadsheet directly in a web browser without requiring any software installation, making it ideal for collaborative data entry and basic calculations.

Open365 is a comprehensive, open-source productivity suite offering cloud storage, office applications, and communication tools. Built upon a foundation of open-source technologies like KDE, Seafile, and LibreOffice, it provides a robust alternative to proprietary solutions, emphasizing privacy and control.

Apache OpenMeetings is a robust, open-source web conferencing and collaboration software. It provides a comprehensive suite of tools for online meetings, presentations, training, and group activities, all accessible directly through your web browser.

Dudle is an open-source online survey and event coordination tool designed for simple and private scheduling without registration. It prioritizes user privacy and provides a clean, ad-free experience for creating polls and managing meeting availabilities.

Wiktionary is a collaborative, open-source dictionary project spanning numerous languages. It aims to provide comprehensive linguistic information, including definitions, etymologies, pronunciations, and translations, for words across the globe, accessible online and freely available.

SOGo is a powerful open-source groupware server designed for scalability and simplicity. It provides a comprehensive suite of collaborative features including webmail, calendaring, contact management, and task management, with strong support for standard protocols like CalDAV and CardDAV.

ShareLaTeX is a powerful online LaTeX editor designed for collaborative writing and publishing. It offers real-time collaboration, integrated tools, and easy access from any web browser, making it ideal for academic and technical document creation.

OpenProject is a powerful, web-based open-source project management software designed for teams of all sizes. It offers comprehensive tools for managing projects, tasks, teams, and communication in one centralized platform. Ideal for organizations prioritizing collaboration, flexibility, and data control.

Framadate is a free, ad-free online service designed for scheduling appointments and making group decisions through simple polls. It emphasizes privacy and ease of use, requiring no registration to create or participate in events and polls.

Sandstorm.io is a self-hostable platform designed to empower users to run web applications securely on their own servers while ensuring strong privacy and sandboxing for each application instance.

CryptPad is a suite of collaborative and encrypted web applications, providing a secure and private environment for document editing, spreadsheets, presentations, and more. Leveraging zero-knowledge encryption, it ensures that only you and your collaborators can access your content, making it ideal for sensitive information.

CKEditor is a powerful open-source WYSIWYG HTML editor designed to be embedded into web pages, providing developers with a robust solution for enabling rich text editing capabilities for their users. It transforms simple textareas into fully-featured content creation environments.

Alfresco Community Edition is a powerful open-source enterprise content management (ECM) system offering robust document management, collaboration, and workflow capabilities.