ironcalc/IronCalc
Main engine of the IronCalc ecosystem observed · 2026-10-17
Health v2 · maintenance only
95/100
- Activity 100
- Release rhythm 99
- Longevity 76
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-10-21. Adoption (stars, forks) is never an input.
- gap_med: 30
- age_days: 1065
- days_rel: 5
- days_push: 4
- n_releases_24m: 12
Adoption not part of the score
4217 stars · 202 forks observed · 2026-10-17
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
IronCalc is an open-source spreadsheet engine written in Rust with xlsx import/export, usable headlessly or embedded via Rust, Python, JavaScript (WASM), and Node.js bindings. It also ships a self-hostable web spreadsheet application built on the engine.
Use cases
- generate xlsx reports programmatically
- embed a spreadsheet in a web app
- evaluate Excel formulas headlessly
- self-host an online spreadsheet
- read and write xlsx files from Rust or Python
- run spreadsheet calculations in the browser via WebAssembly
When to choose
- you need an Excel-compatible calculation engine with minimal dependencies
- you want to embed spreadsheet logic in a SaaS or internal tool
- you need xlsx import/export across multiple languages
- you want a self-hosted, open-source spreadsheet alternative
When to avoid
- you need full Excel feature parity - some features are still missing
- you need mature real-time collaboration today
- you need a battle-tested engine for critical legacy workbooks
Facets
library · maturity active
parser sdk developer-tools spreadsheets developer-tools web-development cross-platform rust python wasm browser cross-platform self-hosted spreadsheet-engine xlsx excel-compatible formula-evaluation react embeddable headless-calculation nodejs docker
7 sources
- readme: https://github.com/ironcalc/IronCalc · fetched 2026-10-17 · 618aad4a2fd8
- homepage: https://www.ironcalc.com · fetched 2026-08-29 · 3bb6a265a8c1
- site_page: https://www.ironcalc.com/about.html · fetched 2026-08-29 · e7edc4385d12
- site_page: https://docs.ironcalc.com/ · fetched 2026-08-29 · 8c0e9fb8251c
- site_page: https://docs.ironcalc.com/web-application/importing-files.html · fetched 2026-08-29 · 66166a7169b3
- site_page: https://docs.ironcalc.com/programming/about.html · fetched 2026-08-29 · 4bfd66860fa9
- registry_crates: https://crates.io/api/v1/crates/ironcalc · fetched 2026-08-29 · 3e2eac32e383
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| ironcalc/IronCalc | main | 95 |
For agents
markdown · JSON · MCP: product_card(name="ironcalc/IronCalc")
Data as of 2026-10-19T08:05:51.212177+00:00 · Report a problem