What's Trello ?
Trello is a really nice application to manage about everything you want. The GUI is really cool and simple to use, we are actually testing it in my company and we have a very good first feeling. If you want to discover more, don't hesitate to watch the presentation video and give it a try at Trello website.
Trello provides a very nice notification system, instead of spamming
you with mail everytimes something happens, it detects your activity
on the site and sends you mail only when you're offline / idle. The
only thing I miss is the hability to see if I have missed
notification in my pinned tab. I remembered of a good
userscript for GMail allowing to display the number of unread
emails. As I have no experience in GreaseMonkey scripts, I used the
previous one as a learning base and did a script allowing to see the
number of missed notification (from 1 to 9, and displaying a + if it
You can see it in action in the blog post picture next to GMail pinned tab in Chrome.