Comparison

Why Choose anonym.legal?

We compared the top anonymization tools across features, pricing, ease of use, and compliance coverage. Here's what sets anonym.legal apart.

Open-source

Production-ready

Setup Time
30-80 hours (custom recognizers, NLP models, Docker, testing)
Entity Types
~100 built-in (requires extension)
Languages
12-15 (limited spaCy support)
Cost
Free (self-hosted) or $30-100K/yr (managed services)
Support
Community (GitHub issues, Stack Overflow)
Setup Time
✓ 5 minutes (web signup or cloud URL)
Entity Types
✓ 285+ (all platforms, no config needed)
Languages
✓ 48 languages (spaCy + Stanza + XLM-RoBERTa)
Cost
✓ $0-29/mo (free tier: 200 tokens)
Support
✓ Priority support (email, chat, docs)

Bottom line: Presidio is powerful for engineers who want to build their own solution. anonym.legal is built for organizations that need it working today.

Try anonym.legal Free

Browser DLP (new 2026)

7 Platforms

Pricing
$15/user/month (minimum 5 users = $900/yr)
Approach
Blocking (prevents data send)
Platforms
Browser (Chrome, Edge, Firefox, Safari) + SaaS
Entity Types
~50 (limited, enterprise only)
Languages
EN (English only)
Pricing
✓ $0-29/mo (pay-per-token, or free)
Approach
✓ Anonymizing (keeps, cleans data)
Platforms
✓ 7 Platforms (Web, Desktop, Office, Chrome, API, MCP, LibreOffice)
Entity Types
✓ 285+ (all tiers)
Languages
✓ 48 languages (multilingual NLP)

Key difference: Nightfall blocks data from being sent (prevents mistakes). anonym.legal anonymizes it (enables sharing). Use together: Nightfall blocks risky sends, anonym.legal cleans approved data.

Read: Blocking vs Anonymizing

Cloud-native

Cloud + Local

Pricing
$1/GB scanned + GCP infrastructure costs
Lock-in
GCP-only (requires Google Cloud Platform)
Entity Types
~200 (but limited to GCP data types)
Platforms
GCP BigQuery, Storage, Dataflow
Offline
✗ (cloud-only)
Pricing
✓ $0-29/mo (flat-rate tokens, no per-GB)
Lock-in
✓ Zero lock-in (portable, offline-first)
Entity Types
✓ 285+ (real-world, standard types)
Platforms
✓ 7 Platforms (anywhere, any cloud)
Offline
✓ Desktop, Office, LibreOffice offline

Bottom line: Google DLP is powerful for data warehouse teams locked into GCP. anonym.legal is vendor-agnostic and costs predictably (no surprise $10K/mo bills for large scans).

Try Free (No GCP Required)

Enterprise SaaS

SMB-to-Enterprise

Pricing
~$46K/year (enterprise negotiated)
Entity Types
50+ (limited scope)
Free Tier
✗ (no free option)
Platforms
API, managed service
Setup
Sales call → negotiation → contract
Pricing
✓ $0-29/mo (linear scaling, no negotiations)
Entity Types
✓ 285+ (all tiers from day 1)
Free Tier
✓ 200 tokens/month (no credit card)
Platforms
✓ 7 Platforms (everywhere)
Setup
✓ 5 minutes (sign up, paste data)

Bottom line: Private AI targets enterprise. anonym.legal targets SMBs, startups, and self-serve users. Start free, scale as you grow.

See Transparent Pricing

Human redaction

Automated

Cost/Document
$5-50 (human time) + errors (40-60% miss rate)
Scalability
✗ (linear scaling with team size)
Consistency
✗ (human error, bias, fatigue)
Non-English
✗ (requires multilingual staff)
Audit Trail
✗ (hard to track who redacted what)
Cost/Document
✓ $0.001-0.01 (tokens, human review optional)
Scalability
✓ Linear (1K docs = 1M docs, same cost)
Consistency
✓ 98%+ (deterministic rules, no bias)
Non-English
✓ 48 languages (automatic)
Audit Trail
✓ Full encrypted logs

Real-world math: 1,000 FOIA documents at $10/doc (manual) = $10,000. Same documents on anonym.legal @ $0.002/doc = $2. Plus, anonym.legal catches 98% of PII vs. 40-60% for human redaction. Use anonym.legal for first pass, then human review.

FOIA Automation

Yes. The anonym.legal Chrome Extension automatically detects and anonymizes PII before it reaches ChatGPT, Claude, Gemini, Copilot, or any AI tool. Your original data never leaves your browser.

Data masking replaces sensitive values with realistic-looking substitutes (e.g., replacing a real name with a fake name). Data anonymization is broader — it includes masking, redaction, hashing, encryption, and custom methods. anonym.legal supports all 6 methods.

Yes. Upload PDF, Word, Excel, or text files for batch anonymization. The platform processes 5,000+ documents per batch with full audit trail. OCR support detects PII in scanned documents.

48 languages with native NLP models: 24 spaCy models, 6 Stanza models, and 18 Transformer models. Each language has region-specific entity detection (e.g., Steuer-ID for German, NIR for French, Codice Fiscale for Italian).

Yes. The REST API and MCP Server allow you to anonymize PII in your data pipeline with 3 lines of code. Sub-200ms latency. Python and Node.js SDKs available. Bearer token authentication.

The EU AI Act (full applicability August 2, 2026) requires GPAI providers to document training data handling. Anonymizing PII before AI training ensures Article 10 compliance. anonym.legal provides audit evidence for each anonymization.

Complete Feature Matrix

Feature anonym.legal Presidio Nightfall Google DLP Private AI
Entity Types 285+ ~100 ~50 ~200 50+
Languages 48 12-15 1 (EN) Limited Limited
Platforms 7 API only Browser + SaaS GCP only API only
Free Tier ✓ ✓ (self-host) ✗ ✗ ✗
Offline ✓ ✓ (self-host) ✗ ✗ ✗
Pricing Model Tokens ($0-29/mo) Free / $30-100K $15/user/mo $1/GB ~$46K/yr
Setup Time 5 min 30-80 hrs 30 min 1-2 hrs Sales cycle
6 Anonymization Methods ✓ ✓ (config) ✗ ✗ ✗
Batch Processing ✓ ✓ ✗ ✓ ✓
Key Vault ✓ BIP39 ✗ ✓ ✗ ✓

Choose Based on Your Needs

You Need It Working Today

Use: anonym.legal

5-minute setup. All features included. No engineers needed. Start free, upgrade as you grow.

Try Free

You're an Engineer Building Custom

Use: Presidio (open-source) or anonym.legal API

Presidio for total control + time investment. anonym.legal API for SaaS convenience + zero ops.

API Docs

You Need to Stop Data Leaks to AI

Use: anonym.legal Chrome Extension + Nightfall (complementary)

anonym.legal anonymizes data; Nightfall blocks risky sends. Use together for defense-in-depth.

Install Extension

You're Enterprise with GCP

Use: Google DLP (native) + anonym.legal (multi-cloud)

Google DLP is native to GCP. Use anonym.legal for non-GCP workloads or offline processing.

Desktop App

You Have Millions of FOIA Requests

Use: anonym.legal Batch Processing

Redact 1M+ documents for $2K instead of $10M. 98% accuracy. Full audit trail.

Batch Processing

You Need Air-Gapped Security

Use: anonym.legal Desktop App (offline)

Full processing without cloud. Local storage. BIP39 vault for keys. Zero data leaves your network.

Download Desktop

See It In Action

Watch how anonym.legal detects and anonymizes PII in real time

Try anonym.legal Free Today

All 6 methods, all 48 languages, all 7 platforms. 200 tokens/month. No credit card required.

Open Anonymizer

Also from anonym.legal

EU GDPR Compliance Hub → Legal Document Redaction → Enterprise DLP → Developer API & MCP →

Frequently Asked Questions

Nightfall blocks data — anonym.legal anonymizes it. Nightfall requires MDM/admin deployment; anonym.legal works as a user-installable Chrome Extension. Nightfall is English-only with ~50 entities; anonym.legal supports 48 languages and 285+ entities. Nightfall costs $15/user/month; anonym.legal starts free.

anonym.legal is built on Presidio but adds 7 platforms, 48 languages (vs Presidio's 7), zero-knowledge encryption, a web UI, batch processing, and 108 compliance presets. Presidio setup requires 40-80 hours; anonym.legal works in 30 seconds.

Google DLP detects ~200 entity types but costs $1-3/GB, requires GCP, and is English-focused. anonym.legal detects 285+ types across 48 languages, runs on 7 platforms (not just cloud), and starts free. Google DLP has no encryption/decryption workflow.

CaseGuard is Windows-only desktop software ($99-329/month) focused on video/audio redaction. Redactable is cloud-only PDF redaction ($19/month) in English only. anonym.legal covers 7 platforms, 48 languages, and handles text, documents, images, and structured data.