Open source collaboration softwares

Standard client–server software

Access Grid, for audio and video based collaboration

Citadel/UX, with support for native groupware clients (Kontact, Novell Evolution, Microsoft Outlook) and web interface

Cyn.in

eGroupWare, with support for native groupware clients (Kontact, Novell Evolution, Microsoft Outlook) and web interface

Group-Office groupware and CRM

Kolab, various native PIM clients

LibreSource

OpenGroupware.org

phpGroupWare

Scalix

SOGo, integrated email, calendaring with Apple iCal, Mozilla Thunderbird and native Outlook compatibility

Spicebird, integrated email, calendaring and chat; Windows and Linux

Teambox, Basecamp-style project management software with focus on GTD task management and conversations. (Only V3 and prior are open-source.)

Zarafa

Zimbra

Groupware: Web based software

Bricolage, content management system

Collabtive, web-based project management software

BigBlueButton, Web meetings

DotNetNuke, also called DNN: module based, evolved from ASP 1.0 demo applications

eGroupWare, a free open source groupware software intended for businesses from small to enterprises
EtherPad, collaborative drafting with chat

Feng Office Community Edition

Group-Office, Web based groupware for sharing calendars, files, e-mail, CRM, Projects, Mobile Synchronization and much more.
Horde

Jumper 2.0, collaborative search engine and knowledge management platform

Kolab Groupware, integrated Roundcube web frontend

Kune, collaborative federated social network, based on Apache Wave

FusionForge, has wiki, forums, mailing lists, FTP, SSH, subdomains, hosting, email alias, backups, CVS/SVN, task management

MediaWiki, which provides core content management and integrates with many other tools via extensions

OpenBroadcaster Radio station in a box

phpGroupWare

Simple Groupware

SOGo, integrated email, calendaring with Apple iCal, Mozilla Thunderbird and native Outlook 

compatibility

Tiki Wiki CMS Groupware, has wiki, forums, calendar, ticket system, workflow engine

Tine 2.0

Tonido, free collaborative software with workspace synchronizing, Web access from personal desktop; cross-platform

Zarafa, full MAPI MS Exchange replacement for Linux, GPL+proprietary

Zimbra

Other

Alfresco, enterprise content management system: document management, workflow, and portal

Drupal Framework, open source content management framework: document management, web pages, attachments, forums, photos, social profiles, collaboration tools

eXo Platform, suite for enterprise content management (DMS, WCM, workflow) and collaboration (mail, instant messaging, shared calendars, address books)

KnowledgeTree, document management system: document management, workflow, portal

Liferay Enterprise Portal, open source enterprise portal: document management, wiki, social tools, workflow

LogicalDOC, document management system: document management, workflow

MySource Matrix, enterprise Web content management system from Squiz

Nuxeo EP, enterprise content management system: document management, workflow

OpenKM, open source document management system: document management

ResourceSpace, digital asset management

Cloud collaboration wiki

Cloud collaboration brings together new advances in cloud computing and collaboration that are becoming more and more necessary in firms operating in an increasingly globalized world. 

Cloud computing is a marketing term for technologies that provide software, data access, and storage services that do not require end-user knowledge of the physical location and configuration of the system that delivers the services. 

A parallel to this concept can be drawn with the electricity grid, where end-users consume power without needing to understand the component devices or infrastructure required to utilize the technology. 

Collaboration, in this case, refers to the ability of workers in a company to work together simultaneously on a particular task. In the past, most document collaboration would have to be completed face to face. However, collaboration has become more complex, with the need to work with people all over the world in real time on a variety of different types of documents, using different devices. 

While growth in the collaboration sector is still growing rapidly, it has been noted that the uptake of cloud collaboration services has reached a point where it is less to do with the ability of current technology, and more to do with the reluctance of workers to collaborate in this way. 

A report by Erica Rugullies mapped out five reasons why workers are reluctant to collaborate more.These are: 

• People resist sharing their knowledge. 
• Users are most comfortable using e-mail as their primary electronic collaboration tool. 
• People do not have incentive to change their behaviour. 
• Teams that want to or are selected to use the software do not have strong team leaders who push for more collaboration. 
• Senior management is not actively involved in or does not support the team collaboration initiative. 

As a result, many providers of cloud collaboration tools have created solutions to these problems. These include the integration of email alerts into collaboration software and the ability to see who is viewing the document at any time. All the tools a team could need are put into one piece of software so workers no longer have to rely on email based solutions.