In this context, we propose a new tool to efficiently determine the topology of crystal structures: the Julia package CrystalNets.jl. Julia is a modern general-purpose and scientific programming language that offers both great performance and ease of programmability . This, as well as carefully chosen optimisations, allows CrystalNets.jl to outperform Systre while leveraging a very similar core algorithm to ensure soundness. Moreover, the package uses the Julia port of chemfiles which allows it to read common chemical file formats like CIF, making it easy to use for the analysis of single cases as well as large databases of crystal structures.