Sketch Repo - Collection of resources for anyone who uses Sketch
Source Wireframe Kit - Library of 537 blocks for desktop and mobile prototyping
Build with Sketch - Free LEGO-like kit for Sketch
Craftwork - A collection of User Interface resources made by Craftwork
Icon Slate - Icon Slate lets you easily compose, import and export desktop icons in many formats.
Streamline - Streamline is a web-based vacation rental software that manages vacation rental properties with flipkey integration, online booking, lead management, credit card processing, etc.