Castor is a clinical research software company founded in Amsterdam in 2012. It provides a modular cloud platform designed to run clinical trials end-to-end, serving clients across more than 90 countries. The company's technology is trusted by some of the largest contract research organizations (CROs) and biopharma companies worldwide.
The platform's foundation is its Electronic Data Capture (EDC) system. This is complemented by a suite of modules including eConsent for recruitment and screening, and eCOA for capturing patient-reported outcomes. The platform also incorporates decentralized clinical trial (DCT) capabilities, enabling trial designs that center on participants through features like bring-your-own-device (BYOD) support.
Castor applies practical artificial intelligence through its Castor Catalyst product, which aims to automate manual processes that slow research. The company operates in the clinical research and biopharma verticals, having supported over 15,000 studies to date. Its stated goal is to help accelerate development timelines and drive data-driven decisions in clinical trials.






