Hardest to clone

The sites a prompt can't reproduce — ranked. Real backends, deep moats, fortress businesses. Click any to see the teardown.

1. 1Cal.commoat Strong10
2. 2Notionmoat Fortress10
3. 3Vercelmoat Fortress10
4. 4Linearmoat Fortress10
5. 5Atlassian.commoat Fortress10
6. 6Uber (uber.com marketing site)moat Fortress10
7. 7Railwaymoat Fortress10
8. 8Clerkmoat Fortress10
9. 9PostHogmoat Fortress10
10. 10Cloudflaremoat Fortress10
11. 11Stripemoat Fortress10
12. 12Y Combinator (ycombinator.com)moat Fortress10
13. 13Google Searchmoat Fortress10
14. 14ElevenLabsmoat Fortress10
15. 15YouTubemoat Fortress10
16. 16Brightidea (marketing site)moat Strong10
17. 17Polsiamoat Strong10
18. 18Apple.commoat Fortress10
19. 19Amazonmoat Fortress10
20. 20Facebook.commoat Fortress10
21. 21Ancestry.commoat Fortress10
22. 22Index.humoat Fortress10
23. 23Upwage (AI Interview Platform)moat Fortress10
24. 24Hacker Newsmoat Strong9
25. 25Mint (Intuit)moat Strong9
26. 26Awwwardsmoat Strong9
27. 27WonderTwinmoat Moderate9
28. 28Upwage (AI Interview Platform)moat Strong9
29. 29Zextrimoat Moderate9
30. 30Hacker Newsmoat Fortress9