Dashboard UI Kit - A modern & responsive dashboard UI kit for designers.
Bootstrap Magic - Create your Bootstrap 4.0 themes easily with magic
Drovp - A plugin based cross-platform desktop application that allows creating configured drop zones for any drag and drop operations.
Bootstrap 4 Cheat Sheet - An interactive Bootstrap 4 cheat sheet
Stream UI Kit - A beautiful open source Bootstrap 4 UI kit
HackerThemes - Bootstrap 4 themes and tools for web developers