The thing I’m best known for is my work writing PsychoPy, the free easy software for psychology experiments. The work on that and Pavlovia also caused ne to create a company, Open Science Tools, to manage and sustain those tools professionally with a sustainable revenue stream.

PsychoPy offers a unique combination of interfaces, allowing you to create code in a really simple visual interface, with a flow diagram and dialog boxes to control stimuli, and a Python library for those that want to hand-code scripts in the powerful Python programming language.

All of this (many years of work and hundreds and thousands of lines of code) is open source and free¹ for everyone.

PsychoPy has become the software package of choice in labs and undergraduate classrooms all over the World, with over 40,000 monthly users.

For (independent) metadata about the project see www.openhub.net/p/PsychoPy