Chat Bootstrap designs, themes, templates and downloadable graphic elements on Dribbble
Bootstrap Chat App UI Codealong/Tutorial[ HTML, CSS, SCSS, Web Design, Development ] - YouTube
Doot - Bootstrap 5 Responsive Chat App Template
Chatflix - HTML Bootstrap 5 Chat Template by Realthemes | Codester
GitHub - mdbootstrap/bootstrap-chat: Responsive Chat built with Bootstrap 5. Many variants of the chat UI - mobile app, messages box, desktop widget and more.