Litmus

What it does

Most AI tools give every idea a 7/10. Litmus doesn't. Bad ideas score low — brutally honest, calibrated scoring with no grade inflation. Toggle between Plain English and Standard output. Confirm your idea before any credits are spent. And instead of one AI guessing, dedicated agents handle competitor research, market dynamics, pivot strategies, and the final verdict separately — then combine into one cohesive report.

Litmus runs AI agents that search the real web to validate your startup idea. Get a rated verdict, competitor map, market sizing, and brutal honest feedback — in minutes.

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  Litmustest.aiDec 2025 · litmustest.ai · ▲3

  Interview SMART, Hire With Confidence

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  VerdictJun 2026 · verdict.simplify.com.pl · ▲3

  AI validates your business idea - GO, PROCEED or KILL

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  IdeaHuntMar 2026 · ideahunt.online · ▲14

  Destroy bad ideas before you build

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  OptimlyMar 2026 · optimly.ai · ▲11

  Optimly measures how AI describes your brand against verified ground truth, then does the work to correct it.

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  IdeaCouncilJan 2026 · idea-council.com · ▲7

  I am working on this because I am always afraid of building things that people don't actually want. I let agents role-play analysis the idea, quote and debate with each other. Still working on the output quality, every feedback is priceless. Pls try it out!

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  IdeaCheckMar 2026 · ideacheck.cc · ▲3

  AI validates your startup idea with real market data

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  Spira Maxima▲578

  Video model that turns script into viral social media videos

  AI · 17d ago · spira.ai

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  Rill Browser▲540

  The browser where Claude Code and Codex work beside you

  AI · 17d ago · rill.love

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  Germany's new sovereign AI model Kolibri▲424

  Kolibri is Aleph Alpha

  AI · 19d ago · tej.as

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  Giving Opus 5.5 a simulated paint canvas▲392

  Paintings by AI models: programs run through a simulation of oil paint.

  AI · 21d ago · stillwet.art

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  PixVerse R2▲381

  A real-time world model you can explore and change

  AI · 29d ago · world.pixverse.video

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  Hemory▲381

  Keep listening. Searchable memory for your AI agents.

  AI · 30d ago · hemory.com

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  Brila▲1,364

  One-page websites from real Google Maps reviews

  AI · Apr 2026 · brila.ai

• AG
  A game where you build a GPU▲964

  Thought the resources for GPU arch were lacking, so here we are

  Life & fun · Apr 2026 · jaso1024.com

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  I built a tiny LLM to demystify how language models work▲915

  Built a ~9M param LLM from scratch to understand how they actually work. Vanilla transformer, 60K synthetic conversations, ~130 lines of PyTorch. Trains in 5 min on a free Colab T4. The fish thinks the meaning of life is food. Fork it and swap the personality for your own character.

  AI · Apr 2026 · github.com

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  Fathom 3.0▲800

  AI meeting notes: now bot-free, in ChatGPT & Claude + more

  AI · Apr 2026 · fathom.ai

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  Brutalist Concrete Laptop Stand (2024)▲786

  I made a laptop stand out of solid concrete, in the style of brutalist architecture, with themes of urbex and urban decay

  Life & fun · Apr 2026 · sam-burns.com

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  I built a frontpage for personal blogs▲783

  With social media and now AI, its important to keep the indie web alive. There are many people who write frequently. Blogosphere tries to highlight them by fetching the recent posts from personal blogs across many categories. There are two versions: Minimal (HN-inspired, fast, static): https://text.blogosphere.app/ Non-minimal: https://blogosphere.app/ If you don't find your blog (or your favorite ones), please add them. I will review and approve it.

  AI · Apr 2026 · text.blogosphere.app