The year is now 2009, happy new year for starters.
However I'd like to hear your opinions on what applications helped you the most 2008. The requirements for the application is that it had a significant release or was brand new in 2008. For new releases to existing applications, please include a note about some significant changes this year.
Also, it could be a framework or whatever you like. So before downvoting this, see this as an information resource on what good applications, frameworks and other parts helped us programmers under the year 2008.