Which tools do the great startups use to manage work flow?

A major part of succeeding is having tight operations, adhering to ambitious schedules and keeping the workflow optimized. But what’s the best tools for this? 

I am a part of a close network of 150 tech CEO and CTO and the likes in London. We’ve just had a long knowledge share about what we all use to manage this. This is what these successful companies use (my own categorizations, but otherwise I’m just reporting):

Scrum
- Jira
- Sprint.ly 
- Post-it wall 

User feedback 
- Zendesk
- Uservoice 
- Dedicated “feedback collecting” person (junior product guy)
- Made own product
- Getsatisfaction

Task Management
- Asana 
- Trello
- Podio 

PS: Jeg skriver på engelsk fordi min blog (www.daredo.tumblr.com), hvor de fleste tanker også er nedfældet, har flest læsere uderfor Danmark. 

Trello is the shit!!! and now part of the ninja arsenal, Thankyou!