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Alternatives

Products that do what LumenOTP does

Affordable virtual numbers for OTP verification

  1. 1
    VerifyKit175

    Verify your users faster and cheaper than ever

    2022

  2. 2

    SMS-Verify.me | secure sms verification made simple

    2025

  3. 3

    Setup OTP API easily

    2021

  4. 4
    Everify69

    SMS verification made dead-simple, secure and cheap.

    2021

  5. 5

    Secure apps & services with multichannel user authentication

    2021

  6. 6

    Verify users safely with Email OTP fallback

    Oct 2025

  7. 7
    Tokenwise143

    A smart LLM proxy that shows where you're overpaying

    Jun 2026

  8. 8

    Build QR Code campaigns-dynamic, trackable & retarget online

    2019

  9. 9

    Test + develop ChatGPT apps and MCP apps (ext-apps) locally

    Jan 2026

  10. 10
    Clerk133

    SMS for Slack

    2020

  11. 11OO

    2021 · obsidianapp.io

  12. 12

    Drop-in MCP Security Developers Love and CISOs Trust

    Mar 2026

  13. 13

    Tokens are money. Save both.

    16d ago · router.com

  14. 14
    aCheck83

    Smart Verification, QR codes for rapid data verification

    2022

  15. 15LI
  16. 16
    Agihalo68

    LLM Router for A.I Agent & Saas with x402

    Jan 2026

  17. 17

    Real-time compliance & security validation for AI coding

    Dec 2025

  18. 18BO

    We’re open-sourcing a simple way to add “canary tools” to AI agents via MCP honeypots. These are functions your agent should never call during normal operation. If a canary is invoked, you get a high-fidelity signal of prompt-injection, tool hijacking, or lateralization—no heuristics, no extra model calls. What it is: - Go framework exposing decoy tools over MCP that look legitimate (names/params/descriptions), return safe dummy output, and emit telemetry when invoked. - Runs alongside your real tools; ship events to stdout/webhook or your pipeline (Prometheus/Grafana,…

    Sep 2025

  19. 19LT

    Introducing Lailaims: An open source client-side web app that lets you test multiple LLM providers (GPT-4, Claude, Gemini, Mistral, DeepSeek) side-by-side in one interface. Your data stays private - everything runs locally in your browser! Video example: https://vimeo.com/1084976999/8687b63f85

    2025 · lailaims.pages.dev

  20. 20WA

    http://wolfrasms.com It's like Siri for the 99%. Or a TI-89 via SMS. Or something. If you want to skip the website, just text your query to +1 206 462 5742 (that's +1 206 46-ALPHA). Feel free to test it out and give me feedback. While it will stay a tiny project, I'm interested in any way to make it better. Built with the Twilio & Wolfram|Alpha APIs, and Heroku of course.

    2012

  21. 21IB

    SMSolve is a groundbreaking service that provides temporary phone numbers, enabling users to securely verify accounts across 150+ countries and 1000+ online services without compromising their personal phone numbers. Our platform is designed for anyone looking to protect their privacy while engaging with digital platforms—be it for creating multiple accounts or simply avoiding spam on personal numbers. As a special sign-up bonus, we are currently offering 1 free telephone SMS activation! This allows new users to experience the security and convenience of SMSolve without any initial cost.

    2024 · smsolve.com

  22. 22MM

    I built MCPlexor to solve a token waste problem I kept running into with MCP-based agents. The Problem: MCP (Model Context Protocol) is great for giving LLMs access to external tools. But if you connect multiple servers (GitHub, Linear, Postgres, Slack), you end up with 40-50k tokens of tool definitions injected into every request – before the agent even does anything. On a 200k context model, that's 25% gone. On smaller models, it's worse. And most runs only use 1-2 tools. The Solution: MCPlexor sits between your agent and your MCP servers. Instead of loading all tool definitions upfront:…

    Feb 2026 · mcplexor.com

  23. 23UQ

    2013 · samgranger.com

  24. 24SO

    A YubiKey, among other use cases, can be used to store OTP credentials and generate one-time passwords. If you are a YubiKey user, chances are you have multiple YubiKeys for redundancy and/or convenience. yop is a command line tool that allows keeping OTP credentials on multiple YubiKeys in sync.

    2024 · github.com

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