between

Hosts file manager, edit hosts files and switch between them.

Convert video between almost any formats including HD.

Shows the golden section between any two points on the screen.

Sync your keychain between all of your Apple devices.

Copy and paste data between iPhone apps and your Mac.

Share your mouse and keyboard between multiple computers.

Convert audio files between formats.

Easily switch between active windows.

Interface between a Behringer FCB 1010 and a MIDI device.

Sync your Address Book, Calendars, Tasks, Bookmarks between Macs.