Hardest to clone

Ranked by our composite score — technical build difficulty PLUS business moat. High means you can't just copy it and out-compete it: either the engineering is brutal, the moat is a fortress, or both.

score = build difficulty + moat — can you copy it and win?

1. 1Lemon Squeezymoat Fortress10
2. 2Gumroadmoat Strong10
3. 3Roam Researchmoat Moderate10
4. 4Missivemoat Moderate10
5. 5Front (front.com)moat Strong10
6. 6Superhumanmoat Fortress10
7. 7Todoistmoat Fortress10
8. 8Basecamp (37signals)moat Fortress10
9. 9Polsiamoat Moderate10
10. 10GitHubmoat Fortress10
11. 11Bitbucket (Atlassian)moat Fortress10
12. 12GitLab.com (marketing site + DevSecOps platform)moat Fortress10
13. 13DigitalOceanmoat Fortress10
14. 14Netlifymoat Fortress10
15. 15Fly.iomoat Fortress10
16. 16Render.commoat Fortress10
17. 17Railwaymoat Strong10
18. 18Neon (neon.tech)moat Fortress10
19. 19PlanetScalemoat Fortress10
20. 20WorkOSmoat Fortress10
21. 21Auth0 (by Okta)moat Fortress10
22. 22Emergent.shmoat Fortress10
23. 23LaunchDarklymoat Fortress10
24. 24PagerDutymoat Fortress10
25. 25Grafana Labsmoat Fortress10
26. 26Datadogmoat Fortress10
27. 27Sentry.iomoat Fortress10
28. 28Fullstorymoat Fortress10
29. 29Hotjarmoat Fortress10
30. 30Segment (Twilio Segment) — Customer Data Platformmoat Fortress10