head to head · open source
gridcraft vs ZenConverter
gridcraft has 6,611 GitHub stars, 3,062 forks, 101 open issues and last shipped yesterday. ZenConverter has 1,782 stars, 64 forks, 3 open issues and last shipped 3 days ago. gridcraft leads on adoption by 271% (6,611 vs 1,782 stars). gridcraft is written in Rust under Apache-2.0; ZenConverter is written in Kotlin under AGPL-3.0. gridcraft has attracted 46% as many forks as stars, ZenConverter 4%. 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 | ZenConverter | |
|---|---|---|
| GitHub stars | ★ 6.6K | ★ 1.8K |
| License | Apache-2.0 | AGPL-3.0 |
| Written in | Rust | Kotlin |
| Last push | 2026-10-27 | 2026-10-25 |
| Forks | ⑂ 3.1K | ⑂ 64 |
| 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 ZenConverter if
- You want the ZenConverter feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches Kotlin
- You evaluated both and ZenConverter 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 ZenConverter
ZenConverter Private, local first file conversion for Android. English 中文 ZenConverter is a local file converter for Android. Pick a file on your phone, convert it on your phone, and keep it off someone else's server. The app is built with native Kotlin and Jetpack Compose. File access goes through Android's Storage Access Framework, and longer jobs run in a foreground service. The app deliberately stays narrow: supported routes are verified on a physical Android device, and their known limits are written down instead of hidden. Note: very large media files still need adequate free storage, memory, and power…
read the full ZenConverter overview →
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Frequently asked questions
Is gridcraft or ZenConverter more popular?
gridcraft has 6,611 GitHub stars and ZenConverter has 1,782. gridcraft has the larger community by that measure.
Are gridcraft and ZenConverter free?
Both are open source. gridcraft is licensed under Apache-2.0 and ZenConverter under AGPL-3.0. Neither carries a licence fee.
What is the difference between gridcraft and ZenConverter?
gridcraft is written in Rust and ZenConverter in Kotlin. 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 ZenConverter?
Choose gridcraft if you want the larger community (6,611 stars) or its Apache-2.0 licence terms. Choose ZenConverter if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.