AI security tools with a free plan

Figure and bar: visits/mo, estimate · year: online since

1. #1C

   CloudflareMCP · open

   Proxies website traffic through a global network for CDN caching, DNS, DDoS protection and a web firewall, plus Workers serverless code and zero-trust access.

   4.9M
   Active
   From $20/mo
   2009
2. #2L

   Lumo by Proton

   Provides encrypted email, calendar, cloud storage, password manager and VPN under one Proton account, with the Lumo chat assistant as an add-on.

   3.4M
   Active
   Free plan
   2014
3. #3B

   Brave

   Browser that blocks ads and trackers, encrypts connections with built-in VPN, and includes private search.

   1.4M
   Active
   From $3/mo
   2015
4. #8S

   Scamwise

   Analyzes suspicious messages, emails, links, and images to detect scam signals and provide verdicts.

   130k
   Active
   Free
5. #9K

   Kentik AI

   Collects network traffic data and detects anomalies like DDoS attacks and cost inefficiencies across cloud and on-premises infrastructure.

   114k
   Active
   From $2,000/mo
6. #13S

   Sonar

   Analyzes source code statically in IDEs, CI pipelines and pull requests, reporting bugs, code smells, vulnerabilities and coverage against quality gates.

   72.4k
   Active
   From $34/mo
   2007
7. #15S

   SonatypeMCP · sign-in

   Hosts artifact repositories and scans open source dependencies, blocking malicious or vulnerable components before they enter builds.

   69.4k
   Active
   From $1,200/yr
   2008
8. #18S

   Snyk

   Scans source code, open source dependencies, container images and infrastructure-as-code for vulnerabilities, and suggests fixes in the IDE, CLI and pull requests.

   63.1k
   Active
   From $25/mo
   2015
9. #20T

   Temp Mail

   Generates disposable email addresses to receive verification codes and sign-ups without exposing your primary inbox.

   45.3k
   Active
   From $3.99/mo
10. #24F

    FusionAuthMCP · open

    Hosts login, single sign-on, multi-factor and passwordless authentication, plus user management and role-based access, self-hosted or on FusionAuth's cloud.

    42.2k
    Active
    From $162/mo
11. #26F

    FootprintIQ

    Scans 500 public platforms to reveal usernames, email breaches, data broker listings, and exposure risks.

    35.5k
    Active
    From ≈ $17/mo
    2025
12. #28B

    BlockSurvey

    Builds encrypted surveys and forms, including conversational ones, and analyzes responses for themes and sentiment, with HIPAA and GDPR options.

    29.6k
    Active
    From $49/mo
    2019
13. #30I

    iSpyConnectMCP · sign-in

    Records and analyses IP and USB camera feeds on your own machine, flagging motion and objects and sending alerts.

    24.3k
    Active
    From $7.95/mo
    2007
14. #31S

    Stytch AI

    Provides authentication, authorization and fraud detection APIs and SDKs for web apps, mobile apps and AI agents.

    23k
    Active
    Free plan
15. #32T

    TruthScanMCP · sign-in

    Detects AI-generated and manipulated images and PDFs in real time via API to prevent fraud in claims, returns, and document verification.

    20.3k
    Active
    From $24/mo
16. #33A

    AZAPI.ai

    Extracts text and fields from documents and ID cards, verifies identity documents and solves CAPTCHAs through REST APIs.

    16.5k
    Active
    Free plan
17. #34B

    BigID

    Discovers and classifies sensitive data across enterprise systems, applies security controls, and manages AI governance risks.

    14.6k
    Free plan
    2016
18. #37D

    Deep SearchMCP · open

    Searches public sources to find and verify people by name, phone, email, or photo with source links.

    11.1k
    Active
    Free plan
19. #38T

    Tines

    Builds automation workflows from drag-and-drop actions, HTTP requests and LLM steps, mainly for security and IT operations such as alert triage.

    10.8k
    Active
    Free plan
    2018
20. #42I

    IsThisSpam

    Analyzes emails, texts, and websites to detect phishing, scams, and malicious content with instant verdicts.

    6.8k
    Active
    From ≈ $3.51/mo
21. #43F

    Facia

    Verifies identities with face matching and liveness checks and detects deepfakes in images and video calls through an API and SDKs.

    6.8k
    Active
    From $0.10 per use
    2022
22. #46M

    Modulate

    Analyzes live voice conversations to flag toxicity, fraud, deepfake voices and compliance breaches, for game voice chat and contact centers.

    6.2k
    Active
    From $0.01 per use
23. #49S

    Strike Graph AI

    Runs security compliance programs for SOC 2, ISO 27001 and other frameworks, collecting control evidence from connected systems for audits.

    5.6k
    Active
    From $10,000/yr
    2020
24. #52F

    Fluid Attacks

    Scans applications for vulnerabilities with automated tools and human penetration testing, ranks findings by exploitability and tracks their remediation.

    4.3k
    Active
    Free plan
25. #54S

    SynthGuard.net

    Detects and identifies synthetic media including AI-generated images, video, and text using local processing.

    4k
    Active
    From ≈ $17/mo
26. #56D

    DiditMCP · sign-in

    Verifies user identity through one API with document checks, face liveness, AML screening and transaction monitoring for KYC compliance.

    3.4k
    Active
    From $0.33 per use
    2023
27. #58P

    Permit.io

    Evaluates access control decisions for applications, APIs, and AI agents using role-based, attribute-based, and relationship-based policies.

    3.4k
    Active
    Free plan
28. #61L

    Lakera

    Detects and prevents prompt injection attacks, data leakage, and jailbreaks in AI applications with real-time threat detection.

    2.9k
    Active
    Free plan
    1993
29. #65S

    Superagent Cloud

    Runs security checks on AI agents, scanning code, dependencies, and runtime behavior for vulnerabilities.

    2.2k
    Active
    From $499/mo
30. #73S

    StrixMCP · sign-in

    Runs automated penetration tests across code, APIs, web apps, and infrastructure, validating findings and generating merge-ready fixes.

    1.4k
    Active
    From $29/user/mo
31. #74T

    TrunkMCP · sign-in

    Detects and quarantines flaky tests in CI runs, and runs a merge queue that batches pull requests and bisects failures.

    1.4k
    Active
    Free plan
    2021
32. #75X

    XposedOrNotMCP · open

    Searches indexed data breach records for an email address or domain and reports which breaches, leaked fields and a risk score appear.

    1.3k
    Active
    From $9/mo
    2017
33. #78S

    Safeguard

    Finds and fixes software vulnerabilities and zero days autonomously across dependencies and containers.

    1.2k
    Active
    From $9/mo
    2025
34. #80C

    Currai

    Analyzes AI agent conversations to detect failures, policy violations, and user needs.

    1.2k
    Active
    From $4/mo
35. #83W

    Workers' RightsMCP · open

    Encrypts a personal timeline and evidence log in the browser, checks employment-law protections, and drafts replies to employer filings.

    961
    Active
    2025
36. #87S

    S4E

    Scans websites for vulnerabilities including SQL injection, XSS, misconfigurations, and exposed credentials.

    834
    Active
    From $119/mo
    2022
37. #89K

    Kratikal Tech Limited

    Identifies and prioritizes security vulnerabilities in web apps, mobile apps, APIs, and cloud infrastructure.

    780
    Active
    Free plan
38. #91A

    AI Security Guard

    Detects malicious packages, scans prompts for injection attacks, and monitors agent runtime security.

    675
    Maintained
    Free
    2025
39. #92N

    Nurbak

    Scans GitHub repositories for vulnerabilities using a private AI model without sending code to third parties.

    644
    Active
    From $79/mo
40. #94C

    ChainGPT AI Hub

    Provides AI tools for blockchain analysis, smart contract generation and auditing, and crypto trading assistance.

    622
    Active
    From $0.01 per use
41. #97D

    DomainScan AI

    Monitors SSL certificates, DNS records, DMARC policies, and domain security threats with automated alerts and fixes.

    587
    Active
    From $9/mo
42. #99A

    AI Auto-Labeling by T-Rex Label

    Detects objects in images from visual prompts without retraining on new object classes.

    573
    Maintained
    Free
43. #101D

    DocVerify

    Detects forged and manipulated documents through forensic analysis before AI agents process them.

    542
    Active
    From $10/mo
44. #103V

    Vect

    Verifies factual claims in documents by checking against trusted sources and reports accuracy.

    517
    From $14.99/mo
45. #105L

    LayerCallMCP · open

    API that scores signups, IPs, emails, phones, domains and devices for fraud risk in a single call.

    436
    Active
    From $49/mo
46. #109A

    APort

    Enforces authorization policies for AI agents before they execute shell commands, access files, call tools, or modify repositories.

    395
    Active
    From $499/mo
    2024
47. #111O

    OpenWakeWordMCP · open

    Trains custom wake word detection models in 20 languages and exports them as ONNX for on-device use.

    381
    Active
48. #115G

    GeoImageTagger

    Detects where photos were taken, then writes GPS coordinates and generated keywords into each image's metadata fields.

    352
    Active
    From $10/mo