Microsoft Office Excel
Diff Checker
Beyond Compare
Excel Compare
Excel Sheet Comparator
xlCompare
Xltrail
Find value, formula, worksheet, and hidden-content changes between two XLSX files. Files stay in your browser.

xlCompare
Diff Checker
Excel Compare
Compare2excel
Spreadsheet Compare
Microsoft Office Excel
Excel Sheet Comparator
Compare two Excel files and see every changed formula, value, sheet, and macro. Free in your browser, nothing uploaded. Add team review when you're ready.
Which is more popular?
Website, pricing, platforms and company facts side by side.
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WorkbookDiff
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| Website | workbookdiff.com | sheetdelta.com |
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In their own words, as submitted to SaaSHub.

WorkbookDiff is a free browser-local tool for comparing two coordinate-aligned .xlsx workbook versions up to 20 MiB each. It reports supported changes in stored values, formula expressions, worksheet presence and visibility, hidden rows and columns, and used-range changes. Findings can be...
A modern alternative to Microsoft Spreadsheet Compare, xltrail, Synkronizer, and DiffEngineX. SheetDelta compares Excel workbooks locally (nothing uploaded) and highlights every change: cell values, formulas (word-level), VBA macros, and structure. Works as a free browser tool, a free Excel...
What each product offers, as listed by its team.

An editorial look at what each product does well and who it suits.

No analysis of WorkbookDiff yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Compare Two XLSX Files Locally | WorkbookDiff Demo
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How often each product is chosen within a category, 0–100% relative to the other.

As answered by people managing WorkbookDiff and SheetDelta.
SheetDelta's answer:
SheetDelta is a modern, fast and most comprehensive tool when it comes to spotting, tracking and mitigating changes and risks in spreadsheets.
SheetDelta's answer:
SheetDelta uses Rust, Typescript and Elixir
SheetDelta's answer:
SheetDelta allows you to see exactly WHAT changed between edit to spreadsheets. Excel itself will only tell you that something has changed and it is for you to find out. We analyse your spreadsheets for common risks that could lead to miscalculations down the road.
SheetDelta's answer:
Anyone managing serious spreadsheets. If you base real business decisions on spreadsheets, this application is for you. It is very easy to make a mistake in Excel that goes by unnoticed. We help you catch these mistakes before they cost you money.
SheetDelta's answer:
We come from a software engineering background and were used to having first class testing, linting, comparision and automation support in software. Once we built more complex spreadsheets we quickly realised this does not exist in the Excel world and instead everyone relies on strict discipline to avoid these mistaken. So we set out to build SheetDelta, the tool we wanted ourselves.
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When comparing WorkbookDiff and SheetDelta, you can also consider the following products.

Microsoft Office Excel is a commercial spreadsheet application.
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Perform various operations with data on your worksheets in a seconds. xlCompare has a number of functions from Comparing, Merging and Updating records to Debuging Calculations in your workbook.
Compare xlCompare to WorkbookDiff or SheetDelta:

Diff Checker is a free online diff tool that quickly and easily gives you the text differences...
Compare Diff Checker to WorkbookDiff or SheetDelta:

Beyond Compare allows you to compare files and folders.
Compare Beyond Compare to WorkbookDiff or SheetDelta:

Excel Compare is a compare tool allows you to compare Excel files and Excel sheets
Compare Excel Compare to WorkbookDiff or SheetDelta:

Compare2Excel is a free online tool that lets you compare two Excel files side by side and instantly see every changed cell, added row, and removed row — highlighted in color, right in your browser.
Compare Compare2excel to WorkbookDiff or SheetDelta: