What Is Chrome Goldmine?

Updated

Chrome Goldmine is a paid database of 9,656 expired Chrome extensions, packaged as a Notion workspace plus CSV, aimed at indie developers looking for extensions to rebuild. Each listing includes historical user counts, category, rebuild difficulty, why the extension died, current competitors, and a step-by-step rebuild plan. It costs $23.20 during a launch discount for the first 100 buyers, then $29, with a 30-day money-back guarantee and lifetime quarterly updates. It is not a tool for building extensions — it is research you buy before you decide what to build.

What you actually get

The product is a research database, not software. According to the site, each of the 9,656 listings covers:

  • Historical users — how many people had installed the extension before it died
  • Category — one of 6 categories (sample rows show Productivity, Accessibility, Customization, Shopping, Writing, and New Tab)
  • Rebuild difficulty — rated Low, Medium, or High
  • Why it died — for example "MV3" (Manifest V3 migration) or "Abandoned"
  • Who competes now — current alternatives in the space
  • A step-by-step rebuild plan — the site describes a 12-point report per listing
  • Estimated monthly revenue — a range, e.g. $500–$1,600/mo

Delivery is an instant Notion workspace plus a CSV export, with lifetime quarterly updates.

The sample data tells you what a listing looks like

The site publishes 20 live rows out of 9,656 without requiring signup. A few examples:

Name Historical users Category Difficulty Died because Est. monthly
Session Stack 48,200 Productivity Low MV3 $500–$1,600
Tab Suspender Reloaded 91,400 Productivity Medium MV3 $600–$1,800
Reading Mode Clean 64,100 Accessibility Low Abandoned $400–$1,200
Coupon Clipper 40,500 Shopping Medium Abandoned $800–$2,400
Grammar Lite 36,700 Writing High MV3 $1,000–$3,000

One full report (Session Stack) is shown in the sample; the remaining 9,636 rows unlock at checkout. The revenue figures are the seller's estimates, not verified earnings — treat them as a starting point for your own validation.

Who it fits, and who it doesn't

It fits you if:

  • You're an indie developer or solo maker choosing what to build next
  • You want demand signals (historical installs) rather than guessing at ideas
  • You're comfortable rebuilding a Chrome extension in Manifest V3
  • You'd rather pay once for research than spend weeks scanning the Web Store yourself

It doesn't fit you if:

  • You want a done-for-you extension or code — this is research only
  • You need guaranteed revenue; the estimates are ranges, not promises
  • You're not willing to do the build and launch work yourself

The site says the database is used by 50+ indie makers.

Pricing and what the money buys

  • $23.20 — 20% launch discount, limited to the first 100 buyers
  • $29 — standard price after that
  • No subscription
  • 30-day money-back guarantee, described as "no questions"
  • Lifetime quarterly updates included

The site does not state whether the Notion workspace requires a paid Notion plan, so check that separately if you don't already use Notion.

How to evaluate it before buying

  1. Open the free sample (20 rows plus one full report) — no signup required.
  2. Pick 2–3 listings in categories you know and check whether the "who competes now" and rebuild plans match what you'd find on your own.
  3. Compare the historical user counts against current Web Store install numbers for the live competitors.
  4. If the sample research saves you meaningful time, the full set is the same format at scale.

The core decision is simple: if you're picking your next extension and want pre-gathered demand data, the sample shows you the quality bar. If the sample rows don't tell you anything you couldn't find yourself in an afternoon, the full database likely won't change that.