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Hackdemo — Challenges & Contests | Hackdemo.com — 18 websites ranked by shared content topics, category and on-page relevance.

Each result shows its full tech stack, contacts and AI-policy — not just a name · Browse all sites in Startups →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
ctochallenge.com ↗	68 match 1 shared topics	CtoChallenge.com — Take the Challenge	en	startups	robotsllmsaihumans	emailphone	none
chiefchallenge.com ↗	68 match 1 shared topics	ChiefChallenge.com — Take the Challenge	en	startups	robotsllmsaihumans	emailphone	none
associationchallenge.com ↗	67 match 1 shared topics	AssociationChallenge.com — Take the Challenge	en	startups	robotsllmsaihumans	emailphone	none
ntt-startupchallenge.com ↗	67 match 1 shared topics	NTT Startup Challenge 2026	en	startups	robotsllmsaihumans	emailphone	none
100startupschallenge.com ↗	66 match 1 shared topics	100 Startups Challenge	en	startups	robotsllmsaihumans	emailphone	none
100startupschallange.com ↗	66 match 1 shared topics	100 Startups Challenge	en	startups	robotsllmsaihumans	emailphone	partial · 8
chatsurvey.com ↗	66 match 1 shared topics	ChatSurvey.com — Chat Surveys & Insights \| ChatSurvey	en	startups	robotsllmsaihumans	emailphone	none
egneolab.com ↗	65 match 1 shared topics	Egneolab: Innovative Solutions for Everyday Challenges \| EGneoLab	en	startups	robotsllmsaihumans	emailphone	none
chefsurvey.com ↗	65 match 1 shared topics	ChefSurvey.com — Chef Surveys & Insights \| ChefSurvey	en	startups	robotsllmsaihumans	emailphone	none
chilisurvey.com ↗	65 match 1 shared topics	ChiliSurvey.com — Chili Surveys & Insights \| ChiliSurvey	en	startups	robotsllmsaihumans	emailphone	none
24hrstartup.com ↗	65 match 1 shared topics	The 24 Hour Startup Challenge	en	startups	robotsllmsaihumans	emailphone	none
icebergindex.org ↗	64 match 1 shared topics	The Titanic Effect, a book about the startup challenge	en	startups Squarespace Squarespace Commerce	robotsllmsaihumans	emailphone	none
hottestkitchenchallenge.com ↗	64 match 1 shared topics	Hottest Kitchen Entrepreneur Challenge – Growing the next crop of food and beverage entrepreneurs	en	startups WordPress	robotsllmsaihumans	emailphone	none
picsurvey.com ↗	64 match 1 shared topics	PicSurvey.com — Pic Surveys & Insights \| PicSurvey	en	startups	robotsllmsaihumans	emailphone	none
piesurvey.com ↗	64 match 1 shared topics	PieSurvey.com — Pie Surveys & Insights \| PieSurvey	en	startups	robotsllmsaihumans	emailphone	none
milksurvey.com ↗	64 match 1 shared topics	MilkSurvey.com — Milk Surveys & Insights \| MilkSurvey	en	startups	robotsllmsaihumans	emailphone	none
memorysurvey.com ↗	64 match 1 shared topics	MemorySurvey.com — Memory Surveys & Insights \| MemorySurvey	en	startups	robotsllmsaihumans	emailphone	none
chicagonvc.com ↗	64 match 1 shared topics	New Venture Challenge - Polsky Center for Entrepreneurship and Innovation	en	startups WordPress	robotsllmsaihumans	emailphone	none

How the match score works

Each match is a 0–100 similarity score — the higher it is, the more two sites resemble one another. It’s computed automatically from our own crawl data (never from what a site says about itself) by combining several independent signals, so a high score means several of them point the same way:

shared topics how many of the same fine‑grained content topics (IAB sub‑categories) both sites cover — the main signal.
same category whether they sit in the same business / industry category.
content & title how closely their titles and page descriptions line up in wording and meaning.

No single signal decides the result — they’re blended together. Treat the score as a way to rank candidates rather than an absolute percentage; the chips on each result show which signals contributed.