Google Person Finder

http://latimesblogs.latimes.com/technology/2011/04/google-person-finder-started-after-haiti-hurrican-katrina-seen-advancement-in-japan-eartquake-tsunam.html

The Sound Processing Swiss Army Knife

sox.sourceforge.net

XKCD April fool's mods

xk3b: http://3d.xkcd.com/
unixkcd: http://uni.xkcd.com/

High performance computing on the cheap

Yet another attempt to reduce the cost of computing, this time with a cluster based on consumer GPUs: http://arstechnica.com/science/news/2011/03/high-performance-computing-on-gamer-pcs-part-1-hardware.ars/

Root, root, root for the

Root Android phones easily:

SuperOneClick: http://forum.xda-developers.com/showthread.php?t=803682

The Space Review

"Essays and Commentary About the Final Frontier"

http://thespacereview.com/

Juggling Quadrotors

http://gizmodo.com/#!5786711/quadrotor-drones-can-juggle-balls-with-each-other