Founded in 2004, Facebook’s mission is to make the world more open and connected. People use Facebook to stay connected with friends and family, to discover what’s going on in the world, and to share and express what matters to them.
Twitter is a global platform for public self-expression and conversation in real time. By developing a fundamentally new way for people to consume, create, distribute and discover content, Twitter enables any voice to echo around the world instantly and unfiltered. The service can be accessed at Twitter.com, on a variety of mobile devices, and via SMS. Available in more than 35 languages, Twitter has 316 million monthly active users.
Instagram is a fun and quirky way to share your life with friends through a series of pictures. Snap a photo with your mobile phone, then choose a filter to transform the image into a memory to keep around forever. They building Instagram to allow you to experience moments in your friends' lives through pictures as they happen. They imagine a world more connected through photos.