CardBoard allows teams to collaborate online and build whatever they can imagine. It is designed to be simple to use so you don't need to go through a ton of training. Get your whiteboard started quickly by using one of our built in templates. Hold your next retrospective or agile planning meeting with CardBoard. Try now for free => https://cardboardit.com
Xmind - Xmind is a brainstorming and mind mapping application.
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
FeatureMap - FeatureMap story mapping, simple and effective realtime collaboration and collective intelligence tool.
Asana - Asana project management is an effort to re-imagine how we work together, through modern productivity software. Fast and versatile, Asana helps individuals and groups get more done.
MindMeister - Create, share and collaboratively work on mind maps with MindMeister, the leading online mind mapping software. Includes apps for iPhone, iPad and Android.
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.