Business ideas, with receipts

Uber × laundry.
Has anyone built it?

Two real companies in. One new business out, with who already tried it, what each parent does, and a 48-hour demand checkSource 2: 48-hour demand check.

Top scored

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Mashups

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Browse by company

Every guide ends in one

Four verdicts. One score.

How scoring works
Open lane

No live company found doing it. Room to build.

Crowded

Several live players. You need a sharper angle.

Already exists

A company already does this. We show the gap.

Every Thursday

5 crossovers, checked.1

Two real companies, one new business, and who already tried it. Free.

Which lists should store this address?

How we check

Methodology
  1. Find parents

    Two real companies, named only to identify them.

  2. Check who tried

    Live, dead, or funded, each with a source.

  3. Score from signals

    Counted signals only. Weights are public.

Sources

  1. 1. The 5 in the Thursday list is the issue length, not a count of pages on this site. Recorded in the project brief on 18 Oct 2026.
  2. 2. The 48-hour demand check runs before a build plan. The duration is a method rule, not a measured result. Recorded in the project brief on 18 Oct 2026.
  3. 3. The score runs to 100. Evidence is 3 for each fetched fact, capped at 25. Mechanism fit is 5 for each counted mechanism, capped at 20. Demand is 4 for each counted signal, capped at 20. Openness starts at 20 and loses 5 for each verified direct match, and it stops at 0. Build ease starts at 15 and loses 5 for each sourced hard requirement, and it stops at 0, and only when that review is recorded. A page under 50, and any thin page, is left out of the index. Weights are this site's rule, recorded in the project specification on 19 Oct 2026. A judgment step has to agree when the two parents are checked in both orders.