Khan Academy
freeEntirely free nonprofit, beginner-focused
No card ever. Beginner onboarding; less depth than freeCodeCamp/TOP.
| URL | https://khanacademy.org |
| Tier | free |
| Relevance | low |
| Last active signal | 2026-03 CS-Python Unit 7 |
| Verified alive | yes |
| Category | Learning |