UI Cloud - The largest user interface design database in the world
Sketch Repo - Collection of resources for anyone who uses Sketch
OpsDash - All-in-one solution for monitoring servers, services, uptime and databases. Curated Dashboards. Rule-based alerting.
AT-UI - UI library for developing powerful web interfaces
Qikipedia - Instant Wikipedia summary cards on any web page
Git Sketch Plugin - Version control for designers