Guse

TreeGrid SpreadSheet provides cell based AJAX grid with spreadsheet features like editable formulas, many predefined and custom formula functions, individual cell styling and borders, manipulating individual cells or selected cell groups, auto grid size, auto row and column index. Dynamic cell styling - every cell can have set and changed style attributes: text color, background color, shadow color and style, font size and name, text bold, italic, underline, strike, overline and small caps. And also horizontal and vertical alignment, wrapping text vertically and text rotate 90 and 270 degrees. Dynamic cell span - every cell can be vertically and horizontally spanned through more next cells. Dynamic cell format - every cell can have set and changed its type and display format.

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.