Link copied to clipboard # Castor vs Viedoc Comparison - What are their main differences? Share [ Export ](/compare/castor-edc-castor/viedoc/export.csv) CastorViedoc[+ Add Product](#) Pricing **Castor** Free Trial No pricing available **Viedoc** Free Trial **Contact Us** 1 Single study · Single Study Model **Pricing Insights** from reviews Time to Implement **Castor** 2 months Based on 13 responses **Viedoc** 2 months Based on 22 responses Return on Investment **Castor** 31 months Based on 8 responses **Viedoc** 9 months22 months sooner Based on 18 responses Perceived Cost **Castor** $$$$$ **Viedoc** $$$$$ Average Discount **Castor** 15%7% more **Viedoc** 8% **Pros & Cons** from reviews **Castor** [ Ease of Use (5) ](https://www.g2.com/products/castor-edc-castor/reviews?filters%5Bsentiment_snippet%5D=1934706&qs=pros-and-cons#reviews)[ Navigation Ease (3) ](https://www.g2.com/products/castor-edc-castor/reviews?filters%5Bsentiment_snippet%5D=2220077&qs=pros-and-cons#reviews)[ Data Management Issues (1) ](https://www.g2.com/products/castor-edc-castor/reviews?filters%5Bsentiment_snippet%5D=2219851&qs=pros-and-cons#reviews)[ Inadequate Reporting (1) ](https://www.g2.com/products/castor-edc-castor/reviews?filters%5Bsentiment_snippet%5D=2219876&qs=pros-and-cons#reviews) **Viedoc** [ Ease of Use (38) ](https://www.g2.com/products/viedoc/reviews?filters%5Bsentiment_snippet%5D=1173599&qs=pros-and-cons#reviews)[ User Interface (31) ](https://www.g2.com/products/viedoc/reviews?filters%5Bsentiment_snippet%5D=1173871&qs=pros-and-cons#reviews)[ Slow Performance (13) ](https://www.g2.com/products/viedoc/reviews?filters%5Bsentiment_snippet%5D=1173293&qs=pros-and-cons#reviews)[ Difficulty (11) ](https://www.g2.com/products/viedoc/reviews?filters%5Bsentiment_snippet%5D=1173402&qs=pros-and-cons#reviews) Integrations **Castor** Not enough data **Viedoc** [ ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_2ac0e7b10e1efb64107026cb2b241d53/azure-pipelines.jpg "Product Avatar Image") Azure Pipelines ](https://www.g2.com/products/azure-pipelines/reviews)[ ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_c3e4922bb6835a32854c1dead2cda2bb/base-sas.jpg "Product Avatar Image") Base SAS ](https://www.g2.com/products/base-sas/reviews)[ ![Product Avatar Image](https://images.g2crowd.com/uploads/vendor/image/2012256/large_detail_77f4a209d09aeb008ef47a6125db9cb2.jpg "Product Avatar Image") SimpleTrials CTMS/eTMF ](https://www.g2.com/products/simpletrials-ctms-etmf/reviews)[ View all ](https://www.g2.com/products/viedoc/integrations) Screenshots **Castor** ![Castor screenshot](https://images.g2crowd.com/cdn-cgi/image/width=600,height=600,fit=scale-down,format=auto,onerror=redirect,/https://images.g2crowd.com/uploads/attachment/file/106071/User-management.png) **Viedoc** ![Viedoc screenshot](https://images.g2crowd.com/cdn-cgi/image/width=600,height=600,fit=scale-down,format=auto,onerror=redirect,/https://images.g2crowd.com/uploads/attachment/file/1231450/012025-Clinic-selection-card-1-_1_.png) **Ratings** from reviews Meets Requirements **Castor** 9.1 9.1113 **Viedoc** 8.6 8.6210 Ease of Use **Castor** 9.3 9.3116 **Viedoc** 9.2 9.2211 Ease of Setup **Castor** 8.8 8.842 **Viedoc** 8.9 8.9144 Ease of Admin **Castor** 9.3 9.332 **Viedoc** 8.8 8.875 Quality of Support **Castor** 9.2 9.2100 **Viedoc** 9.2 9.2200 Has the product been a good partner in doing business? **Castor** 9.3 9.330 **Viedoc** 9.4 9.467 Product Direction (% positive) **Castor** 9.5 9.5115 **Viedoc** 9.4 9.4204 **Features** ratings from reviews Electronic Data Capture (EDC) 9.1 97 8.9 243 Electronic Trial Master File (eTMF) Not enough data 8.7 27 Clinical Trial Management Systems Not enough data 8.4 71 User Insights **Reviewers' Company Size** Small-Business(50 or fewer emp.) 48.8% Mid-Market(51-1000 emp.) 16.0% Enterprise(\> 1000 emp.) 35.2% Small-Business(50 or fewer emp.) 48.8% Mid-Market(51-1000 emp.) 16.0% Enterprise(\> 1000 emp.) 35.2% Small-Business(50 or fewer emp.) 37.9% Mid-Market(51-1000 emp.) 29.3% Enterprise(\> 1000 emp.) 32.8% Small-Business(50 or fewer emp.) 37.9% Mid-Market(51-1000 emp.) 29.3% Enterprise(\> 1000 emp.) 32.8% **Reviewers' Industry** [![Castor](https://images.g2crowd.com/uploads/product/hd_favicon/ab11d0324c2443e077f112dc56c6baec/castor-edc-castor.svg "Castor")](https://www.g2.com/products/castor-edc-castor/reviews) Castor Hospital & Health Care 48.0% Research 20.8% Medical Practice 12.0% Health, Wellness and Fitness 6.4% Medical Devices 4.0% Other 8.8% [![Viedoc](https://images.g2crowd.com/uploads/product/hd_favicon/10deb15544ce14a0f7747ee8ff8e0cdb/viedoc.svg "Viedoc")](https://www.g2.com/products/viedoc/reviews) Viedoc Pharmaceuticals 25.9% Research 17.0% Information Technology and Services 14.3% Biotechnology 11.6% Hospital & Health Care 11.6% Other 19.6% Alternatives **Castor Alternatives** ![Medrio EDC](https://images.g2crowd.com/uploads/product/hd_favicon/65b270652651004e977e058dea2fb67d/medrio-edc.svg "Medrio EDC") [ Medrio EDC ](/products/medrio-edc/reviews) ![REDCap](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_3a325ce0a148d1e1484014bf7b006b5d/redcap.png "REDCap") [ REDCap ](/products/redcap/reviews) ![OpenClinica](https://images.g2crowd.com/uploads/product/hd_favicon/1499354460/openclinica.svg "OpenClinica") [ OpenClinica ](/products/openclinica/reviews) ![Medidata Rave](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_e3df70a10924796673ee70bf62a92dda/medidata-rave.jpg "Medidata Rave") [ Medidata Rave ](/products/medidata-rave/reviews) **Viedoc Alternatives** ![Medrio EDC](https://images.g2crowd.com/uploads/product/hd_favicon/65b270652651004e977e058dea2fb67d/medrio-edc.svg "Medrio EDC") [ Medrio EDC ](/products/medrio-edc/reviews) ![Egnyte](https://images.g2crowd.com/uploads/product/hd_favicon/91bb854a397a0e939339a805a61acf75/egnyte.svg "Egnyte") [ Egnyte ](/products/egnyte/reviews) ![MasterControl Quality Management System](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_952e9aa4df0af1b0706297e2afcb725f/mastercontrol-quality-management-system.png "MasterControl Quality Management System") [ MasterControl ](/products/mastercontrol-quality-management-system/reviews) ![REDCap](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_3a325ce0a148d1e1484014bf7b006b5d/redcap.png "REDCap") [ REDCap ](/products/redcap/reviews) ## Castor vs Viedoc FAQs Generated using AI Last updated: August 15, 2026 ### What is the difference between Castor vs Viedoc? Castor stands out for its higher Meets Requirements score, while Viedoc is noted for its user interface and broader reviewer base. | [Castor](https://www.g2.com/products/castor-edc-castor/reviews) | [Viedoc](https://www.g2.com/products/viedoc/reviews) | | --- | --- | | 4.6/5 (126 reviews) | 4.5/5 (274 reviews) | | Small-Business | Enterprise | | 8.8 | 8.9 | | 9.2 | 9.2 | | Ease of Use (5 all-time mentions) | User Interface (31 all-time mentions) | ### How do the pricing models of Castor and Viedoc compare? Viedoc is rated higher for value, with reviewers more satisfied with its pricing and cost structure than Castor. - **Castor:** In recent reviews, some reviewers from small research organizations mention that pricing could be improved for tighter budgets. - **Viedoc:** Reviewers frequently highlight Viedoc as budget-friendly and cost-efficient, with several noting its moderate price and value for features. - **Switching reasons:** Reviewers cite Viedoc's better pricing and more advanced toolset as reasons for choosing it over previous EDC solutions. ### What are the best alternatives to Castor and Viedoc? The top three alternatives to Castor and Viedoc are Medrio EDC, REDCap, and Egnyte. | Product | G2 Rating (reviews) | Largest Segment | Pricing Insight | Top Reviewer-Cited Strength | | --- | --- | --- | --- | --- | | [Castor](https://www.g2.com/products/castor-edc-castor/reviews) | 4.6/5 (126 reviews) | Small-Business | Pricing could be improved for small research budgets | Ease of Use (5 all-time mentions) | | [Viedoc](https://www.g2.com/products/viedoc/reviews) | 4.5/5 (274 reviews) | Enterprise | Budget-friendly and cost-efficient | User Interface (31 all-time mentions) | | [Medrio EDC](https://www.g2.com/products/medrio-edc/reviews) | 4.2/5 (254 reviews) | Small-Business | — | User-friendly and easy to implement | | [REDCap](https://www.g2.com/products/redcap/reviews) | 4.3/5 (221 reviews) | Enterprise | — | Flexible data collection and strong compliance | | [Egnyte](https://www.g2.com/products/egnyte/reviews) | 4.4/5 (1162 reviews) | Small-Business | — | Secure file sharing and collaboration | ### Which Electronic Data Capture (EDC) features should I prioritize when comparing Castor and Viedoc? Buyers comparing Castor and Viedoc should prioritize Ease of Use, Reporting, Data Management, Customization, and Integration capabilities. - **Ease of Use:** Castor (9.3), Viedoc (9.2); Viedoc has 38 all-time mentions for ease of use, Castor has 5. - **Reporting:** Viedoc has 11 all-time mentions for reporting, Castor has 1 mention of inadequate reporting. - **Data Management:** Viedoc (11 all-time mentions), Castor (2 all-time mentions). - **Customization:** Viedoc (12 all-time mentions), Castor (—). - **Integration capabilities:** Viedoc (9 all-time mentions for easy integrations), Castor (—). ### What are the pros and cons of Castor vs Viedoc? Castor's headline strength is ease of use, while Viedoc is most recognized for its user interface and customization. - **Castor strengths:** Ease of Use (5 all-time mentions), Navigation Ease (3), Data Management (2), Design Ease (2), Organization (2), Intuitive interface, Efficient setup, Notification automation, Regular updates, Time-saving, Tracking. - **Castor trade-offs:** Inadequate reporting (1 all-time mention), Data management issues, Login issues, Slow performance, Some navigation and export limitations. - **Viedoc strengths:** Ease of Use (38 all-time mentions), User Interface (31), Intuitive (23), Customer Support (22), Design Ease (21), Features (21), Navigation Ease (17), Customization (12), Speed (12), Data Management (11), Reporting (11), Implementation Ease (11), Efficiency (10), Data Entry (9), Easy Integrations (9), Customer Satisfaction (7). - **Viedoc trade-offs:** Slow performance (13 all-time mentions), Difficulty (11), Access control (8), Form design issues (8), Some advanced reporting and integration limitations, Complexity for advanced features. ### Is Castor or Viedoc better for small businesses? Castor is a better fit for small businesses, as it is most frequently reviewed by small-business users and receives strong ease-of-use sentiment from this segment. - **Castor:** Largest reviewer segment is Small-Business, with reviewers highlighting ease of use and straightforward implementation for smaller organizations. - **Viedoc:** Largest reviewer segment is Enterprise, with reviewers noting that while Viedoc is user-friendly, its pricing and feature set are sometimes seen as more suitable for larger or more complex studies. ### Which Electronic Data Capture (EDC) platform has better integrations? Viedoc is favored for integrations, with reviewers citing easy integrations in 9 all-time mentions, while Castor has no reviewer-cited integrations. - **Castor:** No reviewer-cited integrations. - **Viedoc:** Easy integrations are mentioned in 9 reviews, with reviewers highlighting API connectivity and integration with ePRO, eCOA, and wearables. ### How do Castor and Viedoc compare on customer support? Castor and Viedoc are rated equally on Quality of Support, both scoring 9.2, indicating parity in reviewer satisfaction. - **Castor:** Reviewers consistently describe support as responsive, helpful, and quick to resolve issues, with several noting immediate responses and strong assistance during setup and troubleshooting. - **Viedoc:** Reviewers highlight Viedoc's customer support as responsive and knowledgeable, with 22 all-time mentions, and praise the availability of training materials and helpful onboarding resources. ### Which is easier to implement, Castor or Viedoc? Castor and Viedoc score within a tenth of a point on Ease of Setup (8.8 vs 8.9), indicating near-parity in implementation experience. - **Castor:** Reviewers frequently mention straightforward and easy setup, with minimal training required and intuitive onboarding for new users. - **Viedoc:** Reviewers describe the initial setup as easy and user-friendly, with drag-and-drop design and clear documentation supporting quick adoption. ### Which product has better Reporting? Viedoc is stronger on Reporting, with more reviewer-cited mentions and positive sentiment for its reporting capabilities. - **Castor:** Inadequate reporting is cited as a trade-off in 1 all-time mention, and reporting is not highlighted as a core strength. - **Viedoc:** Reporting is cited as a strength in 11 all-time mentions, with reviewers praising built-in reports, custom reporting options, and ease of generating operational and study-specific insights.