Google+, is an Internet-based social network owned and operated by Google. The network launched in June 2011 to challenge other social networks such as Facebook and Twitter and was designed to link Google's products like YouTube. Circles a core feature of the Google+ social network platform, enables users to organize people into groups or lists for sharing information. The Stream function allowed updates from those in their Circles. Google Hangouts is a free video conferencing feature, which allows up to 10 people to participate in a Hangout through the Google+ website or mobile app. On April 2, 2019, Google+ will be shut down for consumers. Google cited low user engagement and disclosed software design flaws that potentially allowed outside developers access to personal information of millions of users.