XQuartz
- Provides MacOS users a way to run X Window applications.
Microsoft PowerPoint
- Create, edit, collaborate, and share presentations using PowerPoint for Mac.
Telephone
- VoIP program which allows you to make phone calls over the internet.
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.
Mac Informer
- Easily update apps from App Store and other sources.