Google Earth gives you a wealth of imagery and geographic information.
Google Earth Pro gives advanced business tools in addition to all the easy-to-use features and imagery of Google Earth.
Small utility that allows you to quickly typeset LaTeX equations, without bothering with file creation, preambles, and so on.
Professional designer tool for Mac.
Beacon Designer helps design successful SYBR Green, TaqMan, LNA spiked TaqMan...