What You Can Build With the App Shell 21 Block

• Install it with the ReUI registry command in the toolbar above, then swap the placeholder content, data wiring, and business logic for your own.
• Compare it across all eight ReUI styles and both the Base UI and Radix bases in the customizer before committing to one direction.
• Combine it with the other Shadcn Application App Shell blocks to assemble a full screen instead of a single section.

All Shadcn Application App Shell Blocks

The rest of this category, each on its own page with a live preview, the components it is built from, and the install command.

• App Shell 1 Collapsible icon-rail sidebar app shell with workspace switcher, nested nav, and user menu
• App Shell 2 Floating icon-collapsible sidebar shell with command-K search, nested nav, and workspace switcher
• App Shell 3 Inset sidebar app shell with per-project progress rings and a multi-type notifications popover
• App Shell 4 Mail inbox app shell with icon-rail folder sidebar, wide message list, and selected-message action header
• App Shell 5 Calendar app shell, icon-rail sidebar switching Calendar, Schedule, Contacts, Notifications panels
• App Shell 6 Dual Sidebar App Shell with Dark Nav Rail and Slide-In Calendar Context Panel
• App Shell 7 Breadcrumb-switcher sidebar app shell with org/app/environment dropdowns and a live system monitor popover
• App Shell 8 Inset icon-rail sidebar app shell with per-section secondary nav, org/app/env switchers, and notifications
• App Shell 9 Dark inset-sidebar team workspace shell with member presence rail and notifications feed
• App Shell 10 AI Agents App Shell with Collapsible Sidebar, Active-Project Rings, and Rich Notifications
• App Shell 11 Operations sidebar app shell with four toggleable regions and a resizable bottom workbench sheet
• App Shell 12 Icon-rail sidebar app shell with command-K search, notifications feed, apps grid, and theme menu
• App Shell 13 Community feed app shell with full-width header above a collapsible icon-rail sidebar
• App Shell 14 Mini icon-rail sidebar app shell with per-section secondary nav and a tabbed workspace toolbar
• App Shell 15 Dark full-width topbar app shell with workspace switcher, pinnable sidebar nav, and favorites
• App Shell 16 Dual sidebar app shell with icon rail and collapsible secondary navigation panel
• App Shell 17 AI chat assistant app shell with floating sidebar, model picker grid, and prompt composer
• App Shell 18 Task workspace app shell with collapsible floating sidebar and a toggleable AI chat assistant panel
• App Shell 19 Calendar app shell with inset sidebar date picker, up-next agenda, and Day/Week/Month view switcher
• App Shell 20 Mail client app shell with folder sidebar, split list and reading panes, and icon app rail
• App Shell 22 Photo banner app shell with crossfading hero images, pixel dissolve, glass icon rail and pill nav
• App Shell 23 Team and project switcher topbar app shell with indented sidebar route groups and a 3x3 apps menu
• App Shell 24 Inset notifications sheet app shell with route search palette and topbar section pills
• App Shell 25 Mission control app shell with icon rail, 4-tab missions panel and expandable robot event feeds
• App Shell 26 Security console app shell with icon scope tabs and a drag-to-reorder collapsible scope tree
• App Shell 27 Searchable route sidebar shell with a 48px icon rail fold and a Security, Assets, Events scope tree
• App Shell 28 Single rounded-panel app shell framing a grouped nav rail and body under top icon section tabs
• App Shell 29 Section tile rail shell with a 3x3 tile grid, workspace tabs and a status-badged robot network tree
• App Shell 30 Sidebar-free top nav app shell with an 8-tab segmented view track and a count-badge page header
• App Shell 31 Folder-tab workspace app shell with floating pill-group rail, color wash and assistant column

Related Shadcn Application Block Categories

• Auth (20) Login, register, forgot password, and two-factor authentication page layouts.
• Card (43) Card components for content display, data summaries, and interactive elements.
• Chart (47) Chart components and layouts with bar, line, pie, and area charts for data storytelling.
• Dashboard (8) Dashboard components and layouts that combine stats, charts, and tables into a complete overview screen.
• Dialog (14) Dialog components for modal windows, alerts, confirmations, and content overlays.
• Empty State (14) Empty state screens and no-data placeholders with recovery actions, onboarding prompts, and contextual guidance.

All Shadcn Block Groups

Browse the full ReUI Shadcn blocks library by product surface. Each group bundles category-level blocks you can mix and match across your project.

• Shadcn Application Blocks (344) Browse 344 Shadcn Application blocks across 24 categories.
• Shadcn Data Grid Blocks (39) Browse 39 Shadcn Data Grid blocks across 8 categories.
• Shadcn Solutions Blocks (74) Browse 74 Shadcn Solutions blocks across 10 categories.
• Shadcn eCommerce Blocks (87) Browse 87 Shadcn eCommerce blocks across 13 categories.
• Shadcn Marketing Blocks (67) Browse 67 Shadcn Marketing blocks across 8 categories.
• Shadcn AI & Agents Blocks (18) Browse 18 Shadcn AI & Agents blocks across 2 categories.