SizzleSites also specializes in updating and maintaining existing sites and has performed contract development services for a number of companies including:

• Adrenalyn Motorcycles - Specialise in Imported Japanese road bikes, Polaris ATV's & Scooters
  
• Aviso Design Ltd - Specialists in brand development, strategy and identity
  
• Brian Head - Self hypnosis
  
• New Zealand Herald Online - New Zealand's largest newspaper online
  
• The Aucklander Online - The Aucklander weekly paper online
  
• Markon NZ Ltd - Specialists in design and manufacture of the spa bath components