Fraud-detection system that scores a payment as risky or safe while it's happening — checking the device, behavior and identity behind it — instead of catching fraud only after the money's already gone.
sardine.ai
Alternatives to
Unit21
Best alternatives to Unit21 in 2026
Catching fraud or money laundering is only half the job at a bank or fintech — once something's flagged, a risk team still has to investigate it, decide what to do, and often file a formal report with a regulator, all within strict compliance timelines. Unit21 is built for that whole operational chain: it lets a risk team write their own detection rules without needing an engineer, then gives them the tools to investigate a flagged case and generate the regulatory filing, in one connected system rather than several disconnected tools. Unit21 combines AI agents for real-time fraud detection and automated investigation with a no-code rule builder, a unified device-risk score, transaction monitoring, payment and sanctions screening, case management, automated regulatory filing (SARs, STRs, CTRs), graph analysis for uncovering hidden relationships between entities, and access to a fraud-data consortium covering 80M+ US adults. It reports representing roughly 5% of all Suspicious Activity Reports (SARs) filed in the US, monitoring 4.5 billion events monthly across 200+ institutional customers.
Quick comparison of Unit21 alternatives
| # | Tool | Best for | Price |
|---|---|---|---|
| 1 | Banks | Fintechs | Payment processors | Merchants processing high-risk transactions | — | |
| 2 | Développeurs d'agents IA et organisations devant démontrer la gouvernance/conformité de leurs agents | — | |
| 3 | Développeurs indépendants et plateformes gérant du contenu généré par les utilisateurs | — | |
| 4 | Équipes de développement cherchant une correction automatique et fiable des failles de sécurité dans leurs PR | — | |
| 5 | Administrateurs systèmes Windows gérant l'accès SSH et souhaitant un audit des sessions | — | |
| 6 | Professionnels soucieux de confidentialité, conseillers financiers, fiscalistes, et toute personne devant caviarder des documents sensibles localement, sans les envoyer sur des services externes. | — | |
| 7 | Équipes d'ingénierie, auditeurs et entreprises se préparant à un audit de sécurité client | — | |
| 8 | Entreprises et organisations régulées européennes traitant des données clients sensibles, développeurs voulant garder les données personnelles hors du contexte des assistants IA | — | |
| 9 | Équipes sécurité et entreprises déployant des agents IA, serveurs MCP ou frameworks IA en production | — | |
| 10 | PME et organisations de secteurs réglementés (immobilier, santé, assurance, IT), freelances | — | |
| 11 | Équipes produit IA, startups construisant des systèmes IA à risque, entreprises en due diligence | — | |
| 12 | Équipes DevSecOps et ingénieurs sécurité voulant détecter et vérifier des secrets exposés | — |
#1
- ✓ Real-time fraud scoring during the transaction, across many payment rails
- ✓ Fraud-intelligence consortium creates a genuine cross-customer network effect
#2
An open specification and Python library for generating hardware-attested, tamper-evident records of what an AI agent actually did — for audits and compliance.
trace.agentrust-io.com
- ✓ Hardware-rooted proof (secure execution environment attestation), not just a software log
- ✓ Anchors to an independent transparency ledger (SCITT) for third-party verification
#3
An API that detects nudity and explicit content in images and videos in under 200ms, with tiered usage-based pricing.
tabushield.com
- ✓ Sub-200ms latency, clear published tiered pricing
- ✓ Auto-generated DSA compliance reports
#4
A tool that automatically opens pull requests with deterministic, proof-verified security patches instead of just flagging issues.
railo.dev
- ✓ Deterministic, proof-backed patches (AST + Z3) instead of LLM guesses
- ✓ Integrates directly into the pull-request workflow
#5
A free, passive tool that reconstructs SSH session activity — including commands — from Windows OpenSSH event logs.
github.com
- ✓ Reconstructs full session activity from Windows event logs, including commands
- ✓ Passive and read-only — never intercepts credentials
#6
A macOS application for permanent, local PDF redaction with automatic PII detection and batch processing, no cloud uploads.
github.com
- ✓ Permanently rasterizes redacted text instead of just visually covering it, so nothing hidden can be extracted.
- ✓ Fully local processing on macOS — no cloud uploads, no third-party servers involved.
#7
A free tool that scans your website from the outside — the way a hacker would — and hands you a letter grade plus plain-language fixes, instead of a dense technical report only a security specialist could read.
freedast.com
- ✓ Completely free with no scan limits
- ✓ Results in ~60 seconds with a clear A-F grade and plain-language guidance
#8
A gateway that sits between your app and AI models like GPT or Claude, strips out names, emails and other personal details before the data leaves Europe, and charges you only what the model provider charges — no markup.
noirdoc.de
- ✓ Masquage automatique et réversible des données personnelles avant envoi au modèle IA
- ✓ Aucune marge de plateforme, tarif fournisseur direct
#9
A free, open-source security scanner from Tencent that checks your AI infrastructure — agents, MCP servers, and frameworks — for known vulnerabilities and jailbreak weaknesses before an attacker does.
github.com
- ✓ Couvre infrastructure, agents, MCP et LLM en un outil
- ✓ Détecte 2000+ vulnérabilités connues
#10
An agreement management platform combining e-signature, identity verification (KYC) and payment collection, with a blockchain-anchored audit trail.
chaindoc.io
- ✓ Signature, KYC et paiement dans un seul flux
- ✓ Conformité eIDAS, ESIGN Act, UETA
#11
An AI-powered scanner that checks your product against 125+ regulatory frameworks (EU AI Act, GDPR, SOC2, CCPA, HIPAA...) and lists the gaps to fix.
aicomplianceadvisor.eu
- ✓ Couvre 125+ frameworks réglementaires
- ✓ Tarification fixe avec délai garanti
#12
A credential-scanning tool that searches Git repos, cloud storage and other sources for leaked secrets, then actively verifies each one against the real service so you know instantly which leaks are live.
github.com
- ✓ Vérification active des secrets contre le vrai service (pas juste une détection regex)
- ✓ Couvre 800+ types de secrets
FAQ about Unit21 alternatives
- What is the best alternative to Unit21 in 2026?
- Based on our selection, Sardine is the best alternative to Unit21 in 2026. Fraud-detection system that scores a payment as risky or safe while it's happening — checking the device, behavior and identity behind it — instead of catching fraud only after the money's already gone.. See our full ranking above to compare all options.
- Is Unit21 free?
- Unit21 is a paid tool. Several alternatives in our selection offer free or freemium versions.
- How many alternatives to Unit21 are there?
- mySelectas has listed 12 alternatives to Unit21 in the Security & Privacy category. Our selection is updated regularly to include the best options available.