
buildthatextension
Get access to 9500+ expired Chrome extensions with over 500 users each. Perfect for developers and indie hackers looking for proven ideas.

buildthatextension
Get access to 9500+ expired Chrome extensions with over 500 users each. Perfect for developers and indie hackers looking for proven ideas.
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Revenue is verified with
DodoPayment API key.Last updated: Oct 5, 2026, 10:17 PM
Get access to 9500+ expired Chrome extensions with over 500 users each, perfect for developers and indie hackers looking for proven ideas.
Discover opportunities with validated ideas and save research time by accessing a curated database of expired extensions.
Audience
Developers and indie hackers
Domain Rating
buildthatextension.com
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Tech stack
Backend
Screenshot
buildthatextension.com
"Btw Already made $397 (revenue before gumroad cut) as I was used to sell with Gumroad now just shifted to Dodopayments so revenue would be bit less."
Hiren Thakkar
Founder of buildthatextension
Product updates
More startups for sale
View MarketplaceBrevik
Most people know what they want from AI but not how to ask for it. Brevik fixes the asking. You start with whatever you have — a one-line idea, a screenshot, or a URL. Brevik reads it, works out what's missing, and asks one short question at a time: who it's for, how it should be structured, what it must avoid. Every answer visibly improves a quality score computed from the fields your prompt contains — not invented by a model. Stop whenever it's good enough, then copy the finished prompt into
Revenue (30d)
$490
Asking Price
$4.9k
Multiple
0.8x
Calerto
Calerto is the meeting alarm app that turns your calendar invites into loud, impossible-to-miss alarms — so you're always on time.
Revenue (30d)
$172
Asking Price
$3k
Multiple
1.5x
AI Virtual Staging
AI Virtual Staging lets real estate agents turn empty-room photos into realistic, professionally furnished property images in seconds. Upload a photo, choose a room style, and get listing-ready visuals without hiring a stager or renting furniture. AI Virtual Staging uses a credit-based model where users pay for AI-generated virtual staging images. Users can purchase credits as needed, making it affordable for real estate agents and photographers who only need staging for individual property list
Revenue (30d)
$196
Asking Price
$4.5k
$4k
Multiple
1.7x
AppAlchemy
AppAlchemy is an AI powered no code builder that turns a text description into a working iOS and Android app. Users describe their idea and iterate in chat without writing code. It also includes the original app design tool at design.appalchemy.ai with its own paying subscriber base. Stack: web app, Supabase and Firebase backends, Stripe billing, LLM based generation. Two products, one Stripe account, 300 paying subscribers, 90%+ profit margins, no employees.
Revenue (30d)
$5.8k
Asking Price
$28k
Multiple
0.4x
Vid.AI
Turn any idea or script into ready-to-post videos that get views. AI generates voiceovers, visuals, and edits – all in minutes, no skills needed.
Revenue (30d)
$40k
Asking Price
$1.5M
Multiple
3.1x
UpLinked B.V.
UpLinked is an AI web app for B2B coaches, consultants and agencies, with a live iOS app and Android in review. It analyses your LinkedIn profile, business, offer and goals, turns that into a 12-week content strategy, then writes posts in your own tone of voice, generates carousels and visuals, plans them and publishes straight to LinkedIn. It learns from your analytics with every post. The goal is not likes, but leads and clients.
Revenue (30d)
$3k
Asking Price
$28k
$19k
Multiple
0.5x