| Price from | — | $3.50/mo |
| Free plan | — | — |
| Free trial | Yes | Yes |
| Open source | — | — |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| API | — | Yes |
| Self-hosted | — | Yes |
| Plans published | 1 | 3 |
| Spec score · Multi-Factor Authentication Software | 8.7 (#3) | 7.4 (#37) |
| Authentication | Users provide a one-time passcode in addition to their normal Active Directory password. | Helix uses zero-knowledge proofs to verify a user-device pair without transmitting the private key or revealing the underlying credential data. |
| Evaluation | The homepage offers a free evaluation but does not state its duration. | ZKX invites participants to an exclusive 90-day trial program. |
| Headquarters | Springfield, Illinois, USA | Victor, New York, United States |
| Support | The base domain license includes up to five hours of support for one year, less any presales support used. | The pricing page lists Bronze support at 15% of annual license value, with a two-business-day response, eight hours a day five days a week, and 10 tickets per year. |