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Startup ideas with revenue receipts, reverse-engineered from founder interviews.

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TierT1T2T3EvidenceVerifiedFounderCreatorUnprovenEvergreenWindow
Ecosystem Tool ↓
AI ContentAI E-commerceAI ServiceAI WebsiteConsumer AppDigital PublishingDirectory SiteEcosystem ToolPlatform PluginSaaSScale ReferenceSimple Tool⚠️ Cautionary Tale
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RevenueIdeaCategory · Evidence · Difficulty
#1
$500K+T2
Extended Brain (Notion Template)
One template, $500K in 2 years: a free slice as the bait, YouTube content as the fishing boat
Ecosystem ToolT2
Ecosystem Tool
#2
—PROT3
First Mover in an Emerging Shopify Market (Porto, Portugal)
Eighteen months ago Portugal had about three Shopify Plus brands and no Shopify staff covering the country. One agency lobbied the platform to staff it, became the local Plus partner, and now runs 32+ Plus accounts as the market grew towards forty.

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Ecosystem ToolPROT3
Ecosystem Tool
#3
$500T2
Feather.so
Write in Notion, publish an SEO-optimised blog — a fourth-attempt product that hit $500 MRR two months after switching on payments, built by a 24-year-old in India who first survived a $10,000 hosting bill
INEcosystem ToolT2
INEcosystem Tool
#4
Millions in an…T2
Smart Bear
A code review tool bolted onto version control systems, sold to enterprises with no salespeople — millions in revenue at roughly $1M per employee, and a founder who still woke at 3am panicking about payroll because none of it was recurring
USEcosystem ToolT2
USEcosystem Tool
#5
$100/moT2
WP Engine
Before it had a name, a slide deck, an employee or a server, 30-40 people had already agreed to pay $50/month for it — and annual prepay later gave it 3x monthly cash flow and what the founder calls an infinite marketing budget
USEcosystem ToolT2
USEcosystem Tool