Interfacer - Collection of more than 200+ free design resources
Startup Stash - A curated directory of 400 resources & tools for startups
Facebook Design Resources - A collection of free resources made by designers at Facebook
Startup Buffer - Startup Buffer is a premium startup directory for emerging startups all around the world.
Freebiesbug - Collection of the best free web design resources.
Content Marketing Stack - A curated directory of content marketing resources