Waze
My girls' HS is about 12 miles from our home. I thought I'd figured out about all the alternate/quickest routes over the last couple of years for those times when the line at Starbucks took longer than normal or the traffic has come to a standstill on one of the freeways.
I recently installed Waze and I'm very impressed. The last two days traffic has, for whatever reason, been insane. But, Waze really came through. Took me on some streets I didn't know existed or didn't know they connected to other streets. Very cool little app.
I know, I know, some of you have been using it forever. But, for those who aren't familiar with it and you find yourself stuck looking for alternate routes from time to time. It's worth a download.