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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
$10MPROT2
Gray Falcon — getting unauthorised resellers off marketplaces, for big brands
Three founders in Utah built a recurring-revenue service that legally delists the knock-off and grey-market sellers eating a brand's marketplace listings — just under $10M ARR, growing well over 40% a year, profitable, and now turning away inbound private equity

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USEcosystem ToolPROT2
USEcosystem Tool
#3
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
#4
$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