The brain holds the key to who we are, our thoughts, memories, and perception of the world around us. Modeling the underlying mechanisms is critical to understand the brain. Population receptive field (pRF) models capture how neurons process information. The applications extend from vision to other sensory and motor domains, clinical disorders and high-level cognition, including numerical cognition and memory. Moreover, pRF models generalize across measurement modalities and species. But the pRF modeling software that served the community for 16 years is outdated, leading to fragmentation and reproducibility problems. Here, we will create a unified, well-validated software package with educational tools. Our team unites experts in pRF modeling development and applications. Many members of the international community pledged to support the new software. Therefore, we are well placed to once again unite the international community, embrace open-science standards and sustain the software long-term to support innovations throughout psychology and neuroscience.