Someone Should Build This

What it does

50 crowd-validated startup ideas sourced from 12,000+ entrepreneurs. Each idea includes a defined problem, target audience, and revenue model. Covers SaaS, AI, Marketplaces, Health, FinTech, Education & more. Includes a 30-Day Validation Playbook and MVP Budget Guide. Stop searching for ideas. Start building.

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  Validated ideas 2.02020 · jocidev.gumroad.com · ▲363

  9,000 popular but poorly executed apps

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  Startup Idea Validator2023 · indielogs.com · ▲60

  Validate your startup idea in less than 20 seconds

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  Ideas Validation Framework 2.02020 · ▲87

  A guide on validating business ideas using communities

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  Lean Validation Playbook2016 · leanvalidation.hanno.co · ▲73

  A guide on how to validate your startup idea, quickly

• AS
  A site to help you validate ideas in bulk2020 · ▲93

  Hi HN! I made a really quick web app to help people validate their ideas. The app is a simple landing page builder, but every page includes a really simple Yes/No "Are You Interested?" poll. Every vote is recorded and tracked, and if they click yes they are brought to a page where they can submit an email. This makes validating ideas super easy because you can post your link to different communities and get statistically significant results as well as build an email list. Given an hour, you could easily create 50 different landing pages and be able to validate your ideas in bulk. The…

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  ProvenToolsJan 2026 · proventools.net · ▲4

  Stop researching. Start building. 130,000+ validated ideas.

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  Lofi Cities – Pixel-art city nights with browser-generated lofi▲319

  Endless lofi beats composed live in your browser, over pixel-art nights in Paris, Tokyo, New York, Hong Kong, Sydney, San Francisco and more. Free, no sign-up.

  Work · 26d ago · loficities.com

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  Smooth Recorder▲257

  Mac screen recordings that look edited when you hit stop

  Work · 20d ago · smoothrecorder.com

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  Figma Specs▲225

  A container for your context that lives on the Figma canvas

  Work · 5d ago · figma.com

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  The rarest tech books and docs you've probably never read▲190

  Work · 14d ago · readrare.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