21st

21st is a canvas-style web app for designing, arranging, and collaborating on visual layouts and interactive prototypes in a browser-based workspace. It provides a flexible canvas, reusable components, and real-time collaboration tools so teams and individuals can create mockups, diagrams, wireframes, and simple interactive screens without installing desktop software.

The app’s core capabilities include a scalable infinite canvas for freeform layout and precise arrangement, a library of reusable components and templates to speed design iterations, and vector and raster drawing tools for common visual tasks. It supports layering, grouping, and alignment controls for accurate composition and export options that let you save assets and frames for handoff or presentation. The interface is built for browser use and adapts to different screen sizes to support work on laptops and large displays.

Collaboration features enable multiple users to work on the same canvas simultaneously, with visible cursors, commenting, and version history to track changes and restore previous states. Integrations with common workflows simplify asset import/export and connect designs to other tools used in product and content teams. The platform’s organization features—file and project structures, templates, and searchable element libraries—help teams maintain consistency across projects and speed up repetitive tasks.

Designed for product designers, UX writers, product managers, and cross-functional teams, 21st is suited to rapid prototyping, visual brainstorming, UX flows, and lightweight design documentation. Keywords relevant to discoverability include canvas design tool, web-based prototyping, collaborative design, interactive mockups, wireframing, reusable components, design collaboration, and real-time editing.

Technical and workflow-focused benefits:

• Browser-based canvas that eliminates the need for local installs and supports platform-independent access.
• Reusable components, templates, and export options to streamline handoff to developers and stakeholders.
• Real-time multi-user editing, comments, and version history for coordinated team workflows.
• Precision layout tools (alignment, snapping, grouping) alongside freeform drawing for both detailed mockups and quick concept sketches.
• Searchable libraries and project organization to scale design systems and speed repeated tasks.

The description above summarizes the app’s principal functions and practical benefits for teams seeking a browser-native canvas and collaboration workspace for design and prototyping.

This description was generated by AI (artificial intelligence). AI can make mistakes. Check important info.

Website: 21st.dev

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