APIs & SDKs
The API-first spreadsheet platform for developers and teams who want Excel power, embedded in their own stack
Ahrefs Domain Rating set in type 6 Nov 2026, reset 4 Nov 2026.
An Excel-compatible spreadsheet engine that integrates into applications with 400+ functions, instant API integration, and client-side execution.
SheetXL is an API-first spreadsheet platform designed for developers who need Excel power embedded in their applications. It provides 400+ Excel-compatible functions, seamless imports, and copy-paste support, allowing existing spreadsheets to work directly. The platform offers instant integration through a single line of code and runs entirely client-side with no external calls or server processing.
Performance is optimized for speed, capable of autofilling over a million rows with formulas in 0.7 seconds. The platform supports realtime scripting to add custom functions directly in spreadsheets without build steps or reloads. SheetXL is MIT licensed and open source, allowing developers to fork, extend, or use it as-is without vendor lock-in.
Pricing model: Freemium
Community: Free for non-commercial use. Commercial: $745/dev/year for commercial use. Application Bundle: $4,495/app/year to deploy in one commercial application with 10 developer licenses. Start-ups and small businesses with fewer than 10 employees and less than USD 1M in funding or annual revenue
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Ahrefs Domain Rating set in type 6 Nov 2026, reset 4 Nov 2026. Majestic set 4 Nov 2026, reset 4 Nov 2026. Link data typeset by Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.
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Measured after SheetXL went live on Zivaro Launch on 4 November 2026.
Day 1 since launch. Next receipt: day 30, 4 Dec 2026. These are measurements, not proof of cause: many things move these numbers. Figures we have not measured are left out.
Free tips from Zivaro Launch for getting ready, launch day, the week after and what to do next.
SheetXL combines spreadsheet power with embeddability and a developer API. Unlike traditional data-grid components that lack cell-level flexibility or closed spreadsheet apps that cannot integrate, SheetXL provides Excel-class user experience alongside full embeddability and API access.
You can bring spreadsheet features to your application with just one line of code: SheetXL.attachStudio('#sheetxl') to get started instantly.
Yes, SheetXL is Excel compatible. Your existing spreadsheets just work, with support for 400+ functions, seamless imports, copy-paste support and 375+ shortcuts and UI gestures.
SheetXL runs 100% client-side with no external calls or server processing. Data never leaves your device and is fully self-contained.
Yes, you can add custom functions directly inside your spreadsheet using realtime scripting with no build steps or reloads required.
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