There are 4 repositories under bootstrap-ui-kit topic.
Bootstrap 5 & Material Design UI KIT
Pixel UI Kit - Free and open source Bootstrap 5 UI Kit without jQuery
💾 Windows 95 UI Kit made with Bootstrap 4 components
Anchor is a free Bootstrap UI Kit with flexible, ready to use UI components which will hep you build websites faster.
Vvveb Admin Template
Electro Bootsrap 4 ecommerce template