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. The literal tool list a well-known operator runs, useful as a starting template. gralio.ai Article · How Founders Use AI Greg Isenberg's vibe marketing software stack Gralio
  2. Practical picks segmented by team size, including solo-founder-friendly options. marketerhire.com Article · How Founders Use AI Top 12 AI Marketing Tools Every Marketer Needs MarketerHire
  3. Explains the convergence of agents, automation tools, and cheap custom software. ecommerce-ai.beehiiv.com Article · How Founders Use AI The Rise of Vibe Marketing: How AI Is Reshaping the Marketing Landscape Ecommerce AI newsletter
  4. A skeptical unpacking of the trend so you adopt the substance, not the hype. themarketingnewsletter.org Article · How Founders Use AI Vibe Marketing Uncovered The Marketing Newsletter
  5. One of Google's first 500 employees on which PPC tools and skills survive the AI shift. optmyzr.com Article · How Founders Use AI The PPC Pioneer's Playbook: Fred Vallaeys on What Changed and What Still Matters Optmyzr
  6. Covers the Meta-specific layer of the stack once you outgrow the basics. adlibrary.com Article · How Founders Use AI Meta Advertising Tools: The 11 Best for Scaling in 2026 AdLibrary.com
  7. The vendor's own end-to-end recipe: script structure, avatar choice, and export specs. community.heygen.com Guide · How Founders Use AI The Ultimate Guide to Creating AI UGC Ads with HeyGen HeyGen
  8. A practitioner walkthrough focused on making avatar ads read as native, not corporate. community.heygen.com Guide · How Founders Use AI How I Create Realistic UGC Video Ads with AI Avatars HeyGen community
  9. Hook-problem-solution-CTA script framework applied specifically to avatar ads. community.heygen.com Guide · How Founders Use AI How to Create Effective Ads Using HeyGen HeyGen
  10. Covers the 175-language localization angle, useful for India-plus-global founders. heygen.com Guide · How Founders Use AI HeyGen for Marketers: Jumpstart Guide HeyGen
  11. Benchmarks on why UGC-style creative outperforms polished brand ads on CPC. heygen.com Article · How Founders Use AI UGC Video Creation with AI for High-Impact Ads HeyGen
  12. An independent hands-on review of the leading AI-actor tool, costs included. fritz.ai Article · How Founders Use AI Arcads AI Review (2025): Create 100s of Winning Video Ads With AI Actors Fritz AI
  13. The clearest head-to-head: Arcads for scroll-native ads, HeyGen for polish and languages. admakeai.com Article · How Founders Use AI HeyGen vs Arcads: Which AI UGC Ad Tool Actually Converts? AdMake AI
  14. Second opinion on the same matchup with batch-testing economics spelled out. playcut.ai Article · How Founders Use AI HeyGen vs Arcads: Which AI Video Tool Wins for You? Playcut
  15. Price-per-video math across all the main tools so you can budget honestly. argil.ai Article · How Founders Use AI Comparing HeyGen, Argil, Arcads, Creatify and Zeely pricing Argil
  16. A wider sweep of the category including cheaper challengers worth testing. adlibrary.com Article · How Founders Use AI AI UGC Video Generators: 9 Best Tools for Ads AdLibrary.com
  17. Context on the product launch that made avatar UGC mainstream. medium.com Article · How Founders Use AI HeyGen Launches AI-Powered UGC Ad Avatars Ada Gao (Medium)
  18. Budget alternatives from free to $19/month for pre-revenue founders. shhots.ai Article · How Founders Use AI Arcads AI Alternatives: 13 Cheaper UGC Ad Tools Shhots AI
  19. A blunt audit of which Advantage+ modules to enable and which to override. get-ryze.ai Article · How Founders Use AI Meta Advantage+ in 2025: The Automation That Works (And the Parts That Don't) Ryze AI
  20. Exactly the control-vs-automation tradeoff founders worry about, mapped setting by setting. clickguard.com Article · How Founders Use AI The Marketer's Guide to Meta Advantage+: Mastering Automation Without Losing Control ClickGUARD
  21. A complete reference for the inputs-in, execution-out philosophy of Advantage+. bir.ch Article · How Founders Use AI Meta Advantage+ Guide: Features, Tools, Optimization Birch
  22. The most trusted independent Meta ads analyst decodes the retrieval engine change. jonloomer.com Article · How Founders Use AI Meta Andromeda: What It Means for Your Ad Strategy Jon Loomer
  23. Shows concretely what 'diverse concepts' means with seven worked examples. jonloomer.com Article · How Founders Use AI Meta Andromeda and Creative Diversification: 7 Examples Explained Jon Loomer
  24. A global agency's strategic read on creative-first ad delivery. dentsu.com Article · How Founders Use AI The Creative Era: How Meta's Andromeda Rewrites Ad Strategy Dentsu

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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
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