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. A tested roundup of the specialist writing tools (Jasper, Anyword, Writer and others), each with who it suits and its price. zapier.com Article · How Founders Use AI The 6 best AI writing generators in 2026 Zapier
  2. The scaled content abuse policy in full, so you know where AI-assisted publishing crosses the line. developers.google.com Guide · How Founders Use AI Spam policies for Google web search Google Search Central
  3. What the $99-a-month toolkit tracks: prompts, brand performance and mentions in AI answers; no free trial. semrush.com Guide · How Founders Use AI AI Visibility Toolkit Semrush
  4. Hands-on picks with prices: ElevenLabs as the all-in-one choice (from $6 a month), Hume Octave for designing a voice from a... zapier.com Article · How Founders Use AI The 8 best AI voice generators in 2026 Zapier (Miguel Rebelo)
  5. How to edit a photo in Google Photos by describing the change, and where the feature is available so far. support.google.com Guide · How Founders Use AI Use Ask Photos to search, edit and get assistance Google
  6. Hands-on picks with prices: Photoshop for full-featured editing (from $19.99 a month), Luminar ($129 perpetual licence), Canva,... zapier.com Article · How Founders Use AI The best AI photo editors in 2026 Zapier (Harry Guinness)
  7. YouTube's own specification: 3840 x 2160 for videos and 2160 x 3840 for Shorts, a 640-pixel minimum, JPG or PNG, the file-size... support.google.com Guide · How Founders Use AI Add custom thumbnails on YouTube YouTube
  8. How to test up to 3 titles or thumbnails in YouTube Studio; the one with the highest watch time is shown to everyone, and who... support.google.com Guide · How Founders Use AI A/B test titles and thumbnails YouTube
  9. Ideogram's image models, built to get the words in an image right; every plan, free included, can use all of them. docs.ideogram.ai Guide · How Founders Use AI Ideogram models Ideogram
  10. Flow Music's core features are free; Google AI Plus, Pro and Ultra members get its Starter, Plus and Member plans. support.google.com Guide · How Founders Use AI Manage your AI credits and Google Flow Music plan Google
  11. YouTube's free library of royalty-free production music and sound effects, copyright-safe for your YouTube videos, found in... support.google.com Guide · How Founders Use AI Use music and sound effects from the Audio Library YouTube
  12. How to scan yourself with a phone to make an avatar with your own visual and audio likeness, call it into any shot with @me,... support.google.com Guide · How Founders Use AI Create and use your avatar in Google Flow Google
  13. How YouTube adds translated audio tracks to your videos, who is eligible, and how to review a dub before it goes live. support.google.com Guide · How Founders Use AI Use automatic dubbing YouTube
  14. YouTube's inauthentic content rule: mass-produced, generic or repetitive videos are not eligible for monetisation, the line... support.google.com Guide · How Founders Use AI YouTube channel monetization policies YouTube
  15. The free, open-source painting program's own guide to frame-by-frame animation, starting with a walk cycle. docs.krita.org Guide · How Founders Use AI Animation with Krita Krita
  16. Runway's own video model, which it says ranked first on the Artificial Analysis text-to-video benchmark at launch. runway.com Article · How Founders Use AI Introducing Runway Gen-4.5 Runway
  17. The model for editing existing video: adding, removing and transforming objects, generating new angles of a scene, and changing... runway.com Article · How Founders Use AI Introducing Runway Aleph Runway
  18. Who Runway is, its research into world models, and its offices in New York, San Francisco, London, Tokyo and elsewhere. runway.com Article · How Founders Use AI About Runway Runway
  19. An independent report on the Gen-4.5 launch and where Runway stands against the big labs. cnbc.com Article · How Founders Use AI Runway rolls out Gen-4.5 AI video model that beats Google, OpenAI CNBC
  20. How to ask Gemini to find a video and summarise it, the setting it needs, and what it cannot do with your YouTube account. support.google.com Guide · How Founders Use AI Find and ask about YouTube content in Gemini Apps Google
  21. YouTube's built-in Ask feature for questions about the video you are watching: who can use it, on which devices, and its limits. support.google.com Guide · How Founders Use AI Ask YouTube on the watch page YouTube
  22. Which plans include Notion AI (Business and Enterprise), how Notion credits are spent, and how your data is handled. notion.com Guide · How Founders Use AI Notion AI FAQs Notion Help Center
  23. OpenAI's tool that rewrites a prompt to current best practice in the API dashboard; the page notes the dataset-backed optimizer... developers.openai.com Guide · How Founders Use AI Prompt optimizer OpenAI
  24. Three experiments on AI and ideas: GPT-4 produced 35 of the 40 best-rated product ideas against Wharton students, with the... oneusefulthing.org Article · How Founders Use AI Automating Creativity Ethan Mollick (One Useful Thing)

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