Sketch

Sketch is a design tool for user interface and product design that helped define modern UI design workflows. Built as a fast, native macOS app, it focuses on vector design, reusable symbols and components, and design systems, with a large plugin ecosystem that lets designers extend it to their exact needs. For years it was the default UI design tool, and it remains a favorite of designers who prefer a native Mac experience over browser-based tools.

While the editor is Mac-native, Sketch has added a web app for real-time collaboration, sharing, developer handoff (inspecting specs and downloading assets), and commenting — so teams can work together and hand designs to developers even though non-Mac users can view and inspect in the browser. It supports prototyping, shared libraries for design systems, and versioning. Sketch's pricing is straightforward and per editor, with unlimited free viewers, plus a one-time Mac-only license for solo designers who do not need collaboration.

Sketch suits designers and design teams — especially Mac-based ones — who want a fast, native UI design tool with strong design-system and plugin support. Plans run Standard and Business (per editor), plus a one-time Mac-only license, so cost depends on team size and whether you need collaboration features.