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.
- The Indus app listing: chat in Hindi, English, Tamil or a mix, tap the mic to speak, and hosting in India. play.google.com Tool · How Founders Use AI Indus by Sarvam Sarvam AI (Google Play) In 3 answers
- OpenAI's Codex plan page: Free for quick tasks, Go at $8, Plus at $20 (web, CLI, IDE and iOS), Pro from $100 in $100, $200 and... learn.chatgpt.com Tool · How Founders Use AI Codex pricing OpenAI In 3 answers
- Microsoft 365 Personal at ₹6,899 a year or ₹689 a month, with Copilot in the PowerPoint, Word and Excel desktop apps. microsoft.com Tool · How Founders Use AI Compare Microsoft 365 plans (India) Microsoft In 3 answers
- Cuts long videos and podcasts into captioned vertical clips: free plan, Starter $15 a month, Pro $29. opus.pro Tool · How Founders Use AI OpusClip pricing OpusClip In 3 answers
- An Indian app with two AI teammates: Tara plans a month of posts, makes images and reels and runs Meta ads; Ved answers... interakt.shop Tool · How Founders Use AI SOLO by Interakt: an AI business team app for small businesses Interakt (Jio Haptik) In 3 answers
- Marketing writing with brand voice for teams: Pro $59 a month billed yearly or $69 monthly, with a 7-day free trial. jasper.ai Tool · How Founders Use AI Jasper pricing Jasper In 3 answers
- Hands-on picks with prices: ChatGPT best overall (paid from Go at $8 a month), Nano Banana for Google users, Midjourney for... zapier.com Article · How Founders Use AI The 6 best AI image generators in 2026 Zapier (Harry Guinness) In 3 answers
- Free at 10,000 credits a month; Starter $6 a month with a commercial licence and instant cloning; Creator $22 with professional... elevenlabs.io Tool · How Founders Use AI ElevenLabs pricing ElevenLabs In 3 answers
- A free browser photo editor with layers, masks and blending that opens and saves Photoshop's PSD files, with nothing to install. photopea.com Tool · How Founders Use AI Photopea Photopea In 3 answers
- Workspace in rupees, billed monthly: Business Starter Rs 270 a user a month with Gemini in Gmail and company data kept out of... workspace.google.com Tool · How Founders Use AI Google Workspace pricing (India) Google In 3 answers
- Business plans in rupees: Microsoft 365 Business Standard with Copilot Rs 1,955 a user a month paid yearly, and the Copilot... microsoft.com Tool · How Founders Use AI Microsoft 365 Copilot pricing for business (India) Microsoft In 3 answers
- YouTube's own page listing every language automatic captions cover, including Hindi, Bengali, Gujarati, Kannada, Malayalam,... support.google.com Article · How Founders Use AI Use automatic captioning YouTube Help In 3 answers
- Edge, the default PDF reader on Windows: highlight, mark up, add text and save, plus Copilot summaries and translation in a... microsoft.com Tool · How Founders Use AI Microsoft Edge PDF reader Microsoft In 3 answers
- A free professional editor for editing, colour, effects and audio in one app; the paid Studio version is listed at $236. blackmagicdesign.com Tool · How Founders Use AI DaVinci Resolve Blackmagic Design In 3 answers
- Google's guide to Magic Eraser, Unblur, portrait blur and suggested enhancements, with the device requirements (at least 3 GB... support.google.com Article · How Founders Use AI Edit your photos (Android) Google Photos Help In 3 answers
- The fastest way to mine real customer complaints and comparisons about your competitors, the negative reviews are a free... G2 Tool · ongoing · Starting Up G2, software reviews and competitive comparison G2 In 2 answers
- Best-in-class visual builder for pixel-precise marketing sites and CMS-driven content, used by 300k+ teams. Ideal for a landing... webflow.com Tool · platform · Starting Up Webflow, Visual Web Design Platform Webflow In 2 answers
- An AI-chat-to-app builder that turns a plain-English prompt into a working full-stack app fast, the fastest path to a prototype... lovable.dev Tool · platform · Starting Up Lovable, AI App Builder Lovable In 2 answers
- India-specific advice written by an Indian technical founder, addressing the real competition for engineering talent in the... Inc42 Article · ~10 min read · Starting Up How Can Indian Startups Hire The Right Technical Talent Parminder Singh (Hansel.io) In 2 answers
- The definitive text on how strong product teams discover and deliver products customers love, from the most cited voice in... Silicon Valley Product Group Book · ~370 pages · Starting Up INSPIRED: How to Create Tech Products Customers Love (2nd Ed.) Marty Cagan In 2 answers
- A grounded, India-specific look at how well-known desi brands actually got named, a better cultural template for Indian... YourStory Article · 7 min read · Starting Up From Nykaa to Zerodha: the fascinating origins of India's favourite brand names YourStory In 2 answers
- A real Indian case study of brand and trust built with zero ad spend, proof that product, transparency and word of mouth beat a... Inc42 Article · 5 min read · Starting Up Zerodha now has over 1.6 Cr users without advertising Inc42 Staff In 2 answers
- The original, still-used test for whether you have product-market fit, from the person who coined 'growth hacking' and grew... Startup Marketing / GrowthHackers Article · ~10 min read · Starting Up The Sean Ellis Product-Market Fit Survey (40% Test) Sean Ellis In 2 answers
- The definitive explanation of why every marketing channel decays over time, from an a16z general partner who wrote 650+ essays... andrewchen.com Article · ~8 min read · Starting Up The Law of Shitty Clickthroughs Andrew Chen In 2 answers
The hubs
Starting Up
Find an idea, validate it, build, and land your first customers.
GTM
Go-to-market, from breaking in to how the best teams do it.
D2C
Building a direct-to-consumer brand, India-first.
Wealth
Paying yourself, ESOPs, secondaries, and de-risking founder wealth.
How Founders Use AI
How founders actually put AI to work, mapped topic by topic.
Glossary
Plain-language definitions of the startup and VC terms you'll hit.
eChai Partner Brands
The partnership →