AtCoder vs Greenhouse vs HackerRank vs Notion
| Attribute | ||||
|---|---|---|---|---|
| Category | Education & Learning | HR & Recruiting | HR & Recruiting | Productivity & Collaboration |
| Pricing | Free tier | Paid | Paid | Free tier |
| Starting price | Free | — | — | $10 |
| Free tier | Yes | No | No | Yes |
| Free trial | No | Yes | No | Yes |
| Deployment | — | — | — | — |
| API available | Unknown | Unknown | Unknown | Yes |
| Platforms | — | — | — | — |
| Certifications | — | — | — | — |
| Integrations | — | 3 | — | 18 |
| Company | — | — | Founded 2012 | Founded 2013 |
| Feature attributes | ||||
| Sso Saml | — Unknown | — Unknown | — Unknown | ✓ Yes |
| Rbac | — Unknown | — Unknown | — Unknown | — Unknown |
| Mobile App | — Unknown | — Unknown | — Unknown | — Unknown |
| Webhooks | — Unknown | — Unknown | — Unknown | ✓ Yes |
| Data Export | — Unknown | — Unknown | — Unknown | — Unknown |
| Docs Editor | — Unknown | — Unknown | — Unknown | — Unknown |
| Real Time Collaboration | — Unknown | — Unknown | — Unknown | ✓ Yes |
| Storage Included | — Unknown | — Unknown | — Unknown | — Unknown |
| Offline Access | — Unknown | — Unknown | — Unknown | — Unknown |
| Templates | — Unknown | — Unknown | — Unknown | ✓ Yes |
Also consider
Unknown values show as “Unknown”/“—”. Nothing is inferred — see each tool page for sources.