If you’re building a spreadsheet in the browser — not a data grid, but something with editable cells, formulas, and Excel round-trip — the shortlist of JavaScript libraries is short. Three names come up repeatedly: Luckysheet, x-spreadsheet, and ReoGrid Web. (For data grids — server-paged result sets, log viewers, admin tables — see our separate ReoGrid vs AG Grid vs Handsontable comparison; AG Grid is the better tool there.)
This is a comparison from the ReoGrid team. We’ll be fair about where the others shine.
TL;DR
| If you want… | Pick |
|---|---|
| The most features out of the box, MIT-licensed, and don’t mind a large DOM-based bundle | Luckysheet |
| Something tiny and hackable for a simple editable grid, and you’ll fill the gaps yourself | x-spreadsheet |
| High xlsx fidelity, canvas performance, a maintained library, and commercial support — with a free tier | ReoGrid Web |
The three at a glance
| ReoGrid Web | Luckysheet | x-spreadsheet | |
|---|---|---|---|
| Rendering | Canvas | DOM | Canvas |
| License | Lite free; Pro commercial | MIT | MIT |
| Frameworks | React, Vue, vanilla | vanilla (wrappers community) | vanilla |
| Formulas | Built-in engine (Pro) | Extensive | Basic |
| xlsx import/export | Both, high fidelity (Pro) | Import + export | Limited / via add-ons |
| Bundle size | Small (single canvas) | Large | Very small |
| Commercial support | Yes | Community only | Community only |
| Active maintenance | Yes | Slowed (see below) | Slowed |
(Feature sets and project activity change over time — verify the current state of each project before committing.)
Luckysheet — the most complete, but mind the maintenance
Luckysheet is the most feature-rich of the three: it looks and behaves a lot like Google Sheets, with a deep formula library, pivot tables, charts, data validation, and rich xlsx import/export. If you want to drop in a near-complete online spreadsheet and you’re MIT-only, it’s compelling.
Two caveats:
- It’s DOM-based and large. Rendering thousands of cells as DOM nodes costs memory and scroll performance compared to a single canvas. The bundle is heavy.
- Active development has slowed. The original team has shifted focus toward a newer, commercially-backed engine (Univer). Luckysheet still works, but if long-term upstream fixes matter to you, check the repository’s recent activity before you build on it.
Choose Luckysheet if: you need maximum features today, you’re fine with MIT-only and community support, and DOM performance at your data sizes is acceptable.
x-spreadsheet — tiny, canvas-based, bring-your-own-everything
x-spreadsheet is a lightweight, canvas-rendered spreadsheet in a very small package. Like ReoGrid it draws to a single canvas, so scrolling is smooth and the footprint is minimal. It’s a great starting point if you want to own your spreadsheet and don’t need much.
The trade-off is scope. Formula support is basic, xlsx fidelity is limited, and many features you’d expect (rich number formats, conditional formatting, robust merge/border round-trip) you’ll end up building yourself. Maintenance activity has also been light.
Choose x-spreadsheet if: you need a minimal editable grid, value a tiny dependency, and are happy to extend it yourself.
ReoGrid Web — maintained, canvas, xlsx-faithful, with a free tier
ReoGrid Web renders to a single <canvas> (so it stays smooth into the tens of thousands of rows — see how we hit 60fps) and treats Excel compatibility as a first-class goal: cell styles, merged cells, borders, number formats, conditional formatting, and images survive a loadXlsx → saveAsXlsx round-trip.
Where it differs from the two above:
- It’s a commercial product with a free tier.
@reogrid/liteis free (100 rows × 26 columns, arithmetic formulas).@reogrid/proremoves the limits and adds built-in functions, sort/filter, freeze panes, conditional formatting, and xlsx export. That funds active maintenance and commercial support — the thing OSS-only options can’t promise. - First-party React and Vue wrappers, plus a clean vanilla API that works anywhere (including Angular).
- xlsx fidelity is a headline feature, not an add-on.
The honest trade-off: Pro is paid. If your project is strictly MIT/open-source and can’t take a commercial dependency, Luckysheet or x-spreadsheet are the right call. If you want a maintained, supported, canvas-fast spreadsheet with serious Excel round-trip — and a free tier to start — that’s where ReoGrid Web fits.
How to decide
- Need it free and MIT, maximum features? → Luckysheet (check maintenance first).
- Need it tiny and you’ll extend it? → x-spreadsheet.
- Need xlsx fidelity, performance, maintenance, and support? → ReoGrid Web.
Try the live demos to see the canvas rendering and Excel round-trip yourself, or read the getting-started guide. To just view xlsx files in the browser, there’s a free online XLSX viewer.