Security
Avast!: https://www.avast.com/
SuperAntispyware: https://www.superantispyware.com/
Malwarebytes: https://www.malwarebytes.com/
Utilities
CCleaner: https://www.ccleaner.com/
Remote Control and Communications
Splashtop SOS: https://sos.splashtop.com
Data Backup and Storage
Carbonite: https://www.carbonite.com/
SyncBack: https://www.2brightsparks.com/freeware/index.html
Office Suite
LibreOffice: https://libreoffice.org
Applications
Moffsoft FreeCalc: http://www.moffsoft.com/freecalc.htm
Paint.NET: https://www.getpaint.net/
Mac Support and Repair
The MacGuys+: https://www.themacguys.com/