• Dabbleboard - Online whiteboard for drawing
  in Public bookmarks with collaborative draw editor online tools whiteboard by 6 users
• http://www.sneffel.com/#roomId=7233
  generates a room ID URL you can send
  in Public bookmarks with chat collaborative draw editor online whiteboard
• Scriblink - Your Online Whiteboard
  whiteboard that users can share online in real-time
  in Public bookmarks with collaborative draw editor sketchpad whiteboard by 10 users
• SourceForge.net: Open Flash Board
  Open Flash Board is a free, open source whiteboard drawing application. OFB provides the ability to draw with various tools (curve, circle, line, rectangle), move the various drawn objects, group objects, scale objects and grouped objects and save as XML
  in Public bookmarks with embed flash opensource tools whiteboard
• Team Apart - Real simple. Real-time.
  Meet face to face with others to quickly and efficiently share information. Go ahead, try it out now!
  in Public bookmarks with chat collaboration notepad videochat whiteboard
• Team WhiteBoarding with Twiddla - Painless Team Collaboration for the Web
  Twiddla is a free, no-setup, web-based meeting playground. Mark up websites, graphics, and photos, or start brainstorming on a blank canvas. Voice and Text chat too!" embed widgets
  in Public bookmarks with collaboration mathematic_formulas socialsoftware tool whiteboard by 9 users

whiteboard from all users