Emojis and emoji-picker are by jasonpang, TimBest, gdeglin, MasterGroosha and Doshibu at OneSignal. Github repository: https://github.com/OneSignal/emoji-picker
Also youtube_search adapted from code from google at: https://developers.google.com/youtube/v3/docs/search/list#parameters
All user profile images are from google
Bootstrap was used for css styling and was acquired from:https://getbootstrap.com/