nowfound

AI · alternatives · 2026

24 alternatives to SIPSentinel

An AI-powered honeypot to combat phone support scammers

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

  1. 1

    Give your agent a real number and voice to make calls.

    May 2026 · pollyreach.ai · its alternatives →

  2. 2
    Vapi▲498

    Voice AI infrastructure for the internet

    2024 · its alternatives →

  3. 3
    Voquill▲112

    AI-powered dictation for Chrome

    2025 · voquill.com · its alternatives →

  4. 4
    Lemon▲299

    Voice-Powered AI Agent That Turns Voice Into Done Tasks

    Mar 2026 · heylemon.ai · its alternatives →

  5. 5
    Vapi▲547

    Voice AI agents for Developers

    2025 · its alternatives →

  6. 6
    Volamail▲303

    Open source AI powered email for everyone

    2024 · its alternatives →

  7. 7
    pipl.ai▲323

    AI-powered cold email automation without breaking the bank

    2024 · its alternatives →

  8. 8

    The AI builder for everyone

    2025 · v0.app · its alternatives →

  9. 9

    Automated testing for voice agents

    2024 · its alternatives →

  10. 10
    Vokal▲444

    A collaboration space for 10x teammates with their Al agents

    Jun 2026 · vokal.team · its alternatives →

  11. 11IP

    The stack: two agents on separate boxes. The public one (nullclaw) is a 678 KB Zig binary using ~1 MB RAM, connected to an Ergo IRC server. Visitors talk to it via a gamja web client embedded in my site. The private one (ironclaw) handles email and scheduling, reachable only over Tailscale via Google's A2A protocol. Tiered inference: Haiku 4.5 for conversation (sub-second, cheap), Sonnet 4.6 for tool use (only when needed). Hard cap at $2/day. A2A passthrough: the private-side agent borrows the gateway's own inference pipeline, so there's one API key and one billing relationship…

    Mar 2026 · georgelarson.me · its alternatives →

  12. 12
    Voicl 2.0▲334

    Easily add voice widgets to your website

    2022 · its alternatives →

  13. 13

    Hi HN :) really excited to share this with you. The one thing AI reliably does is generate noise. Half the tools I see launch are just machines for producing more noise across more channels. And people are starting to see this in the form of emails in their inboxes as spam filters are struggling. There used to be a useful signal in email: the effort a sender put into customizing a message was a rough proxy for how relevant it actually was. AI killed that. Now it's customized slop with the appearance of effort with none of the cost. It is painful that the open internet / open channels…

    Jul 2026 · captchainbox.com · its alternatives →

  14. 14
    Vocol.AI▲140

    All-in-one voice collaboration platform

    2023 · its alternatives →

  15. 15IB

    the full stack for those curious: brain (gpt-4o + trained on some notes) || orchestration (vapi)|| voice (elevenlabs)|| hosting (vercel), database (supabase)|| some design inspo from delphi || vibe coding via WisprFlow + cursor/composer ||

    2025 · parthai.vercel.app · its alternatives →

  16. 16TA

    Hello HN, I am Brian Cardinale, a penetration tester and security researcher at SecureCoders. We have been performing more and more AI based security assessments. We were presented a unique challenge of testing a system where the only interface was voice based, and as much as I like talking on the phone , we decided to create a test harness to facilitate the actual testing in a more systematic way. The technical test harness was the easy part, though. Creating test goals and attack strategies to help facilitate repeated and comprehensive testing became the real challenge. As such, we have…

    Feb 2026 · redcaller.com · its alternatives →

  17. 17

    Hi HN folks ! I am the author of AVA, a self hosted AI Voice Agent that plugs into Asterisk/Freepbx so you own all the aspects of an AI Voice agent in your own infrastructure. It uses Asterisk native Audiosocket/RTP with python engine to run STT,LLM and TTS loop. The project support several full providers openai, gemini, grok, elevenlabs out of the box and also provides options to build custom pipelines by choosing different stt tts and llm. It also supports full local agent if you have a GPU with 25GB RAM which enables realtime conversation along with tool calling. I started this…

    Jul 2026 · github.com · its alternatives →

  18. 18

    Get the Insurance that gets you

    Nov 2025 · inkasure.com · its alternatives →

  19. 19LA

    Hi HN, excited to share this open source Zapier NLA alternative I’ve been working on. A few weeks ago I found myself struggling to automate a relatively straightforward internal workflow using an open source LLM (update Hubspot based on Airtable entry and personal information coming from web sources, and send out a summary via Slack). There was no way to interact with these tools in a robust way so I decided to build my own connectors. While the existing connectors out there are helpful to reduce the risk of hallucinations by reading data from sources, agents only become truly powerful when…

    2023 · github.com · its alternatives →

  20. 20

    Your digital guardian against scams and deception

    2025 · play.google.com · its alternatives →

  21. 21UB
  22. 22LC
  23. 23

    The Most Capable AI & Voice Assistant for Trello

    29d ago · voiact.com · its alternatives →

  24. 24BY

    Voice Activity Detection (VAD) is a crucial component for Voice AI, enabling more natural and efficient interactions. TEN VAD is an open-source solution designed to supercharge your Voice AI Agents with lightning-fast, human-like conversations! TEN VAD offers some key advantages: ONNX Support: Deploy on virtually any platform or hardware architecture! This means greater flexibility and easier integration into your existing systems. Superior Detection Accuracy: Experience noticeable improvements in voice detection, leading to fewer errors and more reliable performance. Smaller & Faster: Enjoy…

    2025 · github.com · its alternatives →

Also compare

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →