Spreadsheet

January 31, 2026

01:15

Spreadsheet

A lightweight, client-only spreadsheet web application. All data persists in the URL hash for instant sharing, No backend required. Optional AES-GCM password protection keeps shared links locked without a server

October 25, 2025

00:03

IronCalc — Open-Source Spreadsheet Engine (Rust)

High-performance spreadsheet calculation engine written in Rust. Supports 500+ Excel-compatible functions, XLSX import/export, Python bindings, WASM compilation, and self-hosted deployment. 4k stars, MIT/Apache 2.0 dual license.