BigNeuron is a community effort to define and advance the state of the art of single neuron reconstruction and analysis and create a common platform for analyzing 3D neuronal structure, led by Allen Institute for Brain Science and uniting some of the leading research and computing centers around the world, including INCF. The results will include a large set of open-source, community-based tools for neuroscience studies, standardized protocols, and a rich library of morphological feature definitions and algorithms.