Brutalist Library

Overview and 0.2.0 availability of Proto UI’s contributor-authored Neo-Brutalist prototype library.

Brutalist is a Proto UI-maintained, contributor-authored Neo-Brutalist design-language projection built from square geometry, strong borders, flat color, hard offset shadows, and high-contrast typography. It is not a port, compatibility layer, or certified integration of any third-party component system.

The stable @proto.ui/prototypes-brutalist@0.2.0 package combines projections over existing Base families—Button, Toggle, Switch, Tabs, Hover Card, Dropdown Menu, Select, Dialog, Scroll Area, Separator, and Textarea—with direct styled-only Badge, Card, and Skeleton prototypes. Textarea is a visual-only projection over Base Textarea. This is the same reviewed surface admitted in rc.7, now published without surface expansion as part of the exact 40-package 0.2.0 ecosystem release.

Each card below shows one basic demo for quickly browsing the component range and visual language. API documentation and code examples remain on the individual component pages.

15 previewable prototypes Demos load as they approach the viewport

Hard shadows, strong borders, and high-contrast actions.

A passive, roleless high-contrast label with three semantic tones.

A passive four-part content grouping surface with hard-edged structure.

A square check surface with a hard shadow and high-contrast tick or mixed glyph.

A square toggle with an explicit pressed state.

A bold, direct boolean state switch.

Square tabs with vivid selected states.

A high-contrast mask and hard-edged task surface.

A strongly bordered value picker and options panel.

An explicit dividing line used as visual rhythm.

A high-contrast passive loading placeholder.

Visible track and thumb over native scrolling.

Native multiline editing with square geometry and a hard shadow.

Status

Provenance: contributor-authored Proto UI style family, with general Neo-Brutalist visual references only.
Semantics: Button, Toggle, Switch, Tabs, Hover Card, Dropdown Menu, Select, Dialog, Scroll Area, Separator, and Textarea project their corresponding Base protocols. Textarea adds only resize-y, square lavender/ink, hard-shadow styling. Badge and Card are direct passive styled-only prototypes with no Base counterparts. Skeleton is a direct styled-only, passive, contentless visual prototype; its parent owns loading, announcements, replacement timing, and focus continuity.
Release status: @proto.ui/prototypes-brutalist@0.2.0 is published under npm latest as part of the stable v0.2.0 release; rc.7 remains available only as historical prerelease evidence.
Lifecycle boundary: stable package publication does not promote every included prototype contract. Each catalog entity keeps its own active, draft, deprecated, or removed status; the individual pages and linked spec entities define the applicable guarantee.
0.2.0 package surface: root plus ./button, ./badge, ./card, ./toggle, ./switch, ./tabs, ./hover-card, ./dropdown, ./select, ./dialog, ./scroll-area, ./separator, ./skeleton, and ./textarea subpaths.
Maintenance: admitted to the 0.2 launch-commitment set; later semantic changes and long-term ownership remain subject to Proto UI governance.