Sketch remains a staple of UI design thanks to its fast, Mac-native workflow and a long-running ecosystem built around symbols, libraries, and pixel-precise screen design. But the alternatives span very different philosophies: Figma leads with browser-based, real-time collaboration and large-scale design system tooling; Lunacy offers a Sketch-like desktop feel across Windows/macOS/Linux with strong offline value; UXPin pushes into code-backed components and stateful prototypes that behave closer to production; and tools like Justinmind and newer entrants like Absolute Design lean into interaction-heavy prototyping or design-to-code ambitions.
In evaluating Sketch alternatives, the biggest considerations were how well each tool supports collaboration and stakeholder feedback, cross-platform and offline reliability, design system scalability, ecosystem depth (plugins/assets), developer handoff realism (from inspect to code-connected components), performance on large files, pricing fit for teams vs solo users, and overall product maturity/governance for growing organizations.