VxeTable is a Vue 3 component library for building complex, enterprise-grade data tables and grids. It provides a comprehensive set of features including virtual scrolling for millions of rows, inline editing, Excel-style copy-paste, column resizing/dragging, filtering, sorting, pivot tables, tree/gannt views, and export/import/print. The library is architected as a set of Vue components (VxeTable, VxeGrid, VxeColumn, VxeToolbar, VxeColgroup) with an extensible plugin system based on hooks and renderers. It relies on a companion UI library (vxe-pc-ui) for modals, buttons, selects, and other controls, and uses xe-utils for utility functions. The codebase is large and well-organized, with separate modules for editing, filtering, keyboard navigation, validation, column customization, and export. Performance is a key focus, with virtual scrolling implemented for both X and Y axes. The library supports i18n with over 20 languages and includes a comprehensive theming system with light/dark modes. While primarily a UI component library, it also includes proxy-based server-side data operations in the VxeGrid component. The repository includes a demo application (examples/) for testing features, though the main artifact is the published npm package.
Multiple Select is a mature jQuery plugin that transforms native HTML `<select>` elements into feature-rich dropdowns with checkboxes, supporting single and multiple selection, optgroups, filtering, virtual scrolling for large datasets, localization, and full keyboard accessibility. The library is architecturally structured as a monolith jQuery-fn extension with a core class (`MultipleSelect.js`), separate utilities (`utils/index.js`), constants, virtual scroll implementation, and a Bootstrap 5 theme. It also provides Vue 2/3 wrappers (`src/vue/`) and is distributed as UMD modules via npm and CDN. The codebase demonstrates solid engineering practices: ES6+ modules, Rollup/Vite build system, comprehensive linting (ESLint, Stylelint, cspell), and a configurable options/events/methods API. While tightly coupled to jQuery, the utility functions and virtual scroll component are potentially reusable standalone. The plugin is actively maintained with recent releases and a responsive issue tracker.