IronCalc

Overview

IronCalc is a modern open‑source spreadsheet engine built in Rust that runs in your browser and aims to offer a lightweight, high‑performance alternative to traditional spreadsheet software. It supports hundreds of functions, Excel‑compatible import/export, formatting, styling, and aims to grow into a full featured spreadsheet platform with collaboration and desktop apps.

Key features

• Spreadsheet engine
• Web spreadsheet app
• Excel import/export
• Formula support
• Formatting & styles
• Multi‑sheet workbooks
• Keyboard navigation
• Internationalization
• Cross‑platform
• APIs for integration
• Open source