widget can

AVbeam for Mac can identify matching segments in multiple audio files

Best iPhone unlocker that can remove various locks from iOS devices.

A Pandora Music Converter that can download Pandora music into different formats

You can mirror Android and iOS screens to any PC with cast code, or USB cable.

A text editor that can edit multiple notes in parallel.

Desktop trash can with trash level indication.

Add a desktop trash can to OS X.

Force-empty your trash can.

Works out the chords to almost any tune you can sing.

Limit the time a user can be on the Mac each day.