Bluetooth File Exchange
- Makes it easy to share files between your Mac and Bluetooth-enabled devices.
Audio MIDI Setup
- Control settings for all audio going into and out of your Mac.
AirPort Utility
- Note: Most recent release available only within OS X 10.11 El Capitan update.
Activity Monitor
- Displays information about all the processes running on your Mac.
Adobe Photoshop CC 2015
- Photoshop CC 2015 is available as part of Adobe Creative Cloud for as little as $19.99/month (or $9.99/month if you're a previous Photoshop customer).