Open Source Collaboration Software

CryptPad is an open-source, end-to-end encrypted collaborative office suite developed by XWiki SAS. It offers a privacy-focused alternative to mainstream cloud-based productivity tools, enabling users to create, edit, and share documents securely without compromising data privacy. All content is encrypted client-side, ensuring that only authorized users can access the information. CryptPad supports various applications, including rich text documents, spreadsheets, presentations, code editing, kanban boards, polls, and whiteboards, facilitating real-time collaboration among teams. Users can access CryptPad without creating an account, and the platform also offers self-hosting options for organizations seeking full control over their data.

SparkleShare creates a special folder on your computer. You can add remotely hosted folders (or "projects") to this folder. These projects will be automatically kept in sync with both the host and all of your peers when someone adds, removes or edits a file. SparkleShare was made to cover certain use cases, but doesn't handle every scenario well. SparkleShare uses the version control system Git under the hood, so setting up a host yourself is relatively easy. Using your own host gives you more privacy and control, as well as lots of cheap storage space and higher transfer speeds. The idea of SparkleShare sprouted at the GNOME Usability Hackfest in London, where a couple of designers came to the conclusion that they didn't have a good (Open Source) collaboration tool to share their work.

Zimbra is an open source server and client technology for next-generation enterprise messaging and collaboration. Please see www.zimbra.com for the latest news and downloads.

Application sharing software that allows individual windows to be replicated to other computers. Remote collaboration tool based on a modified VNC protocol. Its advantage is to keep some things, like email, private, while sharing other desktop apps.

ATUIN (Atuin the unique innovation network) is a wiki-inspired collaboration platform for creating a problem-solution network written in PHP (implementing the Zend Framework) using XML/RDF files.

Asterisk PBX Integration Zimlet is an Extension for Zimbra Collaboration Suite. The Zimlet does Interface with the Asterisk Manager Interface to integrate with Asterisk PBX. The main focus is dial-on-click for Phone numbers inside Contacts and Emails.

A secure collaborative framework that is being used by other projects such as CFAgent (online customer service), CFWeb (pure HTTP communication for CFAgent) and much more in addition to serving as a standalone all-in-one collaboration platform by itself.

Coefficient is a project-based collaboration platform deployable as either a J2EE or a Web application. It provides collaboration tools as hot deployable modules. It also provides a workflow engine to help guide projects through their development cycle.

ConneX is a pure p2p collaboration platform based on JXTA technologie. its provides Real-Time collaboration tools in form of Plug-ins (instant messaging, file sharing, chat, whiteboard, slide show)100% Java.

Converspace is a collaboration platform written in PHP.

Convey is a real-time, online, multi-user collaboration tool which augments text, graphics, and symbols. Examples of graphics include shapes, mathematical expressions, diagrams, flow charts, and pictures.

The Collaboration Environment, supporting e-Science, is a comprehensive resource sharing and collaboration platform specific for research group.

Enterprise Collabortion Suite 2004. ECS2004 is a Web Mail, Shared Calendar, Projects, Helpdesk, Survey Engine, File Manager, Contacts, Forums and IM suite. Easy to use and a very low user learning curve. Professional look and feel. Easy installation.

ExtremeTalk(XT)是一个用于企业或者组织内部进行在线通讯的，基于XMPP(Jabber)协议的即时通讯系统。ExtremeTalk(XT) is an Instant Messaging(IM) collaboration platform based on XMPP(Jabber) for enterprises and organizations

GROUP-E integrates groupware, project management and business server on one platform. The solution is based on a LAMP architecture (Linux, Apache, MySQL, PHP).

Kablink open team collaboration software uses social networking to unify team workspaces w/ real-time web conferencing. Collaboration for knowledge networking, program management, communities-of-practice, telework, other business process/functional areas

SyncShare Server is a secure messaging and real-time collaboration platform. Build solutions to connect people, data, and applications through firewalls and mobile devices. It handles all networking, security issues and lets one focus on the business

Messy is a collaboration tool for distributed teams. It provides for instant messaging between members of the collaborating groups, a basic group management framework over which additional capabilities can be layered, and a sample concurrent editor.

Multiplayer Notepad is a collaboration tool that allows multiple users to edit a single document with real-time synchronization between them.

OCP: Online Collaboration Platform facilitates users to cooperate in communities, across org. boundaries, on the development of products, services & knowledge. ECM-tool + handy UI (by Logica). Knowledge/content can be developed, secured, disclosed.

OpComm - The Operational Communicator - a IM/collaboration software which should help developers do realtime design and development collaboration even being in distant places of the world, or game players to communicate efficiently during a network game.

Open Project Services (OPS) is a project collaboration platform, integrating server components such as e-mail, calendaring, timesheets, documents, knowledge, etc. with standards complient clients. It consists of a project server and a set of client plugi

The vision for WGCT is to become a real-time collaboration for documents. The furthest I have brought it to is to have, near-real-time collaboration for only text. I hope you will participate in this project and pursue it's vision.

Open-Xchange collaboration suite. Visit http://www.open-xchange.com/header/community_area.html to get more information about getting support and reporting bugs.

Output Messenger is a distraction-free collaboration tool which brings all your communications at one place. You can avail persistent chat rooms, one-to-one chat, searchable chat history, file sharing via drag & drop and clipboard , Hotkeys etc. This intranet messenger provides you centralized control on user groups and client settings . Moreover, its now having in-built private social network.