The Odin Project
freeFully free open-source full-stack curriculum
No premium tier ever. Ruby on Rails + JS/Node paths. Emphasizes real dev workflows (Git, terminal, local setup).
| URL | https://theodinproject.com |
| Tier | free |
| Relevance | high |
| Last active signal | 2026-06 active repos, 5K+ contributors |
| Verified alive | yes |
| Category | Learning |