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Concerto platform for the development of on-line adaptive tests

Open-source Online R-based Adaptive Testing Platform

Concerto is an open-source testing platform that allows users to create various online assessments, from simple surveys to complex IRT-based adaptive tests. 

Concerto is free for academic and commercial use!.Click here to launch Concerto!


  1. Short Raven-style adaptive IQ test, Michal Kosinski and Fiona Chan
  2. Basic Adaptive Demo Test, Michal Kosinski and David Stillwell
  3. 100-item IPIP NEO-PI_R measure, Koen De Couck and  Vaishali Mahalingam
  4. Music Taste Questionnaire, Arielle Bonneville-Roussy
  5. 20-item Personality Test, Luning Sun.
  6. Numerical Intelligence Test using MIRT, Igor Gomes Menezes

Why use Concerto?

  • Open source - You can both use Concerto and host your test on our server free of charge. The platform's open-source components are continuously updated and improved by our growing community of users
  • Computerised Adaptive Testing - You can use the powerful R engine to apply virtually any Item Response Theory and Computerised Adaptive Testing model
  • Feedback - Provide your test-takers with an instant response
  • Flexibility - Create any number of tests with any number of questions
  • Concerto events -  We hold Concerto training sessions and workshops throughout the world

Start Using Concerto

  1. Create a free Concerto account on our server. This is the fastest way to start testing!
  2. Alternatively, you can launch an Amazon Machine Image with Concerto v4 pre-installed (click here to see how). If you need help please do not hesitate to contact us.
  3. You can also download Concerto and install it on your own server
  4. Read more about Concerto options 
  5. Need more support? Consider one of our tailored solutions     


  1. Tutorials
  2. Workshops