Display and edit millions of rows with instant response. Plan, analyze and work with data directly in your browser. CSP-ready. Excel-like. No pagination. Unlimited end users.

FastGRID.AI3.1

Ultra-Fast JavaScript Tree Grid with AI for Big Data

FastGrid million rows example screenshot

A next-generation JavaScript data grid built for extreme performance. Handles millions of rows and hundreds of thousands of columns with smooth, virtual scrolling and no pagination. Designed for enterprise dashboards, analytics tools and large datasets.

Primary capabilities:

High-performance grid for large-scaled data

Virtual scrolling with zero blanking or scroll gaps

Instant sorting, filtering and cell editing

Integrated AI to control the grid

Ideal for replacing slow HTML tables or legacy grids

More about FastGrid

FastSHEET.AI3.1

Excel-Like JavaScript Spreadsheet with AI

A high-performance excel-like JavaScript spreadsheet built on top of FastGrid. Combines cell-based editing, formulas, autofill and formatting with the speed required to process millions of rows. Can use AI to analyze and control the spreadsheet data and to generate data from any Internet sources.

Built for:

Financial models

BI tools

Complex calculations in the browser

Data analyzes by AI

Data generating by AI from any sources

More about FastSheet

GanttCHART18.0

JavaScript Gantt Chart for Project Planning

A complete JavaScript Gantt chart component for task planning, dependencies, milestones and resources. A browser-based alternative to Microsoft Project or Oracle Primavera.

Features:

Dependencies & critical path

Resource assignments

Editable timeline & drag-drop

Large project support

More about GanttChart

TreeGRID18.0

Enterprise JavaScript Data Grid & Tree Grid

A powerful JavaScript data grid and tree grid component for displaying, editing and managing both tabular and hierarchical data. Supports advanced editing, business logic, and visual customization for complex enterprise systems. More about TreeGrid

SpreadSHEET18.0

Open, Edit & Save XLSX Files Directly in the Browser

A web-based JavaScript spreadsheet that lets users open, edit and save XLSX files with no server-side processing. Ideal for secure environments thanks to full Content Security Policy (CSP) compliance. More about SpreadSheet

References

Trusted by thousands of developers and enterprise teams worldwide.

All References

News

2026-06-17 TreeGrid major version 18.0 released Restyled and updated for modern look and added four new CSS styles. 2026-06-17 FastGrid minor version 3.1 released Added two new styles and new set of icons. Added support for React.StrictMode. 2026-04-22 FastGrid major version 3.0 released Fully integrated OpenAI ChatGPT to analyze, control and create data in FastGrid and FastSheet. 2025-12-10 New web site released Our web has been completely re-styled and updated. 2025-06-12 New product FastGrid version 1.0 released. FastGrid is new grid & sheet widget that can display millions of rows and / or hundred thousand of columns without any paging, delays, blinking, empty spaces or scroll gap. The grid has very fast response regardless on the displayed row count. FastGrid consists of FastGrid (similar to TreeGrid Grid) and FastSheet (similar to TreeGrid Sheet) components. FastGrid is completely independent on TreeGrid, the products do not share any their part. FastGrid is not any successor of TreeGrid, the products differ in their features and usage purposes. Both the products will be maintained, developed and extended in future. FastGrid and TreeGrid are not compatible, their data format, settings and API remarkably differ. Compare FastGrid with TreeGrid. See detailed news

Why FastGrid & TreeGrid

Extreme Performance

Optimized JavaScript rendering ensures smooth interaction even with millions of rows and complex structures.

Excel & Project Functionality in the Browser

One suite that covers grid, tree, spreadsheet, Gantt and chart components.

Full Security & CSP Compatibility

Works in Salesforce LWC, shadow DOM and strict CSP environments - no unsafe-inline required.

All Components, One Vendor

Unified licensing, consistent API, shared logic. No runtime fees. Unlimited end-user deployments.

Integrated AI

Grid and sheet can be fully controlled and analyzed by through OpenAI ChatGPT. Dedicated API for AI.

Fully extensible

Full JavaScript API with properties, methods and events.

Live Examples

FastGrid million rows with AI

Demonstration of a very large FastGrid (up to 3,000,000 rows) with features like column sets, tree, sorting, grouping, filtering, searching, calculations, resizing and moving columns, row dragging, adding, deleting, copying, selecting, fixed rows and columns, cell types and formats, calendar, printing, export to PDF and to MS Excel.

Show live example

TreeGrid universal example

Demonstration of many TreeGrid features like tree, sorting, grouping, filtering, searching, calculations, resizing and moving columns, row dragging, adding, deleting, copying, selecting, fixed rows and columns, many cell types, formatting values, popup default list, calendar, printing, export to PDF, export to MS Excel.

Show live example

FastGrid large pivot with AI

Demonstration of a large grid up to 2,000,000 rows showing pivot grid creation with features like sorting, grouping, filtering, searching, calculations, resizing and moving columns, row dragging, adding, deleting, copying, selecting, fixed rows and columns, sticky rows, cell types and formats, printing, export to PDF and to MS Excel.

Show live example

Gantt chart & Network diagram

Demonstration of TreeGrid application showing interactive Gantt chart (task schedule, resources, dependencies) and network diagram with descriptions and dependencies, including printing and export to PDF.

Show live example

FastGrid Excel example with AI

Demonstration of a cell-based spreadsheet program showing editable formulas with suggestions, row and column index, auto adding new rows and columns on scroll, editable cell style, dynamic and automatic cell format and type, copy & paste values and styles and auto fill values and styles.

Show live example

Universal interactive bar chart

Demonstration of interactive bar chart with different sizes, style, shape, icons, color, HTML content, tooltip and features. Shows creating, deleting, moving, copying, selecting and changing boxes with dependency lines.

Show live example

More examples

FastGrid & TreeGrid

High-Performance JavaScript Components for Enterprise Applications

Display and edit millions of rows with instant response. Plan, analyze and work with data directly in your browser. CSP-ready. Excel-like. No pagination. Unlimited end users.

FastGRID.AI3.1

Ultra-Fast JavaScript Tree Grid with AI for Big Data

Primary capabilities:

High-performance grid for large-scaled data

Virtual scrolling with zero blanking or scroll gaps

Instant sorting, filtering and cell editing

Integrated AI to control the grid

Ideal for replacing slow HTML tables or legacy grids

FastSHEET.AI3.1

Excel-Like JavaScript Spreadsheet with AI

Built for:

Financial models

BI tools

Complex calculations in the browser

Data analyzes by AI

Data generating by AI from any sources

GanttCHART18.0

JavaScript Gantt Chart for Project Planning

Features:

Dependencies & critical path

Resource assignments

Editable timeline & drag-drop

Large project support

TreeGRID18.0

Enterprise JavaScript Data Grid & Tree Grid

SpreadSHEET18.0

Open, Edit & Save XLSX Files Directly in the Browser

References

Trusted by thousands of developers and enterprise teams worldwide.

News

Why FastGrid & TreeGrid

Extreme Performance

Excel & Project Functionality in the Browser

Full Security & CSP Compatibility

All Components, One Vendor

Integrated AI

Fully extensible

Live Examples

FastGrid million rows with AI

TreeGrid universal example

FastGrid large pivot with AI

Gantt chart & Network diagram

Demonstration of TreeGrid application showing interactive Gantt chart (task schedule, resources, dependencies) and network diagram with descriptions and dependencies, including printing and export to PDF.

FastGrid Excel example with AI

Demonstration of a cell-based spreadsheet program showing editable formulas with suggestions, row and column index, auto adding new rows and columns on scroll, editable cell style, dynamic and automatic cell format and type, copy & paste values and styles and auto fill values and styles.

Universal interactive bar chart

Demonstration of interactive bar chart with different sizes, style, shape, icons, color, HTML content, tooltip and features. Shows creating, deleting, moving, copying, selecting and changing boxes with dependency lines.

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