ArchitectUI - Modern dashboard template for bootstrap 4
UI Flow Cards - Construct web pages with ease, using cards
Flatlogic - Business Software: AI-Driven Solutions at Speed.
Wannathis - 3d illustrations and freebies
PlainAdmin - PlainAdmin is an Open-source freemium Bootstrap 5 based vanilla JS multipurpose admin template comes with - all essential dashboard components, pages, UI elements, charts, graphs, libraries and everything you may need for a data-rich backends.
The User Interview Exchange - Give a user interview, get a user interview - It's all free