We conducted a systematic review of the effectiveness of networked ICT interventions in supporting carers of people with dementia. Five bibliographic databases were searched and a total of 1,456 abstracts were identified as potentially relevant. From these we identified 15 papers describing five interventions: ComputerLink, AlzOnline, Caring for Others and two studies from the REACH project (TLC and CTIS). The interventions reviewed were multifaceted with elements of networked peer support.