Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
Backdrops - The only wallpapers you'll ever need. Say hello to Backdrops.
Invision - Prototyping and collaboration for design teams
Pitch Black Wallpaper - Pitch Black Wallpaper is an application, allowing you to set the pitch-black wallpaper to your smartphone or tablet.
Sketch - Professional digital design for Mac.
WallpapersCraft - HD & 4K wallpapers