Performance

UI

• react-virtualized - React components for efficiently rendering large lists and tabular data.

UI Components

Editable data grid / spreadsheet

• AG Grid - Advanced Data Grid / Data Table supporting Javascript / React / AngularJS / Web Components.
• gigatables-react - Sorting, pagination/infinite scroll, global/column search, AJAX CRUD, and more.
• revo-grid - demo/docs - Powerfull Data Grid for React / AngularJS / Vue / Web Components with advanced customization.
• Handsontable - demo - docs - Data Grid with spreadsheet-like UI supporting React, Angular, TypeScript and JavaScript.

Photo / Image

• react-photo-album - demo - docs - Responsive React Photo Gallery.

Table

• ka-table - demo - Customizable table component with sorting, filtering, grouping, virtualization, editing etc.
• simple-table - demo - docs - Lightweight, fast and feature rich. Sorting/filtering, virtualization, tree data, nested headers, pinned columns, customized styling etc.

UI Frameworks

Responsive

• primereact - A complete UI Framework with 50+ components featuring material, bootstrap and custom themes.

UI Layout

Form Components

• muuri-react - demo - docs - Responsive, sortable, filterable and draggable grid layouts.
• react-stonecutter - Animated grid layout component.
• react-schematic - demo - Build responsive layouts using styled schematics without an overhead of any theme configuration
• react-grid-layout - A draggable and resizable grid layout with responsive breakpoints, for React.