Accelerating medical research

Electronic Data Capture for medical research

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User friendly

  • Intuitive FormBuilder
  • No training required
  • Our support responds within the hour

Fully featured

  • Multicenter support
  • Randomisation
  • Surveys and more...


  • Free for small studies
  • Transparent pricing calculator
  • Discounts for institutes

Secure & Compliant

  • GCP & 21 CFR Part 11 (details)
  • EU Data Protection Directive
  • ISO27001 & ISO9001 hosting

Castor is used by researchers from


happy researchers

"What I like about Castor is that I can create a user-friendly database that will also create a user-friendly output, i.e. that I can already prepare the data as much as possible to make data analysis easier."

Brechtje Hesseling

Researcher at Reinier de Graaf Hospital

"Castor strikes the right balance: Comprehensive features and easy to use at an affordable price."

PD Dr. med. Marco Düring

Principal Investigator, Institute for Stroke and Dementia Research, LMU Munich

"I’m not a PC whizz, but with your guidance I was able to quickly and easily build my CRF."

Bee Barbini

Research Assistant, HIV & Sexual Health at King’s College Hospital

"Building the case report form was quick and easy with the FormBuilder. We highly recommend Castor!"

Paul Teunissen

Research Fellow, Department of Cardiology at VU University Medical Center Amsterdam