BigXLDesktop
Big Files (50 GB+)⌘J Assistant (Local SLM)PII RedactionFeature ComparisonBlogPricing PlansSupport & FAQDownload Desktop App
7-day full feature trial · No credit card required

Fair, transparent pricing. Free opens it, paid fixes it.

Opening, sorting, charting, and CSV export never cost anything, at any file size. Upgrade to Pro or Enterprise when you need to clean data, query in plain English, or prove regulatory compliance.

14-day money-back guarantee100% offline air-gap guarantee3 free machine migrations per yearVolume bonus: 1 free seat per 10 seats

Free

Freeforever
no credit card, no account

Everything Excel does, on files Excel cannot open. No row limits, forever.

  • Open any file size (50 GB+ tested)
  • Zero row limits (past Excel's 1,048,576 wall)
  • Instant streaming index (<1 sec first view)
  • Sort, multi-filter, search & find
  • Spreadsheet cell edits & drag-fill
  • Summary stats, histograms & pivots
  • Ragged line recovery for messy exports
  • Fast CSV export
Download Free
Popular for Analysts & Engineers

Pro

$49/ year
per computer · annual key
Just $4.08 / month

Transform messy data, ask plain-English questions, and run DuckDB SQL offline.

  • All Free features included
  • Plain-English ⌘J Assistant (local SLM)
  • Read-only DuckDB SQL console
  • Cleaning transforms (dedupe, split, trim, case)
  • Reusable data cleaning recipes
  • Export Excel workbooks (auto-split at 1M rows)
  • Export charts as high-res PNG/SVG
  • Save & reopen .bigxl sessions
  • Join and merge multiple large CSVs
Download & Start 7-Day Trial
For Compliance & Security Teams

Enterprise

$99/ seat / year
per machine · volume batch file for IT
1 extra seat free for every 10 seats

Deterministic PII masking and verifiable export security for regulated data.

Team Seat Calculator+1 Free / 10 Seats
10 paid + 1 free = 11 seats for $990/yr (saves $99)
  • All Pro features included
  • Automatic PII detection (12 detectors)
  • Algorithmic verification (Luhn, mod-97, SSN)
  • Consistent cross-file pseudonymization
  • Zero-leak export barrier (guaranteed in query)
  • Org-wide mandatory redaction rules
  • Verifiable audit trail & change log
  • Bulk folder batch processing
  • One IT batch key file for all machines
Get Enterprise Quote

All paid tiers include full offline licensing with zero telemetry.View detailed feature checklist below ↓

Comprehensive Comparison

What each tier unlocks. Nothing hidden.

Every feature in BigXL is engineered to respect your machine and your data. Compare what is free forever versus what is unlocked with a paid key.

Core Spreadsheet Engine (Files That Break Excel)

Feature SpecificationFreePro ($49/yr)Enterprise
Open 10 GB+ files without RAM crashesMemory-capped disk-backed columnar streaming
Zero row limits (past Excel's 1,048,576 hard cap)Tested up to 50M+ rows with sub-millisecond scrolling
Sort, filter, find, and go to rowEvaluated over whole file, not just visible window
Edit cells, drag-fill, insert and delete rowsEdits stored in non-destructive memory overlay
Column summaries, distributions & chartsSmart suggestions based on column data type
Pivot table aggregationsRows × columns × measure with totals
Recover ragged & corrupted linesSkips bad rows and provides actionable reject report
Export clean CSVFull speed export of filtered or transformed data

Data Cleaning, DuckDB SQL & Local SLM

Feature SpecificationFreePro ($49/yr)Enterprise
Bulk cleaning (trim, re-case, dedupe, split columns)Applies to millions of rows in seconds
Plain-English ⌘J Assistant (runs 100% on-device)Trained DuckDB SQL fine-tune, zero network calls
Show working SQL query for every AI answerInspect, copy, and verify the query before applying
Read-only DuckDB SQL consoleSafe analytical queries against your current view
Save & replay automated recipesRecord once, apply cleanup to new CSV files
Export multi-sheet Excel (.xlsx) workbooksAutomatically splits at 1M rows with repeated headers
Save & reload .bigxl workspace sessionsPreserves entire branching history and column widths
Join and cross-tabulate two large CSVsShows match/miss counts before committing

Enterprise Compliance, PII Redaction & Security

Feature SpecificationFreePro ($49/yr)Enterprise
Automatic PII detection with 12 detectorsCards, emails, phones, SSN, IBAN, IPs, Aadhaar, names
Algorithmic validation (Luhn, mod-97, Verhoeff)Flags real personal data, avoids false positive numbers
Consistent pseudonym hashing across filesSame person gets same token to preserve joins
Zero-leak export prevention barrierMask applied at query layer; test-verified zero byte leakage
Corporate mandatory redaction policy defaultsColumns your company always requires masked
Verifiable audit record of all modificationsExport compliance proof of actions taken
Batch cleanup over entire directoriesAutomate processing of incoming monthly vendor dumps
Single IT batch key file deploymentDeploy 1 bundle to 50+ laptops without matching keys

Looking is free forever. Modifying data in bulk, asking questions, and export to Excel are Pro ($49/yr). Masking personal data deterministically and corporate compliance are Enterprise ($99/seat/yr).

Frequently Asked Questions

Common questions before you buy.

Clear answers about our offline machine keys, team volume discounts, hardware migrations, and trial terms.

How does the offline machine licence key work?

BigXL never communicates with a licence server—that is the strict offline guarantee the software is built upon. Each paid key is cryptographically signed against your computer's native hardware identifier (read in Settings → Licence). One key is one seat. When purchasing 10 or 50 seats, IT receives a single batch bundle file containing all keys that can be pushed to all machines at once.

How does the '1 extra seat free for every 10 seats' volume perk work?

When you purchase BigXL Enterprise, you automatically receive 1 bonus seat for every 10 seats ordered. For example: order 10 seats and receive 11 keys (saving $99); order 20 seats and receive 22 keys (saving $198); order 50 seats and receive 55 keys. The extra seats are generated directly into your batch file.

What happens if a computer breaks, dies, or is replaced?

A hardware replacement never costs you a licence. Each paid seat includes 3 instant, free machine key migrations per year through our self-service activation page. Enter the new machine's identifier, and a replacement key is minted immediately.

Can I try all features before purchasing?

Yes. BigXL includes a built-in 7-day trial of every single paid feature (Pro and Enterprise). The trial starts when you click 'Start my seven days' in Settings, not when you install, so you have plenty of time to test on your own largest and messiest files. No credit card is required.

What is the refund policy?

We offer a 14-day, no-questions-asked money-back guarantee. If BigXL doesn't handle your files or doesn't fit your workflow, email support@bigxl.app within 14 days of purchase or use the link in your receipt, and you will receive a full refund.

How are VAT, sales taxes, and invoices handled?

Payments are processed securely via Lemon Squeezy acting as Merchant of Record. They automatically calculate and remit sales tax and EU/UK VAT, and provide standard B2B tax receipts and invoices suitable for corporate expensing and procurement.

Is any data uploaded to cloud servers or third-party APIs?

Zero. BigXL has no network code. Files are read directly from your local drive. The DuckDB query engine runs locally, and the ⌘J language model runs completely on your CPU. We literally cannot see your files or query results.

Try BigXL on your own worst file today.

Open 10 GB+ CSV files without Excel crashing. 7-day full trial of every paid feature, no credit card required.