"on displays events and tasks right on your desktop using Eon widgets. Adding and removing events and tasks in Eon synchronizes immediately with iCal."

real-time, collaborative Todo list

SelfControl 1.2.2 for OSX -- block yr email, facebook, twitter for blocks of time, but still access rest of web: http://bit.ly/emqeW
Is email a distraction? SelfControl is an OS X application which blocks access to incoming and/or outgoing mail servers and websites for a predetermined period of time. For example, you could block access to your email, facebook, and twitter for 90 minutes, but still have access to the rest of the web. Once started, it can not be undone by the application, by deleting the application, or by restarting the computer – you must wait for the timer to run out.

Just got to 600 documents in my Yep library. Still one of my favorite pieces of software ever. http://bit.ly/s2TQG

Great video from @boagworld: perspectives & contexts, capturing actions from paper... 17mins, all great tips! http://tinyurl.com/mkykmm

TruePreview adds a preference panel to Mail's preferences that allows you to specify a delay before marking messages as read. Additionally, it allows an independent per-account delay, if desired

Calaboration makes it easy to set up iCal to view and edit your Google Calendar calendars. It automatically finds all of your calendars and allows you to add any of them to iCal

Quickly post time to activeCollab, Basecamp, Blinksale, Cashboard, Fogbugz, FreeAgent, Freshbooks, Harvest, or Tick.

Sifter is a hosted bug and issue tracking application focused on making work less tedious.

postica lets you create sticky notes, attach a file, and share them with your friends.

time-tracking etc.

A Ruby day logger and time tracking program

time-tracking etc.