SpreadJS

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.

WebDataRocks is a simple free JS library for creating functional and easy-to-use pivot tables. It can be used with Angular, Vue, React or any other framework. Free Flexible in customization JavaScript based client-side component Loads 1MB of JSON or CSV data files Full set of enterprise features Integration with 3rd party charting libraries Full set of enterprise features Features like filtering, sorting, grouping, conditional and number formatting, calculated values, totals are available for efficient work with your data. It supports printing or exporting web report to PDF, Excel or HTML with just one click. Ready-to-use modern UI The tool offers a classy spreadsheet-like interface optimized both for browsers and apps. All principles of reliability and excellent user experience are already implemented in this web reporting tool.