StartupResources.io - Tightly curated lists of the best startup tools
Framer Inventory 3 for Sketch - Import states & export prototypes from Sketch to Framer
Startup Stash - A curated directory of 400 resources & tools for startups
Select Similar Layers - Sketch plugin to select layers with the same attributes
Happy Startup Canvas - A simple framework for building stuff that matters
Fluid for Sketch - Sketch plugin to make your responsive designs more efficient