Freebiesbug - Collection of the best free web design resources.
UI HUT - 12,000+ exclusive design resources for Figma, Sketch & XD
Designer Mill - Collection of Best Free Design Resources
Interfacer - Collection of more than 200+ free design resources
Design Resources - A curated list of tools in one place to help designers
TOOOLS.design - A free and growing archive of 900+ design resources, weekly updated for the community.