Overview
Sketch is a vector graphics editor for macOS developed by the Dutch company Sketch B.V. (formerly named Bohemian Coding). It was first released on 7 September 2010 and won an Apple Design Award in 2012. It also has a web application that allows users to share files online.
It is primarily used for user interface and user experience design of websites and mobile apps and does not include print design features. Sketch has more recently added features for prototyping and collaboration. Being only available for macOS, third party software and handoff tools may be used to view Sketch designs on other platforms.
Overview
Sketch is used mainly for designing the UI and UX of mobile apps and web. The files designed in Sketch are saved in its own .sketch file format, though the files can also be opened in Adobe Illustrator, Adobe Photoshop, and other programs. The designs can also be exported to raster or vector formats such as PNG, JPG, SVG, and PDF. The designs created in Sketch are utilized by app engineers to design mobile apps and by website developers to convert designs into websites.
From Wikipedia (CC BY-SA 4.0).