Free Sketch UI Kit for Bootflat http://bootflat.github.io/
The Bootflat UI kit for Sketch 3 is a Sketch version of the Bootflat framework, which adds missing elements not included in the UI KIT PSD. It is recommended to place the .sketch file in a safe location and duplicate it when needed to create a custom layout.
The Bootflat UI kit for Sketch 3 is a valuable resource for designers using the Bootflat framework. It provides missing elements not included in the UI KIT PSD and allows customization of layouts using Sketch. With the ability to create symbols for every element in the future, this UI kit offers flexibility and convenience for designers. Support for the project can be provided through Gratipay, and bug reports can be sent to the developers.