MAYA is an open-access tool to analyze the chemical space and chemical multiverse of compound data sets annotated with multiple biological activities. With MAYA, it is possible to customize the visual representation of the chemical space by modifying the color palette, size, and shape of each data point. The visualizations generated are interactive graphs useful for in-depth analysis of each data point, allowing for the retrieval of SMILES codes, visualization of the chemical structures, and an activity index value, as a measure of the compound´s multi-activity profile. A straightforward application of the free tool is exploring SMARts of compound data sets. The tool is general and can be extended to analyze properties other than biological activities. As part of this work, we also introduce the concept of the "chemical megaverse" defined as a collection or groups of chemical spaces analyzed with both: