ironcalc

    ironcalc/IronCalc

    Main engine of the IronCalc ecosystem

    frontend
    self-hosted
    react
    rust
    spreadsheet
    Rust
    Apache-2.0
    4.2K stars
    217 forks
    4.2K GitHub watchers
    Updated Nov 2, 2026
    View on GitHub

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    Where it stands

    Rank, growth pace and release cadence relative to everything GStars tracks.

    2 releases in the last 90 days, the latest 12 days ago, with 44 contributors on GitHub.

    Gained 5% more stars in the last 90 days than in the 90 days before.

    Use Cases & Benefits

    • Implements a modern, Rust-based spreadsheet engine with tools for reading and writing XLSX files.
    • Offers multi-language support and flexible deployment options including terminal, desktop, and web applications.
    • Use for integrating a high-performance spreadsheet engine into custom SaaS applications requiring spreadsheet functionality.
    • Use for building cross-platform spreadsheet tools leveraging Rust with bindings for Python, JavaScript, and other languages.
    • Use for developing self-hosted spreadsheet solutions with customizable user interfaces in React or native apps.

    Should you depend on it?

    License terms, project hygiene and risks, from GitHub metadata and GStars' snapshots.

    License

    Apache 2.0

    Permissive: commercial use, modification and redistribution are allowed with attribution; includes an explicit patent grant from contributors.

    Community files

    • README: present
    • Contributing guide: present
    • Code of conduct: present

    Watch-outs

    No watch-outs from GStars' checks.

    General guidance from repository metadata, not legal advice. How we score

    From the README

    IronCalc is a new, modern, work-in-progress spreadsheet engine and set of tools to work with spreadsheets in diverse settings.

    This repository contains the main engine and the xlsx reader and writer.

    Programmed in Rust, you will be able to use it from a variety of programming languages like Python, JavaScript (wasm), nodejs and possibly R, Julia or Go.

    We will build different skins: in the terminal, as a desktop application or use it in your own web application.

    head over to http://localhost:2080 to test the application.

    Excerpt from the ironcalc/IronCalc README on GitHub (Apache-2.0 license). © its authors.Read the full README on GitHub

    Daily snapshots

    Stars gained per day, and how forks and open issues moved, from GStars' daily snapshots

    Forks

    217+52

    Open issues

    318+105

    Compared with peers in Frontend

    Fastest-growing repositories GStars tracks in this cohort for the week of Nov 1, by 7-day star growth

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    ironcalc/IronCalc4.2K—6412 days ago
    Category median71.1K+2.4K45—

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