Keychain Access
- Securely store all your passwords for websites and applications in a keychain.
Audio MIDI Setup
- Control settings for all audio going into and out of your Mac.
Grapher
- Graph equations and data sets, and visualise the results on your Mac.
Migration Assistant
- Simplifies the process of moving your information to another Mac.
Terminal
- OS X is built on an industry-standard UNIX foundation.
AirPort Utility
- Note: Most recent release available only within OS X 10.11 El Capitan update.
Time Machine
- Works with an external hard drive to automatically back up your entire Mac.
Messages
- iMessage lets you send messages to anyone on a Mac, or an iPhone, iPad, or iPod touch running iOS 5.
Dictionary
- Dictionary is an application included in Mac OS X.
PDFelement
- Wondershare PDFelement can help you convert any PDF (even one created from a scan) to any format, as well as allow you to edit, annotate, or sign it.
Safari
- Safari 5 is a web browser made by Apple for the Mac.