oTree

The most powerful platform for behavioral research and experiments
Active
Open-source

oTree is an open-source platform for web-based interactive tasks, such as:

Psychology experiments Multiplayer games Auction markets Strategy games Dynamic questionnaires or surveys Assessments and tests oTree has been used in over 1500 academic publications.

oTree
Project type: Tool or platform
Last modified: Nov 12, 2025 Added: Jan 11, 2024
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