Social networking platforms
Twitter is service is provided by Twitter Inc., a corporation based in San Francisco, California which has more than 25 offices around the world. It is an American microblogging and social networking service on which users post and interact with messages known as "tweets".
Registered users can post, like, and retweet, but unregistered users can only read those tweets that are publicly visible. Users interact with Twitter through browser, mobile frontend software or programmatically via its APIs.
Instagram is an American photo and video sharing social networking service founded by Kevin Systrom and Mike Krieger. In April 2012, Facebook Inc. acquired the service.
The app allows users to upload media that can be edited with filters and organized by hashtags and geographical tagging. Posts can be shared publicly or with pre-approved followers. Users can browse other users' content by tags and locations and view trending content. Users can like photos and follow other users to add their content to a personal feed.