Alternatives

Products that do what API DNA does

Free API Fingerprint Verification Engine

1. 1
   TypingDNA Authentication API▲187

   Secure users by their typing behavior with free low-code API

   2020

2. 2
   ApiPrivacy▲88

   AI detects & stops sensitive-data leaks in APIs & apps.

   2024

3. 3
   Checker▲124

   Detect fake signups in under 200ms with an easy-to-use API

   2025

4. 4
   ID Verify by Trueface▲169

   Simplest way to verify identities online

   2018

5. 5
   Gradient▲153

   Developer API for building private LLMs that you own

   2023

6. 6
   Swagger Inspector▲141

   Free online tool to test APIs and autogenerate documentation

   2018

7. 7
   AI or Not▲164

   Detect AI generated images, audio & KYC documents for free.

   2024

8. 8
   Free LLM API▲86

   Access 1 billion tokens per month for free

   Apr 2026 · github.com

9. 9
   Taylor AI▲118

   Fine-tune open source LLMs in minutes

   2023

10. 10
    deepidv▲96

    AI-native verification & anti-fraud Engine

    Mar 2026

11. 11
    Verify LLM API▲4

    Check which model your AI agent is really using

    Jul 2026 · verifyllmapi.com

12. 12FA
    FingerprinterJS – A tiny JavaScript library for browser fingerprints▲24

    I made FingerprinterJS, a small library with no dependencies that creates browser fingerprints from signals like canvas, WebGL, audio, fonts, userAgent, and screen info. It’s written in TypeScript, lets you enable/disable collectors, add custom data, and includes a simple suspicious-activity score. Would love feedback.

    Sep 2025 · github.com

13. 13
    LangSearch▲37

    Free web search API, free rerank API, world engine for AGI

    2024

14. 14KD
    KeyLeak Detector – Scan websites for exposed API keys and secrets▲30

    I built this after seeing multiple teams accidentally ship API keys in their frontend code. The problem: Modern web development moves fast. You're vibe-coding, shipping features, and suddenly your AWS keys are sitting in a tag visible to anyone who opens DevTools. I've personally witnessed this happen to at least 3-4 production apps in the past year alone. KeyLeak Detector runs through your site (headless browser + network interception) and checks for 50+ types of leaked secrets: AWS/Google keys, Stripe tokens, database connection strings, LLM API keys (OpenAI, Claude, etc.), JWT…

    Nov 2025 · github.com

15. 15DC
    DFPM – Chrome extension to detect JavaScript fingerprinting▲25

    2018 · github.com

16. 16OS
    Open-Source tool for automatic MCP API on top of your database for LLMs▲5

    We’re building an open-source tool that makes it easy to expose secure, LLM-optimized APIs on top of your structured data—without manually designing endpoints or worrying about compliance. AI agents and LLM-powered applications need structured access to data, but traditional APIs and databases weren’t built with AI workloads in mind. Our tool automatically generates APIs that: - Filter out PII & sensitive data to comply with GDPR, CPRA, SOC 2, and other regulations. - Provide traceability & auditing, so AI apps aren’t black boxes, and security teams stay in control. - Optimize for AI…

    2025 · github.com

17. 17
    APIMaster.ai▲2

    Detect fake LLM APIs & reveal the real model underneath

    Jun 2026 · apimaster.ai

18. 18EA
    Engine – A multi-LLM alternative to Codex▲16

    2025 · enginelabs.ai

19. 19
    KeyProbe▲1

    Validate LLM API keys & see model access — free forever

    Mar 2026 · shortcomponents4u.com

20. 20
    Byte▲8

    Your local AI model or API key in a customizable llm chatbox

    Jul 2026 · get-byte.app

21. 21L2
    Llama 2 Uncensored 70B as API▲18

    2023 · woolapi.com

22. 22DD
    DevicePrint – device fingerprinting without cookies▲21

    Hi HN, I built DevicePrint after running into problems with duplicate accounts and unreliable cookies in my own projects. DevicePrint is a lightweight device fingerprinting tool designed for developers. It helps identify devices across sessions without relying on cookies. Use cases include fraud detection, preventing duplicate signups, and security-sensitive workflows. I'd really appreciate feedback — especially around privacy concerns or edge cases you’ve run into. Link: https://deviceprint.io

    Jan 2026

23. 23
    Mailuminati Guardian▲1

    Collaborative & scalable spam/phishing detection

    Jan 2026

24. 24
    APIMODELS▲1

    One API key for 60+ AI models — LLM, image, video, audio

    12d ago · apimodels.app

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