Sketch Confetti - Generate gorgeous confetti patterns in 1 click.
Bootstrap Zero - Open-source, free Bootstrap templates collection.
Frames for Sketch - Create awesome websites & apps using powerful design system
Bootstrap Magic - Create your Bootstrap 4.0 themes easily with magic
Matter - Create a feedback-focused culture in Slack with Matter!
Material Design for Bootstrap 4 - Powerful and free UI KIT for the newest Bootstrap 4 and Material Design