--- title: Castor Reviews meta\_title: 'Castor Reviews 2026: Details, Pricing, & Features | G2' meta\_description: Filter 126 reviews by the users' company size, role or industry to find out how Castor works for a business like yours. aggregate\_rating: rating\_value: 4.6 review\_count: 126 scale: '5' date\_modified: '2026-08-10' parent\_category: name: Clinical Research url: https://www.g2.com/categories/clinical-research --- # Castor Reviews & Product Details Visit Website Castor is a leading cloud-based clinical data platform designed to democratize research and streamline the complexities of decentralized, hybrid, and traditional clinical trials. Trusted by academic institutions, biotech, and pharmaceutical companies worldwide, Castor enables researchers to capture high-quality data and accelerate study timelines through a modular, human-centered ecosystem.   Our plug-and-play platform seamlessly integrates the four critical components of modern clinical research: Electronic Data Capture (EDC): A user-friendly, rapid-deployment EDC system that allows researchers to build and launch studies in a matter of clicks, not months, ensuring robust data integrity and security.   eConsent: A flexible electronic consent solution that simplifies patient enrollment and improves comprehension, supporting remote and on-site recruitment strategies to maximize participation.   eCOA (Electronic Clinical Outcome Assessment): Intuitive tools for capturing Patient-Reported Outcomes (PROs) directly from participants, enhancing engagement and retention while reducing the burden of data entry. Real-World Evidence (RWE): Advanced capabilities to capture and unify real-world data from wearables, medical devices, and EHRs, providing a holistic view of patient health beyond the clinical setting.   By prioritizing a "participant-first" approach, Castor improves the trial experience for both researchers and patients. From rapid study build and enrollment to final analysis, Castor delivers the speed, scalability, and compliance needed to drive successful outcomes in the evolving landscape of clinical research. * * * Product Website Castor Seller [Castor EDC](https://www.g2.com/sellers/castor-edc) Discussions [Castor Community](https://www.g2.com/products/castor-edc-castor/discuss) Languages Supported English, Dutch Solution Type All-in-One Overview by Laura McLoughlin Show More ## Value at a Glance Averages based on real user reviews. ### Time to Implement 2 months [ View More Pricing Information ](https://www.g2.com/products/castor-edc-castor/pricing) NF Natalie F. Enterprise (\> 1000 emp.) 10/2/2023 "Extremely useful and organised tool for clinical research!" 5/5 What do you like best about Castor? The customisability of this programme was the most useful element. The database matched exactly what was needed for my first project as PI and made data collection so easy! It's a really intuative system and was vital in collecting my evaluation data. Review collected by and hosted on G2.com. What do you dislike about Castor? No downsides about the system at all! I cannot fault it Review collected by and hosted on G2.com. What problems is Castor solving and how is that benefiting you? I needed a system that could colate pretty large amaounts of repetitive data and store them logically for review. The customizability was incredible and we had it laid out exactly as needed, nothing was comprmised on. Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerIncentivizedSource: G2 invite on behalf of seller ![Verified User in Hospital & Health Care](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Hospital & Health Care") UH Verified User in Hospital & Health Care Mid-Market (51-1000 emp.) 8/3/2023 "Very simple to use, reliable, stable" 5/5 What do you like best about Castor? What I like most is that you can create the forms with Castor yourself without needing a programmer's help. The data export allows for immediate further processing with common statistical programs. The functions such as good clinical practice and data protection are necessary for the registration of the studies. Review collected by and hosted on G2.com. What do you dislike about Castor? Castor is very powerful and offers many functions that go beyond the basics. For some of them, program examples can be found in forums, but overall a more detailed manual would be desirable. Even after years of use, I still lack an overview of all the functions Castor offers. Review collected by and hosted on G2.com. What problems is Castor solving and how is that benefiting you? The most important feature is that the collected data can be used immediately for export to common statistical programs without any cleaning or further processing. Ensuring data protection functions and Good Clinical Practice are other very important advantages of Castor. Review collected by and hosted on G2.com. Show More 8/26/2023 Current UserValidated ReviewerIncentivizedSource: G2 invite on behalf of sellerAI Translated ![Verified User in Research](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Research") AR Verified User in Research Small-Business (50 or fewer emp.) 8/2/2023 "Castor EDC for Clinical Trials" 4.5/5 What do you like best about Castor? The ability to have screening, eConsent, case report forms, and a study database on a centralized platform. Castor can aslo automate email reminders to participants and automate a schedule for emailing study questionnnaries. Review collected by and hosted on G2.com. What do you dislike about Castor? Overall, my experience was positive with the Castor Implementation team. I do truly appreciate the time and consideration that was given to me in the process. I feel like every meeting/call that I had, I learned something. It was all helpful. Having said that, I do believe the learning curve is steep. In my experience, I did not use the Castor team to buildout the EDC, and I understand that using them would have made this process much smoother. Unfortunately it was not in the budget as that is an additional service. It was hard to scramble through the videos and apply them as a newbie and I know that this prolonged the EDC being complete. I do feel like there is something missing for the customers that do not pay Castor to do the EDC building. Maybe in the customer package there could be options to purchase tutoring sessions or pay by the hour tutoring for customers on smaller budgets. I understand that it may not be a common problem but I was just sharing my experience to provoke some thoughts. Review collected by and hosted on G2.com. What problems is Castor solving and how is that benefiting you? Using Castor EDC reduced the paper trail that comes with performing a clinical trial. We were using multiple sites for this trial and having paper case report froms for each location would have been difficult to manage and very time consuming. Additionally, staying on top of the data monitoring duties was simpler and data was much easier to verify. Review collected by and hosted on G2.com. Show More Response from Cole Egan of Castor [Editedit](https://www.g2.com/survey_responses/castor-review-8393968/official_response/edit) Thank you for your review! Glad to hear that you are taking advantage of our email reminder and automated scheduling features for your study questionnaires. To offer assistance with future study builds, Castor now offers assisted build packages which include consulting time with one of our Clinical Implementation Specialists. Additionally, Solution Architect consulting can be purchased by the hour. Improving the efficiency of the clinical trial process is our goal – thank you for sharing that Castor EDC has reduced your paper trail and simplified your monitoring process! Current UserValidated ReviewerIncentivizedSource: G2 invite on behalf of seller MB Maria B. Enterprise (\> 1000 emp.) 11/9/2023 "Excellent streamlined EDC system!" 5/5 What do you like best about Castor? Castor shows me the progress on each patient, which helps me to focus on the data that needs to be completed. It is not repetitive and its interface is user friendly. Review collected by and hosted on G2.com. What do you dislike about Castor? Nothing that comes to mind! I haven't found any issues as a user. Review collected by and hosted on G2.com. What problems is Castor solving and how is that benefiting you? CASTOR isn't solving a problem, it is capturing all the clinical data that I input. Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerIncentivizedSource: G2 invite on behalf of seller ![Verified User in Mental Health Care](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Mental Health Care") UM Verified User in Mental Health Care Small-Business (50 or fewer emp.) 10/5/2023 "Great way to conduct research according to Good Scientific Practice" 4.5/5 What do you like best about Castor? Structured design for the entire study Intuitive design Possibility to directly calculate scores Quality checks of the data during the data collection (such as, setting the numeric range for a field) Dependencies to prevent impossible response options Audit trail Good customer support and quick responses to questions Review collected by and hosted on G2.com. What do you dislike about Castor? Takes a lot of time to transer a questionairre or interview into Castor. Would be better if would be a feature to automatically import a number of questions at once with a syntax. Better tracking of the survey responses, sending a automatic reminder to the responder if answers are incomplete Review collected by and hosted on G2.com. What problems is Castor solving and how is that benefiting you? Faciliting the research process and helping to adhere to good scientific practice Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerIncentivizedSource: G2 invite on behalf of seller ![Verified User in Hospital & Health Care](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Hospital & Health Care") UH Verified User in Hospital & Health Care Small-Business (50 or fewer emp.) 11/8/2023 "CastorEDC, the gold standard for study data management" 4.5/5 What do you like best about Castor? CastorEDC demonstrates study data in an efficient way. The user-friendly interface makes it easy in use for professionals with various backgrounds. Exporting data from CastorEDC into different statistical programs proved no challenge at all. Review collected by and hosted on G2.com. What do you dislike about Castor? Nothing to dislike! While I personally haven't made use of the Customer Support yet, I expect the quality of support to be in line with the other features of the system. Review collected by and hosted on G2.com. What problems is Castor solving and how is that benefiting you? CastorEDC helps me greatly in my data collection and management. By allowing automatic importation of online surveys, hundreds of hours of work is saved. Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerIncentivizedSource: G2 invite on behalf of seller ![Verified User in Hospital & Health Care](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Hospital & Health Care") UH Verified User in Hospital & Health Care Enterprise (\> 1000 emp.) 11/8/2023 "Easy to use platform to store study data" 4.5/5 What do you like best about Castor? The option to create calculations. I calculated the amount of radioactivity injected in a patient, including half-life of the nuclide and everything to a specific time point. Very easy with Java Script and the answers on questions specifically related to Castor EDC online Review collected by and hosted on G2.com. What do you dislike about Castor? The time it takes to load all my answers and to let me go on to the next field. You are logged off by the system very quick and then you need your password again. Review collected by and hosted on G2.com. What problems is Castor solving and how is that benefiting you? The calculations of the radioacitivity in the patient, the storage of the amount of data in a safe place and the availability to everyone in the team. Also, that you can share your databases with others and give them restrictions. Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 invite on behalf of seller ![Verified User in Hospital & Health Care](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Hospital & Health Care") UH Verified User in Hospital & Health Care Small-Business (50 or fewer emp.) 11/8/2023 "Castor Review" 5/5 What do you like best about Castor? Easy to use and the content is clear. The data is easy to input and the task bar is helpful to see where your up to and when your work is complete. I use castor in my line of work on a daily basis and it is very user friendly. Review collected by and hosted on G2.com. What do you dislike about Castor? I havent had any issues with the use of Castor, customer support is available if any assistance is required. Review collected by and hosted on G2.com. What problems is Castor solving and how is that benefiting you? Castor is helping us with the storage of anonymised data. Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerIncentivizedSource: G2 invite on behalf of seller ![Julie Antonelle O.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Julie Antonelle O.") JO Julie Antonelle O. Clinical Documentation Specialist Small-Business (50 or fewer emp.) 10/2/2023 "Castor has a great customer/account support" 4.5/5 What do you like best about Castor? They are very helpful in answering questions and resolving queries Review collected by and hosted on G2.com. What do you dislike about Castor? Maybe a little improvement on the dashboard to see a good overview of the data Review collected by and hosted on G2.com. What problems is Castor solving and how is that benefiting you? Helps is have a clean database for our clinical studies. We're also able to add queries for any discrepancies to the site and we're able to SDV/Lock the data once the queries are answered. Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerIncentivizedSource: G2 invite on behalf of seller DU Daniel U. Small-Business (50 or fewer emp.) 11/9/2023 "Very satisfied with using Castor EDC app!" 4/5 What do you like best about Castor? Very convenient and user-friendly system. Very pleased with the support service, receives an immediate response to any question or request. Review collected by and hosted on G2.com. What do you dislike about Castor? There some features that require additional payment. Review collected by and hosted on G2.com. What problems is Castor solving and how is that benefiting you? Helps me upload and track research information in an orderly and understandable way. Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerIncentivizedSource: G2 invite on behalf of seller ## Questions about Castor? Ask real users or explore answers from the community Get practical answers, real workflows, and honest pros and cons from the G2 community or share your insights. [ Ask about Castor ](https://www.g2.com/products/castor-edc-castor/discussions/new) GU Guest User What is Castor EDC used for? 0 Upvotes 0 [ Join the conversation ](https://www.g2.com/discussions/what-is-castor-edc-used-for) [ View all Discussions ](https://www.g2.com/products/castor-edc-castor/discuss) ## Pricing Insights Averages based on real user reviews. ### Time to Implement 2 months ### Return on Investment 31 months ### Average Discount 15% [ View More Pricing Information ](https://www.g2.com/products/castor-edc-castor/pricing) Castor Comparisons ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/small_square/small_square_3a325ce0a148d1e1484014bf7b006b5d/redcap.png "Product Avatar Image") REDCap 4.3/5(221) [ Compare Now ](https://www.g2.com/compare/castor-edc-castor-vs-redcap) ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/small_square/small_square_a5340e1976263d8c56085d6c5de085e0/openclinica.png "Product Avatar Image") OpenClinica 4.2/5(24) [ Compare Now ](https://www.g2.com/compare/castor-edc-castor-vs-openclinica) ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/small_square/small_square_bcf9bee7e4111b4cf58c1e1428647e6c/medrio-edc.png "Product Avatar Image") Medrio EDC 4.2/5(254) [ Compare Now ](https://www.g2.com/compare/castor-edc-castor-vs-medrio-edc) ##### ##### Castor Features Data Management Cloud Security - Electronic Data Capture (EDC) Role-Based User Permissions - Electronic Data Capture (EDC) Query Management - Electronic Data Capture (EDC) Clinical Study Support eCRFs - Electronic Data Capture (EDC) Audit Trail - Electronic Data Capture (EDC) Data Capture - Electronic Data Capture (EDC) [ View More Features ](https://www.g2.com/products/castor-edc-castor/features) ## Top-Rated Alternatives [ ![Medrio EDC](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Medrio EDC") Medrio EDC 4.2/5(254) ](https://www.g2.com/products/medrio-edc/reviews) [ ![REDCap](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "REDCap") REDCap 4.3/5(221) ](https://www.g2.com/products/redcap/reviews) [ ![OpenClinica](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "OpenClinica") OpenClinica 4.2/5(24) ](https://www.g2.com/products/openclinica/reviews) [ View All Alternatives ](https://www.g2.com/products/castor-edc-castor/competitors/alternatives) ##### Categories on G2 [Electronic Data Capture (EDC)](https://www.g2.com/categories/electronic-data-capture-edc) ##### Explore More [Best budget-friendly audit management system](https://www.g2.com/discussions/what-s-the-best-budget-friendly-audit-management-system)[Which lead retrieval systems have the strongest integrations with HubSpot and Salesforce so captured leads flow directly into the CRM without a CSV export step?](https://www.g2.com/discussions/which-lead-retrieval-systems-have-the-strongest-integrations-with-hubspot-and-salesforce-so-captured-leads-flow-directly-into-the-crm-without-a-csv-export-step)[What platform integrates incident response with SIEM tools?](https://www.g2.com/discussions/what-platform-integrates-incident-response-with-siem-tools) [Best cloud-based EDI solution](https://www.g2.com/discussions/what-s-the-best-cloud-based-edi-solution)[Top-rated HCM platforms for talent management](https://www.g2.com/discussions/what-are-the-top-rated-hcm-platforms-for-talent-management)[Pros and Cons Details](https://www.g2.com/products/castor-edc-castor/reviews?qs=pros-and-cons) [Show MoreShow Less](javascript:void(0);)