--- 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) ![Cuneyt P.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Cuneyt P.") CP Cuneyt P. Software Engineer Enterprise (\> 1000 emp.) 8/8/2023 "Castor EDC is a very user friendly and a top quality product with several possibilities." 5/5 What do you like best about Castor? This high quality product helps users to define eCRF's and surveys in a very user friendly interface and lets the respondents enter their data efficiently. The support is also top quality, they answer all questions within a few hours. Review collected by and hosted on G2.com. What do you dislike about Castor? Nothing! There are a few points to improve, like in all software products, I already reported those points to the support. Review collected by and hosted on G2.com. What problems is Castor solving and how is that benefiting you? Castor allows users to define high quality electronic case report forms (eCRF) and surveys. The dependencies between the variables, type checks, verifications, etc. are perfectly implemented. This results in a high quality database where the researchers may analyse their data with a high level of confidence. Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 Gives Campaign LC Lucas C. Small-Business (50 or fewer emp.) 8/4/2023 "Very easy to navigate but has some awkward nuances" 3.5/5 What do you like best about Castor? I have found it very easy to navigate Castor. The forms are displayed in a very user friendly way. Review collected by and hosted on G2.com. What do you dislike about Castor? I have found performing some actions can be a bit awkward such as having to go into the surveys section to see each survey. Having them in each section they are relevant to would be easier. Review collected by and hosted on G2.com. What problems is Castor solving and how is that benefiting you? I haven't used Castor long enough to know/benefit from problems Castor is solving 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 "Castor is clear and easy to navigate" 4.5/5 What do you like best about Castor? What I like most about Castor is that we are able to upload encrypted cource documents directly to the EDC. I also like the filtering options. Review collected by and hosted on G2.com. What do you dislike about Castor? Other EDCs send nofitications when a query is added which I appreciate. Additionally, I wish castor EDC was more mobile friendly. Review collected by and hosted on G2.com. What problems is Castor solving and how is that benefiting you? Castor is helping me work on a cancer registry. Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerIncentivizedSource: G2 invite on behalf of seller ![Verified User in Research](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Research") UR Verified User in Research Small-Business (50 or fewer emp.) 11/20/2023 "Castor for Research studies" 5/5 What do you like best about Castor? Prior to using Castor, our research study was on paper. It made tracking, auditing, and filling information in at different sites difficult. Review collected by and hosted on G2.com. What do you dislike about Castor? The pages load slowly and sometimes the data takes a few seconds to be accepted Review collected by and hosted on G2.com. What problems is Castor solving and how is that benefiting you? Tracking visits, making sure visits are up to date, finding missing data Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerIncentivizedSource: G2 invite on behalf of seller ![Marcela G.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Marcela G.") MG Marcela G. Specialist, Clinical Project Manager Research Small-Business (50 or fewer emp.) 8/17/2023 "I love the environment, is very graphic." 4/5 What do you like best about Castor? I like the colors and the different status of the data is very graphic. Review collected by and hosted on G2.com. What do you dislike about Castor? Sometimes is not easy to identify which CRFs are the queries pending review. Review collected by and hosted on G2.com. What problems is Castor solving and how is that benefiting you? I have to verify the data entered by the sites with the source documents. For that reason, es very helpful the alarms, and the different colors to show the query status. Review collected by and hosted on G2.com. Show More Response from Kevin Thornton of Castor [Editedit](https://www.g2.com/survey_responses/castor-review-8493584/official_response/edit) Thanks very much for taking the time to review Castor. We're delighted that you've had a good experience with our platform and are willing to share that publicly. 4/22/2024 Current UserValidated ReviewerIncentivizedSource: G2 invite on behalf of seller MR Mariana R. Small-Business (50 or fewer emp.) 10/3/2023 "Easy for begginers" 5/5 What do you like best about Castor? it is very easy to use, I use it almost three times a week introducing data. I recommend it for nurses. Review collected by and hosted on G2.com. What do you dislike about Castor? I can not write anything that I dislike. Review collected by and hosted on G2.com. What problems is Castor solving and how is that benefiting you? Gathering all the data of patients. Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerIncentivizedSource: G2 invite on behalf of seller PB Perasina B. Small-Business (50 or fewer emp.) 10/2/2023 "Castor Data Input" 5/5 What do you like best about Castor? Castor is very easy to navigate and it's step by step walk through of a patient treatment. Review collected by and hosted on G2.com. What do you dislike about Castor? It's a lot of data to imput. Other than that it's great. Review collected by and hosted on G2.com. What problems is Castor solving and how is that benefiting you? No business problems as of yet Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerIncentivizedSource: G2 invite on behalf of seller ![Vijayaraghavendra K.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Vijayaraghavendra K.") VK Vijayaraghavendra K. Senior Medical laboratory technician Small-Business (50 or fewer emp.) 9/19/2023 "Castor EDC is very easy and simple for work of CDM." 5/5 What do you like best about Castor? EDC details entry and survey entry.I am responsible for utilizing Castor to execute my job functions Review collected by and hosted on G2.com. What do you dislike about Castor? no word is there for dislike of Castor,EDC details entry and survey entry. Review collected by and hosted on G2.com. What problems is Castor solving and how is that benefiting you? server problems and form creation Review collected by and hosted on G2.com. Show More 10/2/2023 Current UserValidated ReviewerIncentivizedSource: G2 invite on behalf of seller MC Misty C. Mid-Market (51-1000 emp.) 10/2/2023 "User Friendly !" 5/5 What do you like best about Castor? Castor G2 is easy to use and follow, the updates have been appreciated and I love using the sytem with our study. I have had no problsm with Castor and have been using for 2.5 years . Thank you for dilignece in keeping this user friendly and easy to follow Review collected by and hosted on G2.com. What do you dislike about Castor? I can not list anything i dislike about Castor Review collected by and hosted on G2.com. What problems is Castor solving and how is that benefiting you? updates released have made the program easier Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 invite on behalf of seller ![Federica R.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Federica R.") FR Federica R. Small-Business (50 or fewer emp.) 10/3/2023 "Very useful platform" 5/5 What do you like best about Castor? It's a highly intuitive platform. I used it for a clinical study, and I'm extremely satisfied with its performance. Even though I've only used it a few times over the past few months, it's easy to remember how to navigate. Review collected by and hosted on G2.com. What do you dislike about Castor? It is a very well-done platform with nothing to complain about Review collected by and hosted on G2.com. What problems is Castor solving and how is that benefiting you? It helps me input patient data for a clinical study. It's extremely useful. Review collected by and hosted on G2.com. Show More Validated 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);)