Zazu

Zazu App is an open source launcher for hackers, creators, and others. It provides a set of features and automation tools that makes your life easier.

Zazu can quickly find applications deep inside your PC to launch them. You can also switch on your screen saver, lock your computer, and perform other operations.

Zazu is completely open source; so you can build your own plugins to extend its features. After creating a useful plugin, you can submit it to the plugins gallery. It provides a simple textbox calculator for performing common calculations and unit conversions.