Lotsa Helping Hands is a wonderful, free resource for caregivers. Their own description say it well:
Create a free of charge, private, web-based community to organize family, friends, neighbors, and colleagues – a family’s ‘circles of community’ — during times of need. Easily coordinate activities and manage volunteers with our intuitive group calendar. Communicate and share information using announcements, messages boards, and photos.
http://www.lotsahelpinghands.com/