Last added:
last+7+days  last+14+days  last+30+days  added+any+time 
Web Widgets: Small objects that you embed on a personal webpage to display content, information or services
communication  publishing  learning_activities  poll_survey  interactive_maps  tracking 
Web Services: Websites you go to in order to benefit from a service.
create  create_documents  create_artythings  create_graphics  create_presentations  create_mindmaps  create_games  manage  catalog  manage_groups  run_meetings  share  learn_together  share_media  share_content  find  find_content  find_websites  find_software 

By default, only items added within the last 7 days are shown. Click on any tag below to see all items in a given category. Click on "added any time" to see the full listing of items (be warned that the page may take a bit of time to load).

web_services

create

create_mindmaps

Lovely Charts
(From website). With Lovely Charts's extremely simple and intuitive drag'n drop drawing mechanism, you'll be able to focus on what really matters. You won't have to draw boxes and arrows, you won't have to worry about what symbol to use.
 
MindMeister
MindMeister brings the concept of mind mapping to the web, using its facilities for real-time collaboration to allow truly global brainstorming sessions.

Users can create, manage and share mind maps online and access them anytime, from anywhere. In brainstorming mode, fellow MindMeisters from around the world (or just in different rooms) can simultaneously work on the same mind map - and see each other's changes as they happen. Using integrated Skype calls, they can throw around new ideas and put them down on "paper" at the same time.
 
Diigo
(from website). Wridea is an online idea management and collaboration service which is developed for anyone who is interested in managing their ideas on an innovative service with their friends.