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. What Notion AI does across a workspace: writing, search across connected apps, agents and meeting notes. notion.com Tool · How Founders Use AI Notion AI Notion
  2. Notion's bot-free meeting recorder, which writes summaries and action items into your workspace. notion.com Tool · How Founders Use AI AI Meeting Notes Notion
  3. 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
  4. 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)
  5. How to let Gemini work with Gmail, Drive, Calendar, Maps and YouTube, and how to turn each connection off. support.google.com Guide · How Founders Use AI Use & manage Connected Apps in Gemini Google Gemini Help
  6. How Deep Research searches many sources (Google Search by default, or ones you choose) and writes a report you can read or export. support.google.com Guide · How Founders Use AI Use Deep Research in Gemini Apps Google Gemini Help
  7. Drafting and editing a document or a small app side by side with Gemini. support.google.com Guide · How Founders Use AI Create docs, apps & more with Canvas Google Gemini Help
  8. What Plus adds for $20 a month: priority access, higher limits, reasoning models, voice, images, uploads and deep research, and... help.openai.com Guide · How Founders Use AI What is ChatGPT Plus? OpenAI Help Center
  9. A tested comparison updated 14 September 2026: Claude for professionals, Gemini for Google users, Copilot for an integrated... zapier.com Article · How Founders Use AI The 4 best ChatGPT alternatives in 2026 Zapier
  10. What uses up your Claude limits (long chats, big files, Research, model and effort choice) and how to make them last. support.claude.com Guide · How Founders Use AI Usage limit best practices Anthropic Help Center
  11. What Gemini can do on a phone: talk about your screen, use Live, make calls and messages, set reminders and work with connected... support.google.com Guide · How Founders Use AI What you can do with your Gemini mobile app Google Gemini Help
  12. The official Gemini app, with more than 1 billion downloads. play.google.com Tool · How Founders Use AI Google Gemini on Google Play Google LLC
  13. The official ChatGPT app, with more than 1 billion downloads and in-app plan purchases. play.google.com Tool · How Founders Use AI ChatGPT on Google Play OpenAI
  14. The official Claude app, with more than 50 million downloads. play.google.com Tool · How Founders Use AI Claude by Anthropic on Google Play Anthropic
  15. The official Perplexity app, with more than 10 crore (100 million) downloads. play.google.com Tool · How Founders Use AI Perplexity on Google Play Perplexity AI
  16. Meta's standalone assistant app, with more than 100 million downloads; the same assistant is built into WhatsApp. play.google.com Tool · How Founders Use AI Meta AI on Google Play Meta
  17. Anthropic's course on working with AI well: when to delegate, how to describe a task, and how to judge what comes back. anthropic.skilljar.com Course · How Founders Use AI AI Fluency: Framework & Foundations Anthropic Academy
  18. A free online introduction to AI for non-experts with no complicated maths or programming, plus Building AI for those who want... elementsofai.com Course · How Founders Use AI Elements of AI MinnaLearn and the University of Helsinki
  19. A self-learning programme in two parts, AI Aware and AI Appreciate, that takes about four hours and is available in 11 Indian... ai-for-all.in Course · How Founders Use AI AI For All Digital India, CBSE and Intel
  20. Perplexity's AI browser for Mac, Windows, iPhone and Android, for research and errands across tabs. perplexity.ai Tool · How Founders Use AI Comet Perplexity
  21. A digital worker that browses, researches and builds in the background, including recurring tasks. perplexity.ai Tool · How Founders Use AI Perplexity Computer Perplexity
  22. Manus's rebuilt agent that makes sites, decks and videos on its own cloud computer and runs automations. manus.im Article · How Founders Use AI Introducing Manus 2.0 Manus
  23. Zerodha's own guide to its free Kite MCP, which lets Claude read your Zerodha portfolio and answer questions about it, with... zerodha.com Article · How Founders Use AI Connect your Zerodha account to AI assistants with Kite MCP Zerodha
  24. The regulator's searchable list of registered investment advisers, 1,077 as of 9 November 2026: check any adviser here before... sebi.gov.in Tool · How Founders Use AI SEBI register of Investment Advisers SEBI

Show the next 24

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