What are some alternatives?
When comparing Stormboard and OpenBoard, you can also consider the following products
MindMeister - Create, share and collaboratively work on mind maps with MindMeister, the leading online mind mapping software. Includes apps for iPhone, iPad and Android.
Conceptboard - Instant Whiteboards for Teams & Projects
XMind - XMind is a brainstorming and mind mapping application.
ActivInspire - ActivInspire interactive whiteboard software is a classroom teaching software from Promethean for...
MindManager - With MindManager, flexible mind maps promote freeform thinking and quick organization of ideas, so creativity and productivity can live in harmony.
Microsoft Whiteboard - The canvas where ideas, content, & people come together.