gnizr™ (gə-nīzər) is an open source application for social bookmarking and web mashup. It is easy to use gnizr to create a personalized del.icio.us-like portal for a group of friends and colleagues to store, classify and share information, and to mash-it-up with information about location. It's free.
Connect. Share. Collaborate.
Elgg is free and open source software
It provides the components you need to build a fully-featured social environment, including:
* Profiles
Elgg comes with default profile fields that can be extended or completely customized by the site administrator.
* Activity Streams
The granular activity stream feature ensures you keep up to date with all site activity.
* Blogging / Microblogging
Blogging and microblogging functionality that is both powerful, yet simple to use.
* Groups
Collaborate around specific topics via public, private or hidden groups.
* Access controls
Control who can access your content.
* Web Services API
Expose functionality through the REST API by building a plugin and then either publish the API for other developers to build clients or provide your own.
* See more features
Problem: Malcolm, Zoe, Kaylee, Simon, and River all work together on the same web development team. They are avid Twitter users and want a similar way to broadcast quick messages and updates to everyone on their team. Since these messages may contain confidential information, the team doesn't want them published to their public Twitter timelines or to any followers who are not part of the team. Solution: GroupTweet allows Malcolm and the gang to send messages via Twitter that are instantly broadcasted privately to only the team members.
12 Top, Free Ways to Collaborate Online February 28th, 2008 (4:00pm) Samuel Dean 22 Comments Applications that make it easy to share and collaborate are often of much more use to web workers than they are to standard office workers. Especially if you wor
AROUNDMe is the perfect solution for anyone wishing to create a collaborative social space on the Web.
With AROUNDMe you can create one or many webspaces (web sites). In each webspace you get tools such as a wiki, blog and forum from which you can build your social space!
You can make your webspace private meaning that only those people that you invite in can see your webspace or open meaning that anyone can see it.
With open webspaces anyone with an OpenID can connect to your webspace and join in the fun if you have given them permissions to contribute.
AROUNDMe is free. You can download it and make your own webspace, webspaces for your family and friends or a wider community of people.
Features
* Create single or multiple webspaces.
* Theme selection at creation builds pre-enabled webspaces.
* Each webspace can have multiple web pages.
* Multiple plugins can be included on each web page.
* Make webspaces private (invitation only) or public.
* Plugin API (included plugins are a wiki, blog, forum, poll, events and a guest book plugin).
* OpenID accessibility – no more separate passwords and user names for each webspace!
* Configurable MIME type file upload and storage.
* Full CSS and HTML control for easy web page creation.
* Multilingual interface (defaults to OpenID language settings if language pack is installed).