Startup idea databases

Places to find a business idea with evidence behind it: verified revenue, failed startups worth rebuilding and fast-growing trends, plus a free skill that stress-tests the one you pick.

8 sites, checked Oct 20–22, 2026.

Startups.RIP, one of the 8 sites here. Screenshot of its homepage, Oct 20, 2026.

What it costs to ship

Cheapest start: $0 on the free tiers of Lovable, Supabase and Vercel. Paid plans start at $25/mo (Lovable Pro), $25/mo (Supabase Pro) and $20/mo plus usage (Vercel).

Lovable (opens in a new tab)
Builds the first version from a prompt
Limited free tier$25/mo (Pro, 100 monthly credits)Pricing checked · Oct 19, 2026 · source for Lovable's pricing (opens in a new tab)
Supabase (opens in a new tab)
Database, sign-in and storage
Generous free tier$25/mo ProPricing checked · Oct 15, 2026 · source for Supabase's pricing (opens in a new tab)
Vercel (opens in a new tab)
Hosts the site
Generous free tier$20/mo plus usagePricing checked · Oct 15, 2026 · source for Vercel's pricing (opens in a new tab)

The 8 sites

TrustMRR (opens in a new tab)
trustmrr.com
A database of startups whose revenue is verified through Stripe and other payment providers, plus a marketplace for buying and selling them.
Why it’s here Its homepage says 200K people browse it each month. Source for TrustMRR (opens in a new tab)
FreeFree to browsePrice checked · Oct 20, 2026 · source for TrustMRR’s pricing (opens in a new tab)
Startups.RIP (opens in a new tab)
startups.rip
Post-mortems of 1,738+ dead or acquired Y Combinator startups, each with a plan for rebuilding it today.
Why it’s here Launched on Product Hunt as “Rebuild 1,738+ dead YC startups with AI.” Source for Startups.RIP (opens in a new tab)
Free tierFree reports. Pro: $15/mo billed annuallyPrice checked · Oct 20, 2026 · source for Startups.RIP’s pricing (opens in a new tab)
ProvenStartups (opens in a new tab)
provenstartups.com
1,232 startup ideas graded by how solid their revenue evidence is, with build effort and specs you can paste into Claude Code.
Why it’s here It says it added 826 ideas in the last 30 days. Source for ProvenStartups (opens in a new tab)
Free tierFirst 50 ideas free. Membership: $5/moPrice checked · Oct 20, 2026 · source for ProvenStartups’s pricing (opens in a new tab)
Starter Story (opens in a new tab)
starterstory.com
Case studies of real, profitable businesses, with revenue, growth channels and the tools they use.
Why it’s here It says its newsletter is read by 200,000+ founders. Source for Starter Story (opens in a new tab)
Free tierCase-study database free with email signup. Paid plans: check sitePaid price not confirmed
IdeaBrowser (opens in a new tab)
ideabrowser.com
One researched startup idea every morning, with market research, founder fit and trend data.
Why it’s here From Greg Isenberg. A launch-pricing offer runs until October 24. Source for IdeaBrowser (opens in a new tab)
Free tierIdea of the Day free. Pro: check sitePaid price not confirmed
Exploding Topics (opens in a new tab)
explodingtopics.com
A trend database, now part of Semrush, that flags fast-growing topics, products and startups before they peak.
Why it’s here 14 Hacker News stories link to it. Source for Exploding Topics (opens in a new tab)
Free trialFrom $39/mo, with a 7-day free trialPrice checked · Oct 20, 2026 · source for Exploding Topics’s pricing (opens in a new tab)
Best of Show HN (opens in a new tab)
bestofshowhn.com
A ranked monthly list of the top Show HN launches, so you can see what builders are shipping right now.
Why it’s here The October 2026 list is live and updating. Source for Best of Show HN (opens in a new tab)
FreeFreePrice checked · Oct 20, 2026 · source for Best of Show HN’s pricing (opens in a new tab)
Founder Skill (opens in a new tab)
github.com
Eleven Claude skills that stress-test a business idea before you spend money: a board, a competitor scan, a simulated buyer panel, pricing, CFO numbers, a launch plan and a business plan with a verdict.
Why it’s here Find an idea in the databases above, then test it here before you build. Source for Founder Skill (opens in a new tab)
Note Needs no API key; its tools need Python 3.8+. The board applies frameworks from published books, including Walter Isaacson's biography of Steve Jobs, and doesn't speak as him. The buyer panel is simulated, not real customers.
FreeFree (MIT)Price checked · Oct 22, 2026 · source for Founder Skill’s pricing (opens in a new tab)

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