Handsontable is a JavaScript data grid component designed to bring a spreadsheet-like experience into web applications, allowing users to interact with data in a familiar, Excel-style interface. It enables developers to build data-rich applications where users can enter, edit, validate, and process data from multiple sources such as databases, APIs, Excel files, Google Sheets, or manual input. It supports advanced editing capabilities, including inline editing, copy and paste with Excel-compatible clipboard, undo and redo actions, and keyboard navigation that mirrors common spreadsheet tools. It provides extensive functionality for managing data, such as sorting, filtering, grouping, moving, hiding, and freezing rows and columns, along with customizable cell types, validation rules, and conditional formatting. Handsontable includes over 400 spreadsheet formulas through its HyperFormula engine, as well as features like comments, autocomplete, dropdowns, and built-in editors.