# Castor EDC vs Viedoc

**Leader by Vioscale score:** Viedoc

| Attribute | Castor EDC | Viedoc |
|---|---|---|
| **Vioscale score** | 28 (41% (low)) | 59.8 (60% (medium)) |
| deployment.options | `{"cloud":true}` | `{"cloud":true}` |
| description.long | Castor provides an integrated platform combining electronic data capture, patient-reported outcomes collection, and electronic consent, with AI-powered extraction from source documents and mandatory human verification before data finalization. | A comprehensive electronic data capture and trial management system that enables organizations to collect, manage, and monitor clinical trial data with built-in regulatory compliance across multiple countries. Supports patient engagement, decentralized trials, randomization, and supply management. |
| features.capabilities | `{"iso_27001":true,"pricing_model":"enterprise_annual_contract","edc_electronic_data_capture_forms":true,"hipaa_baas_business_associate_agreement":true,"decentralized_clinical_trial_dct_remote_monitoring":true}` | `{"iso_27001":true,"soc2_type_ii":true,"pricing_model":"per_study_tier","edc_electronic_data_capture_forms":true,"adverse_event_and_safety_reporting":true,"fda_21_cfr_part_11_electronic_signatures":true,"etmf_electronic_trial_master_file_storage":true,"randomization_and_trial_supply_management_irts":true,"decentralized_clinical_trial_dct_remote_monitoring":true}` |
| integrations.count | 1 | 2 |
| integrations.list | `[{"name":"EHR systems"}]` | `[{"name":"BSI CTMS"},{"name":"MedDRA"}]` |
| market.availability | `{"hqCountry":"NL","primaryMarkets":["US","GB","EU"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"primaryMarkets":["EU","US"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"web":true}` | `{"web":true}` |
| pricing | `{"type":"quote","summary":"Custom pricing based on study scope, therapeutic area, endpoints, and localization requirements","freeTier":false,"sourceUrl":"https://www.castoredc.com/pricing/","retrievedAt":"2026-08-21T16:40:03.554Z"}` | `{"type":"quote","summary":"Study-based licensing with unlimited user seats; no per-user fees; transparent pricing requires quote","freeTier":false,"sourceUrl":"https://www.viedoc.com/buyers-guides/best-edc-software-transparent-pricing-cros","retrievedAt":"2026-08-25T21:49:32.187Z"}` |
| pricing.free_tier | no | no |
| pricing.model | quote | quote |
| pricing.price_level | unknown | unknown |
| pricing.transparent | no | yes |
| reliability.sla_pct | - | 99.99 |
| security.disclosure_policy | yes | - |
| security.gdpr | yes | yes |
| security.hipaa | yes | yes |
| security.iso27001 | yes | yes |
| security.soc2 | - | yes |

## Capabilities (Clinical Trial Management)

| Capability | Castor EDC | Viedoc |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Fda 21 cfr part 11 electronic signatures | - | ✓ |
| Edc electronic data capture forms | ✓ | ✓ |
| Etmf electronic trial master file storage | - | ✓ |
| Patient recruitment CRM and screening | - | - |
| Randomization and trial supply management irts | - | ✓ |
| Clinical investigator payment and stipend tracking | - | - |
| Decentralized clinical trial dct remote monitoring | ✓ | ✓ |
| Adverse event and safety reporting | - | ✓ |
| HIPAA baas business associate agreement | ✓ | - |
| SOC2 type ii | - | ✓ |
| ISO 27001 | ✓ | ✓ |
| Pricing model | Enterprise annual contract | Per study tier |

*Source: Vioscale. Generated 2026-09-01T14:32:19.332Z. "-" = undocumented, not absent.*