--- 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) ![Verified User in Medical Devices](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Medical Devices") UM Verified User in Medical Devices Small-Business (50 or fewer emp.) 8/2/2023 "A very user-friendly and complete system for all research purposes." 4.5/5 What do you like best about Castor? The system is very clear and user-friendly. It includes many possibility for all different type of data collection and simplify analysis afterwards. Review collected by and hosted on G2.com. What do you dislike about Castor? I have no major drawbacks to describe about this system. Review collected by and hosted on G2.com. What problems is Castor solving and how is that benefiting you? Simplified method for data collection, user-friendly management of the dataset, simplified analysis once the dataset is completed. Significant increase in performance of our R&D group. 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-8392344/official_response/edit) Thank your for your feedback! We love to hear that the system is not only fulfilling all of your data collection needs, but also simplifying your post-study data analysis processes – this is exactly what we aim to do! Validated ReviewerIncentivizedSource: G2 invite on behalf of seller ![Verified User in Medical Practice](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Medical Practice") UM Verified User in Medical Practice Small-Business (50 or fewer emp.) 8/8/2023 "Extensive options" 4/5 What do you like best about Castor? For every clinical trial or study there are enough options for every design. Review collected by and hosted on G2.com. What do you dislike about Castor? Sometimes, I have experienced a lack of overview. Review collected by and hosted on G2.com. What problems is Castor solving and how is that benefiting you? The system is reliable and uniform. There is little room for mistakes which increases validity and reproducibility of your research. Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 invite on behalf of seller ![Verified User in Marketing and Advertising](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Marketing and Advertising") UM Verified User in Marketing and Advertising Mid-Market (51-1000 emp.) 11/8/2022 "Managing data and tracking progress are both simplified through Castor." 3.5/5 What do you like best about Castor? Access to the database is the main advantage of utilising Castor. It gives a general perspective, allows several profesors to work in the same database, tracks changes in the data as well as the causes of such changes. making it simple for me to give the database to others. I may also choose to limit someone's access to only the pertinent data, if they wish. Review collected by and hosted on G2.com. What do you dislike about Castor? A more interactive display of the patients who were included and omitted would be nice. making use of colours. I must additionally complete the email address in the first list when submitting a survey to a student, staff or teacher by selecting the "update email" step. This seems like a needless procedure that also leaves possibility for mistake. Additionally, I would need the ability to ask CASTOR to deliver a single output file rather than individual files for each survey when extracting data. Review collected by and hosted on G2.com. What problems is Castor solving and how is that benefiting you? a database with fixed data, which makes it impossible to enter the incorrect action for each question or data box since the results are predetermined. When using Excel there is a danger. Additionally, by allowing students to complete the surveys, I can instantly convert their responses into datapoints and save spending hours manually filling up each questionnaire's data in SPSS. Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 invite ![amrit m.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "amrit m.") AM amrit m. Marketing Consultant Small-Business (50 or fewer emp.) 11/4/2022 "Do it Castor Way" 4/5 What do you like best about Castor? Using castor, we saved a lot of time and resources and increased our productivity 2x due to efficiently sorting data into different schemas. Review collected by and hosted on G2.com. What do you dislike about Castor? As for me, there is no downside, but it usually takes time to start. But I would recommend that they can refine their UI a little bit more. Review collected by and hosted on G2.com. What problems is Castor solving and how is that benefiting you? We were given a simple and user-friendly solution by Castor to manage documentation for a huge number of tables. We can now take advantage of the work we undertake on data governance to provide our data employees autonomy and increase their efficiency. Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 invite ![Gwendolyn V.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Gwendolyn V.") GV Gwendolyn V. Senior redactielid Enterprise (\> 1000 emp.) 9/6/2019 "Castor, usefull for both data management and progression overview." 4.5/5 What do you like best about Castor? The major benefit of using Castor is having alway access to the database. It provides an overview and the posibility of multiple researchers working in one database and monitors changes and reasons for change of data. Making it easy for me to trust others with the database. If prefered I can also decide not to give someone full-access but only access to the relevant data. Review collected by and hosted on G2.com. What do you dislike about Castor? I would like to have a more interactive view of included and excluded patients. Incorporating collors. Additionally when sending a survey to a patient, I am obligated to fill out the email adress also in the first list through a 'change email' action. This feels as an unnessecary action, also creating room for error. I additionally would like an option to, when extracting data, requesting CASTOR to provide 1 output file, instead of separate files per survey. Review collected by and hosted on G2.com. Recommendations to others considering Castor: There are multiple data management software packages of which Castor is one of the providers you can choose from. I recomment Castor as its easy to use with quick and easy support. They help me build my database the way I want to be. Some of the other providers request you to be more experienced. If this is not the case, Castor is really easy. Review collected by and hosted on G2.com. What problems is Castor solving and how is that benefiting you? A database with fixed data, meaning that it is not possible to provide the wrong action per question/data box as the outcomes are predefined. This is a risk using Excel or SPSS. Additionally I can let patients fill out the questionnaires, directly translating this into datapoints, no more manually filling out data in SPSS per questionnaires, saving hours. Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerSource: Organic ![Anne-Floor Q.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Anne-Floor Q.") AQ Anne-Floor Q. MD Enterprise (\> 1000 emp.) 7/1/2019 "Castor Review" 4.5/5 What do you like best about Castor? Castor is VERY user friendly. We do several studies with over 40 different studies, therefore a lot of new staff needs to be trained for our CRF. Since we use Castor we find less 'user mistakes' in the data we collect. The forms are filled out intuitively which saves a lot of time for monitoring and improves our data quality. Besides that Castor is fast, and the helpdesk is always available in case we need them. Review collected by and hosted on G2.com. What do you dislike about Castor? Currently nothing. Sometimes we run into features that we want to have in our eCRF and so far Castor always worked with us to make sure we get those features. Review collected by and hosted on G2.com. Recommendations to others considering Castor: If you are looking for eCRF's for research purposes I would highly recommend Castor after having used several other systems. Review collected by and hosted on G2.com. What problems is Castor solving and how is that benefiting you? Data being lost because research nurses do not know exactly how or where to fill the data! This was a major problem with previous eCRF's that we used in 10 different countries. Also problems with randomisation where solved as this feature is inside the eCRF. Review collected by and hosted on G2.com. Show More Response from Elena Kochova of Castor [Editedit](https://www.g2.com/survey_responses/castor-review-2643832/official_response/edit) Thank you, Anne-Floor! Great to hear that Castor has improved the data quality of your studies - that's exactly what we aim to do: to make research as efficient as possible by allowing easy and secure collection of standardized data across the globe! Current UserValidated ReviewerSource: Organic ![Robert J. T.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Robert J. T.") RT Robert J. T. Biotechnology Specialist Mid-Market (51-1000 emp.) 5/27/2019 "Very good software for my clinical laboratory." 4.5/5 What do you like best about Castor? Since I saw this system, it seemed ideal to try it, and since then I have liked to use it, for its good and friendly interface, this system has been able to adapt to the most demanding clinical standards of my business, has been able to provide me with an excellent database of the different studies that I carry out in my laboratory and also to keep a record of each patient. Thanks to the number of functions that this system has, my team has been able to be efficient in their respective tasks, since it has been possible to optimize delivery times for clinical studies and leaving clients satisfied with the work done. Also, I liked the attention provided by the technical support staff, who have been very attentive and professional, able to correct any system error. Review collected by and hosted on G2.com. What do you dislike about Castor? At the moment I have no complaints about this system, I feel very satisfied using this software. Review collected by and hosted on G2.com. Recommendations to others considering Castor: If your business consists of a clinical laboratory or clinic, I believe that this system is ideal for you, without a doubt this system is economical and has many functions capable of speeding up your work in the best way and manner. Review collected by and hosted on G2.com. What problems is Castor solving and how is that benefiting you? Thanks to this system, we can maintain a controlled order of the entire database that my company counts on, allowing us to review and carry out an analysis of the patterns produced by each medical study carried out. It has also allowed us to gain time in decision-making, thanks to the detailed reports that can be issued by the system and that are very understandable. Thanks to Castor EDC, we have been able to elevate our service pattern to an international standard, which allows us to self-evaluate in relation to the level of quality of service and customer service, among many other functions. Review collected by and hosted on G2.com. Show More Response from Elena Kochova of Castor [Editedit](https://www.g2.com/survey_responses/castor-review-2364748/official_response/edit) Thanks Robert for your positive review! We're very pleased to hear that your demands have been met and that you and your clients are satisfied with what you get from Castor! It also makes me personally very happy that you have pointed out our support team who does their best to help our customers :-) 5/29/2019 Current UserValidated ReviewerIncentivizedSource: G2 invite ![Lieke H.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Lieke H.") LH Lieke H. Phd-student (aio) Enterprise (\> 1000 emp.) 7/31/2019 "Very nice and working well" 4/5 What do you like best about Castor? Castor does was it promises to do, has a lot of features and is flexible to use. The help section is nice and informative. At some point I wanted to extend the duration of using the system, and Castor was very helpful. I like the feature of sending and exporting questionnaires very much. This way I can make sure that data is never lost. Review collected by and hosted on G2.com. What do you dislike about Castor? I had a problem once when the system went offline without warning me in advance. The automatic questionnaires were not sent and I would have liked to get a message about that, since it is very important for my research that questionnaires are sent in time. I also would like to get a warning if a questionnaire is sent to a non existing e-mail adress. Furthermore, sometimes exporting data is difficult, because I have multiple pages with records. If I change the page to show me all records, this change disappears every time I reload the page. At the beginning, it took me some time to learn how to use the website, because the tabs are a bit difficult. For example, I struggled with the difference between the tabs 'structure' and 'form'. Review collected by and hosted on G2.com. What problems is Castor solving and how is that benefiting you? With Castor I don't have to worry about the safety of my data. The system also works really well for sending questionnaires. Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 invite on behalf of seller AV Alden v. Datamanagement Consultant and Developer Clinical Studies Enterprise (\> 1000 emp.) 3/20/2019 "The best next thing to Oracle Clinical" 4.5/5 What do you like best about Castor? The simple and easy way of setting up a complete study. One stop shop: study CRF, reports, surveys, randomization A very good and thorough audit trail Review collected by and hosted on G2.com. What do you dislike about Castor? The lack of being able to change the layout, even if it's small simple changes Having to use unique variables over different visits that capture the exact same data. Review collected by and hosted on G2.com. Recommendations to others considering Castor: Castor is free untill you go Live with your study. So you can try it out free of charge. See how it works, see what all you can do with the EDC. It prevents you of having to combine different data capture applications such as survey and/or randomization-applications. Castor keeps improving often with upgrades every 3 to 4 months. Review collected by and hosted on G2.com. What problems is Castor solving and how is that benefiting you? Castor has a discount price for all researchers within Amsterdam UMC. Amsterdam UMC and Castor are working on having a total collaboration with each other. Review collected by and hosted on G2.com. Show More Response from Elena Kochova of Castor [Editedit](https://www.g2.com/survey_responses/castor-review-1963971/official_response/edit) Thank you for the review, Alden! We hope to increase our collaboration with your institute even further. While the forms are customizable to a large extent, the user interface is standard - but with our new navigation and design we hope that you won't need to change the layout at all! Further, if you are capturing the same data across study visits, we recommend using repeated measures. Then you can use the same variables and forms across the study. 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") AH Verified User in Hospital & Health Care Enterprise (\> 1000 emp.) 3/22/2019 "Excellent service and experience" 4.5/5 What do you like best about Castor? From the very beginning the support from Castor has been excellent. Their team provided a very good demonstration of the database and help put together a competitive and comprehensive package for our multicentre clinical trial. I found the database incredibly intuitive to use and this made populating a CRF very easy. We like it so much we have set up other studies with the same database system across our research facility. Review collected by and hosted on G2.com. What do you dislike about Castor? We have no concerns regarding the database at present - initially several years ago we did encounter some limitations on mobile platforms but these have all been ironed out with regular updates and support from Castor. Review collected by and hosted on G2.com. What problems is Castor solving and how is that benefiting you? A particular challenge with our study is that it is international and therefore the data capture and audit is often done remotely. As a sponsor site we required a system that would allow us to easily audit the data quality, raise any queries and have a system to track these changes. Castor EDC ticks all the boxes. Review collected by and hosted on G2.com. Show More Response from Elena Kochova of Castor [Editedit](https://www.g2.com/survey_responses/castor-review-1977625/official_response/edit) Thank you for your review and great to hear that Castor ticks all the boxes! Having one EDC system within the entire research facility is indeed advantageous, especially since you can share and re-use study forms (and data!). We hope that many more successful studies will be conducted at your institute! -Elena 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);)