For communication

• Starhub Digital Voice Home
• www.skype.com
• gizmo5.com

SG Maps

• gothere.sg
• www.map.gov.sg
  

Open source applications

Photo Editor

• www.picnik.com

Word processors, Spreadsheets & Presentations

• Google Docs
  
• www.openoffice.org

Operating System

• www.ubuntu.com

Virus, spyware and malware scanner

• housecall.trendmicro.com