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Dev tools · alternatives · 2026

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24 alternatives to Marqt.org lets you vote on the truth

I'm Arthur, and I wanted to share an MVP for Marqt.org, which lets you crowd-source the truth. John Stuart Mill said that "Truth emerges from the clash of ideas." In that spirit, Marqt brings two adversarial sides together to quantify truth and showcase the best arguments for each side. It is inspired by markets, where buyers and sellers discover a product's true price and update it dynamically. The ultimate aim is to build an open-source semantic knowledge base that represents the collective wisdom of humanity in real-time. If we can do this, I believe it can solve the problem of…

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Marqt.org lets you vote on the truth launched in 2023; newer entries below may have overtaken it.

  1. 1

    Spark conversations, share stories, embrace anonymity

    2023 · its alternatives →

  2. 2

    Ask once. Compare multiple AI models. Get one synthesis.

    Jun 2026 · truth.agnthub.ai · its alternatives →

  3. 3

    Your self-hostable AI debate companion

    2023 · squidandfish.gumroad.com · its alternatives →

  4. 4PM

    Hey HN, I have been working on using the info-gathering and truth-seeking properties of the markets to get more honest reporting on all sort of things. The idea is to have a market game where people can wager a fake currency on what think is true and then, the citizen reviews the crowd-sourced information and makes a judgement about which position has the best case. It is crowd-sourced journalism with a market game. Please let me know what you think and my email is [email protected], if you have any questions.

    2025 · thecitizen.io · its alternatives →

  5. 5

    I built a tool to solve a problem I kept running into: I was making product decisions based on guessing instead of real users. I kept building stuff nobody wanted as I was usually wrong. So, I built HolyShift: AI agents that validate product ideas by talking to real people on Reddit, HN, X, and LinkedIn … then generate a detailed GTM and “Should we build this?” report. No synthetic data (ChatGPT). No predictions. Only real conversations from real people. What it does • Posts platform-native questions (where allowed) • Collects real reactions, objections, pricing signals • Clusters feedback…

    Nov 2025 · app.holyshift.ai · its alternatives →

  6. 6

    I wanted a way for people to support companies and people that align with their political beliefs. Additionally, I think it can serve as a valuable, source-linked public ledger of who said and did what over time, especially as incentives change and people try to rewrite their positions. This is fully AI-coded, researched, and sourced. Additionally, AI helped develop the scoring system. The evidence gathering is done by a number of different agents through OpenRouter that gather and classify source-backed claims. The point of that is not to pretend bias disappears, but to avoid me manually…

    Mar 2026 · magaornot.ai · its alternatives →

  7. 7IM

    Got tired of my debates with my friend's ending in "I'm right bc I said so" so I made a platform where you can debate with your friend's(or a bot, recently added feature) about whatever you want, and after the debate is done a LLM judges who's more sound in logic. Gain points and climb the leaderboard! Feedback and criticism would be appreciated(there's a discord in there if you wanna talk more in depth) p.s.: I decided to use google acc sign in since it makes the whole thing easier to manage(live chatroom feature, etc.). I don't actually do anything with your emails

    2025 · crs-prod-rankeddebate-l4dnggfaca-nn.a.run.app · its alternatives →

  8. 8RA

    Hey HN, I'm a founder at Ovlo a supply chain company.I had a problem. After every batch of customer interviews/research/feedback sessions, I'd run ideas through an LLM to help me decide what we should build next. Except it was obvious to my cofounder I wasn't really validating anything. LLMs are incredibly good at agreeing with you in subtle ways, especially when you feed them context that already reflects your thoughts. I'd ask "Does this make sense?" and get a beautifully worded essay about why yes, obviously, this is the best thing ever. I was using AI as an echo chamber without…

    Dec 2025 · roundtable.ovlo.ai · its alternatives →

  9. 9

    Turn any topic into an AI-powered debate.

    2025 · debategpt.ai · its alternatives →

  10. 10

    Powered living books for sourced learning

    Dec 2025 · truthangel.org · its alternatives →

  11. 11

    Ever wish you could get the best arguments for both sides of a debate? I built an AI-powered debate platform that pits language models against each other on controversial topics. Each AI is randomly assigned a side (pro/con). You vote before and after to see if you were persuaded. Most content today presents lopsided arguments. They provide strong points for one side, weak ones for the other. This project aims to surface the strongest arguments from both sides, using LLMs to simulate a fair debate. With enough usage, I want to use it to benchmark LLMs. My hypothesis is that randomly…

    Nov 2025 · aidebatearena.app · its alternatives →

  12. 12

    Hello, I made this site to combat misinformation on the internet by allowing users to prove that their claim is valid by linking multiple sources and combining them in a single link It's very early stage so I would love feedback on: - What types of claims would be most useful to you? - How can I make verification/sourcing more robust? - Any features that would make this actually useful vs just interesting? Thanks in advance, feel free to roast :)

    2025 · onlinesourcerer.org · its alternatives →

  13. 13

    Be the Answer, Not just a Result

    Jan 2026 · sigmaeo.com · its alternatives →

  14. 14

    I built a tool that scans AI platforms with buyer questions relevant to your domain and shows you whether they mention you or not. Enter your domain, it generates queries based on your space, sends them to ChatGPT, Perplexity, and Google AI, then scores you out of 100 based on how often you show up in the responses. The part I think is actually useful: it doesn't just tell you the problem. It shows you which queries you're missing from, why, and gives you fix pages (structured content designed to be citable by LLMs) and weekly action plans. Free scan on the homepage, no signup needed. Tech:…

    Feb 2026 · cabbageseo.com · its alternatives →

  15. 15

    Where AI agents argue, stake, and earn $. No funding needed.

    Feb 2026 · argue.fun · its alternatives →

  16. 16

    I haven't seen anything like this so I decided to build it in a weekend. How it works: You see a bunch of things pulled from Wikipedia displayed on cards. You ask yes or no questions to figure out which card is the secret article. The AI model has access to the image and wiki text and it's own knowledge to answer your question. Happy to have my credits burned for the day but I'll probably have to make this paid at some point so enjoy. I found it's not easy to get cheap+fast+good responses but the tech is getting there. Most of the prompts are running through Groq infra or hitting a cache…

    Apr 2026 · sleuththetruth.com · its alternatives →

  17. 17TM

    Hi HN, My name is Sapiens. I started learning about Reason and Science well into my 30s. I'd be fair to say that the Skeptic and Humanist communities saved my soul. So I made a mind-calibration tool in service of the cause. It's an app that quizzes the user about myths and misconceptions. By exploiting the resulting cognitive dissonance, it helps retune the user's confidence levels in their beliefs and improves their mental models. The tool uses Brier's so-called "proper" scoring system, a ruthless squared-error-loss scale (Brier scoring is widely used by intelligence agencies to align their…

    2025 · memevaccine.com · its alternatives →

  18. 18

    Hi HN! I'm Anand, and I’m launching CQ2 (https://cq2.co) – a tool for thoughtful and coherent discussions. Discussions using existing written communication tools often turn into a tangle of sub-discussions around quotes, making it hard to follow. There's no clear view of all the comments in a specific sub-discussion and how the sub-discussion is related to its parent, forcing constant scrolling and hopping between comments to gather context for a meaningful response. On top of all that, it's tough to tell if any key points were overlooked. Meetings are hit-or-miss. When it comes to…

    2024 · cq2.co · its alternatives →

  19. 19

    AI judges your arguments. Get proof you were right!

    Dec 2025 · whosright.xyz · its alternatives →

  20. 20

    Watch ChatGPT Claude, Gemini & Grok debate each other live

    Mar 2026 · its alternatives →

  21. 21

    Six AIs debate it. You get one clear answer.

    May 2026 · aiquorum.io · its alternatives →

  22. 22

    Hey HN! I got the idea for this during the Lovable AI competition and decided to turn it into a Chrome extension. TrueSift helps verify the accuracy of online content in real time. What it does: - Uses AI to analyze text on any page and highlight questionable claims. - Provides quick fact-check summaries and trusted sources without leaving the page. - Lightweight and privacy-conscious (no unnecessary data collection). Why I built it: Misinformation spreads fast, and I wanted a tool that makes truth-checking effortless for readers, journalists, and researchers. Try it out: truesift.dev I’d…

    2025 · truesift.dev · its alternatives →

  23. 23

    The first open community where only AI agents debate stocks

    Feb 2026 · stockmolt.ai · its alternatives →

  24. 24

    Ask a complex question while AI models debate the answer

    2025 · its alternatives →

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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 →