Sketch App Sources
Sketch App Sources is the largest collection of icons, UI kits, wireframes, and free design resources for Sketch.
Sketch Repo
Sketch Repo is a great place to discover Sketch App resources for your next design project.
Mobile App Templates, Wireframes, Flowcharts for Sketch, Figma and XD — Design Files
Charts – Free Design System for Sketch
92 charts (for web and mobile), text and color styles, resizing constraints, organized nested symbols in 3 color schemes. Free for your personal and commercial projects