Privacy-first data cleaning
Data Cleaning Tools Compared
Find the right tool for cleaning sensitive CSV data. Privacy, pricing, PII masking, and compliance, all in one comparison.
Feature comparison
Feature Comparison
| Feature | Mungr | Alteryx | OpenRefine | Trifacta | Excel / Power Query | Python (Pandas) |
|---|---|---|---|---|---|---|
| Price | Free – $49/mo | $5,200/yr | Free | $100+/mo | Included | Free |
| Data stays local | ✓ Always (browser WASM) | Desktop only | Localhost (Java) | ✗ Cloud upload required | Desktop only | Local script |
| Install required | ✓ No (browser) | Yes (Windows) | Yes (Java) | No (cloud) | Yes (Office) | Yes (Python) |
| PII masking built-in | ✓ Mask / redact / hash | Manual formula config | ✗ No | ✗ No | ✗ No | With custom code |
| Shareable recipes | ✓ Team-scoped | Workflow export | JSON export | Cloud sharing | Manual copy | Git repos |
| Max file size | 1 GB | Unlimited | ~1 GB | Unlimited | ~1M rows | RAM-limited |
| Learning curve | Low | High | Medium | Medium | Low | Very High |
| Collaboration | ✓ Team recipes | Enterprise | ✗ None | Cloud teams | Email / share | Git |
Privacy & compliance
Privacy and Compliance Comparison
| Aspect | Mungr | Alteryx | OpenRefine | Cloud Tools | Excel | Python |
|---|---|---|---|---|---|---|
| Where data is processed | User's browser (WASM) | User's desktop | User's localhost | ✗ Vendor's cloud servers | User's desktop | User's machine |
| Data uploaded to vendor? | ✓ Never | Never (desktop) | Never | ✗ Yes (always) | Never | Never |
| HIPAA compliant | ✓ By design (no BAA needed) | Needs enterprise config | By design (local) | Needs BAA | By design (local) | By design (local) |
| GDPR compliant | ✓ By design | Needs DPA | By design | Needs DPA | By design | By design |
| PII auto-detection | ✓ Column name + pattern | ✗ No (manual) | ✗ No | Varies | ✗ No | With libraries |
| Audit trail | ✓ Recipe history | Workflow log | Operation history | Cloud logs | ✗ None | Manual |
Cost
Total Cost of Ownership: 3-Year Comparison
Estimated costs for a team of 5 analysts over 3 years.
| Cost factor | Mungr Pro | Alteryx | OpenRefine | Trifacta | Python |
|---|---|---|---|---|---|
| License (3 years) | $5,220 | $78,000 | $0 | $18,000+ | $0 |
| Infrastructure | $0 (browser) | Desktop hardware | Desktop + Java | Cloud compute | Servers / laptops |
| Training | Minimal | Weeks of training | Self-taught | Moderate | Python courses |
| IT setup | Zero install | IT deployment | Java install + config | Cloud setup | Dev environment |
| Compliance overhead | Zero (built-in) | Enterprise config | Manual | BAA negotiation | Custom development |
| Estimated 3-year total | ~$5,220 | $85,000+ | $5,000+ (hidden) | $25,000+ | $15,000+ (dev time) |
The difference
What Makes Mungr Different
Architecture
Your data can't leave the browser. Not a policy, an architecture.
Not a policy toggle you have to trust. Your data physically cannot leave the browser because the WASM engine runs locally and no file-upload endpoints exist on our server.
One tool
Clean and protect in one tool
Most tools handle cleaning or privacy, rarely both. Mungr combines 19 data cleaning transforms with built-in PII masking (mask, redact, hash) in a single workflow.
Collaboration
Share recipes, not data
Collaborate without compromise. Save your cleaning steps as a recipe and share it with your team. The recipe contains only transformation logic. Zero data values travel with it.
FAQ
Frequently Asked Questions
Yes. The free tier includes 5 GB total usage, 3 recipes, and all 19 transforms. No credit card required.
OpenRefine is an excellent open-source tool, but it requires installing Java, runs on localhost, struggles with files over 1 GB, and has no team collaboration. Mungr runs in any browser with zero install, handles 1 GB files, and lets you share recipes with your team.
For data cleaning and PII masking, yes. Alteryx is a comprehensive analytics platform ($5,200/year) with features beyond cleaning. If your primary need is cleaning CSVs and protecting sensitive data, Mungr does this at a fraction of the cost with stronger privacy guarantees.
By design. Since no data ever leaves your browser, there is no PHI transmission, no server-side processing, and no need for a Business Associate Agreement (BAA).
Python offers unlimited flexibility but requires coding skills, environment setup, and manual PII handling. Mungr gives you the same DuckDB-powered SQL engine without writing code.
In your browser's WebAssembly sandbox. You can verify this yourself: open the Network tab while loading a file and you'll see zero outbound data requests during processing.
Ready to try the privacy-first way to clean data?
Start cleaning sensitive CSV files in your browser. No uploads, no installs, no risk.