Capo lets you slow down your favorite songs so you can hear the notes and learn how they are played. With Capo, you can quickly tab out your songs atop a highly-detailed OpenCL-powered spectrogram display.

MonthlyCal is a beautiful and colorful monthly calendar widget for OS X Yosemite. MonthlyCal supports gregorian's calendar and it is almost localized in every language!
With the new version you can click on a day to show the list of related events. Click on an event to show it in OS X Calendar app!