head to head · open source
gridcraft vs IronCalc
gridcraft has 6,611 GitHub stars, 3,062 forks, 101 open issues and last shipped yesterday. IronCalc has 4,229 stars, 209 forks, 256 open issues and last shipped 2 days ago. gridcraft leads on adoption by 56% (6,611 vs 4,229 stars). gridcraft is written in Rust under Apache-2.0; IronCalc is written in Rust under Apache-2.0. gridcraft has attracted 46% as many forks as stars, IronCalc 5%. gridcraft was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| gridcraft | IronCalc | |
|---|---|---|
| GitHub stars | ★ 6.6K | ★ 4.2K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Rust | Rust |
| Last push | 2026-10-27 | 2026-10-26 |
| Forks | ⑂ 3.1K | ⑂ 209 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick gridcraft if
- You weight community size — 6.6K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Rust
- You value the larger contributor base for long-term maintenance
pick IronCalc if
- You want the IronCalc feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Rust
- You evaluated both and IronCalc fits your workflow better
About gridcraft
GridCraft Spreadsheets and data; an open source, clean room reimplementation of Microsoft Excel, rebuilt in pure Rust. A fast, open source, clean room take on the Excel workflow. It runs natively on macOS, Windows, Linux and BSD, and in the browser via WebAssembly. By the ArtCraft team. GridCraft on getartcraft.com · ArtCraft · All Crafting Apps Quarterly Sales Dashboard : a table with a totals row, conditional formatting, sparklines and two live charts — built entirely from GridCraft commands ( File → New → Sample ). [!NOTE] ArtCraft is a community of artists from all walks of life. Painters, photographers…
read the full gridcraft overview →
About IronCalc
IronCalc [![MIT licensed][mit badge]][mit url] [![Apache 2.0 licensed][apache badge]][apache url] [![Build Status][actions badge]][actions url] [![Code coverage][codecov badge]][codecov url] [![docs badge]][docs url] [![Discord chat][discord badge]][discord url] [mit badge]: [mit url]: [apache badge]: [apache url]: [codecov badge]: [codecov url]: [actions badge]: [actions url]: [docs url]: [docs badge]: [discord badge]: [discord url]: 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…
read the full IronCalc overview →
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Frequently asked questions
Is gridcraft or IronCalc more popular?
gridcraft has 6,611 GitHub stars and IronCalc has 4,229. gridcraft has the larger community by that measure.
Are gridcraft and IronCalc free?
Both are open source. gridcraft is licensed under Apache-2.0 and IronCalc under Apache-2.0. Neither carries a licence fee.
What is the difference between gridcraft and IronCalc ?
gridcraft is written in Rust and IronCalc in Rust. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, gridcraft or IronCalc ?
Choose gridcraft if you want the larger community (6,611 stars) or its Apache-2.0 licence terms. Choose IronCalc if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.