Explore · The library

Every resource founders actually use, in one library.

The essays, videos, podcasts, books and tools behind every answer across eChai's hubs, from starting up to go-to-market, D2C, founder money and AI, each with a note on why it is here.

What founders use most, ranked by how many answers lean on it.

  1. Perplexity's cited answers make it the least hallucination-prone tool for competitor fact-finding. patrickfrank.com Article · How Founders Use AI Use Perplexity for Better Research + Competitive Analysis Patrick Frank
  2. A free workflow that finds competitors and files structured profiles into Notion automatically. n8n.io Tool · How Founders Use AI Automate competitor research with Exa.ai, Notion and AI agents (n8n template) n8n community
  3. Set-and-forget monitoring so pricing page changes come to you instead of you checking weekly. n8n.io Tool · How Founders Use AI Monitor competitors' websites for changes with OpenAI and Firecrawl (n8n template) n8n community
  4. Purpose-built for the hardest part: keeping competitor pricing data actually current. n8n.io Tool · How Founders Use AI Automated competitor pricing monitor with Bright Data MCP & OpenAI (n8n template) n8n community
  5. Combines scraping, RSS, and an LLM into a continuous competitor intelligence feed. n8n.io Tool · How Founders Use AI AI-driven competitor & market intelligence with GPT-4 & Apify (n8n template) n8n community
  6. A structured course if you want to go deep on AI-driven market intelligence rather than piece it together. udemy.com Course · How Founders Use AI ChatGPT Competitive Analysis: Master AI Market Intelligence Udemy
  7. Video · How Founders Use AI The RIGHT Way to Calculate your Market Size (TAM/SAM/SOM) YouTube creator (startup finance)
  8. Video · How Founders Use AI How to Size Your Market (TAM SAM SOM) the RIGHT WAY YouTube creator (startup funding)
  9. Video · How Founders Use AI Why Everyone Gets TAM Market Sizing WRONG: Explained by a VC VC (YouTube)
  10. Video · How Founders Use AI How to Size Your Addressable Market (TAM, SAM, SOM, top-down vs. bottom-up) YouTube creator (startup education)
  11. Video · How Founders Use AI How To Size Your Market (TAM, SAM, SOM Explained Simply) YouTube creator (startup education)
  12. Video · How Founders Use AI Must watch before you start up | TAM SAM SOM | Market size calculation YouTube creator (startup education)
  13. Carta's benchmark-backed definitions, including why bottom-up SOM closes rounds faster. carta.com Guide · How Founders Use AI Market Size: What is TAM, SAM, & SOM? Carta
  14. Current investor expectations, including the Carta data on presenting both sizing directions. waveup.com Guide · How Founders Use AI TAM, SAM, SOM: How to calculate market size Waveup
  15. Reverse-engineers the evaluator's checklist so your AI-assisted numbers answer the real questions. goingvc.com Article · How Founders Use AI How Investors Use TAM, SAM, SOM to Evaluate Startups GoingVC
  16. A practical sizing guide from an Indian product studio, useful for India-market examples. f22labs.com Guide · How Founders Use AI TAM, SAM & SOM: How To Calculate the Market Size? F22 Labs (India)
  17. A free AI calculator to generate a first-draft TAM/SAM/SOM you then verify. founderpal.ai Tool · How Founders Use AI AI Market Size Calculator (free, no email) FounderPal
  18. Structured inputs stop you from letting the AI invent the assumptions. pmtoolkit.ai Tool · How Founders Use AI Free TAM SAM SOM Calculator: Investor-Ready Market Sizing in 10 Minutes PM Toolkit
  19. A pitch-deck consultancy's view on presenting the numbers investors will not roll their eyes at. spectup.com Guide · How Founders Use AI TAM, SAM, SOM: The Founder's Guide To Market Sizing Spectup
  20. Benchmarks to sanity-check whether the number your AI produced is even plausible for your industry. worthbuild.io Article · How Founders Use AI What Is a Good TAM for a Startup? Benchmarks by Industry WorthBuild
  21. Video · How Founders Use AI Market research with ChatGPT YouTube creator (AI tutorials)
  22. Video · How Founders Use AI ChatGPT Deep Research: Turn Market Analysis into Revenue (Full Guide) YouTube creator (AI for business)
  23. Video · How Founders Use AI Unlocking ChatGPT's Deep Research: Marketing Innovation w/ HubSpot CMO Kipp Bodnar HubSpot (Kipp Bodnar)
  24. Video · How Founders Use AI How to Use ChatGPT Deep Research: Generate Reports YouTube creator (AI tutorials)

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The hubs

Starting Up Find an idea, validate it, build, and land your first customers. 1327 questions GTM Go-to-market, from breaking in to how the best teams do it. 379 questions D2C Building a direct-to-consumer brand, India-first. 512 questions Wealth Paying yourself, ESOPs, secondaries, and de-risking founder wealth. 165 questions How Founders Use AI How founders actually put AI to work, mapped topic by topic. 360 questions Glossary Plain-language definitions of the startup and VC terms you'll hit. 425 terms