Facebook is a popular free social networking website that allows registered users to create profiles, upload photos and video, send messages and keep in touch with friends, family and colleagues. www.facebook.com About Facebook
Instagram is a mobile, desktop, and internet-based photo-sharing application and service that allows users to share pictures and videos either publicly or privately.
MailChimp is a simple email marketing software (EMS) which gives you a number of easy options for designing, sending and saving templates of your emails. It can be used to send newsletters, flyers about programs and events, communicating with your members or a particular mailings list. Basic features are free.