Tunnel Vision is a browser extension that shows you what you should be working on, every time you open a new tab. Now whenever you get distracted, you've got a reminder what to do instead.

The extension integrates with Trello so you don't need to enter your todo's all over again. Simply connect your account, and Tunnel Vision will pick the next available card for each of your projects. Tunnel Vision is available for Chrome today with support for Safari coming soon.