nTop is computational design software that lets engineers generate and validate geometry from parametric models, fields and automated design workflows. It is mainly used for parts made by additive manufacturing, such as lattice structures and topology optimisation, and is applied in aerospace, automotive and industrial engineering, among others. It is a Windows desktop application; licences are managed through cloud accounts and the app connects to cloud services for authentication and updates. The company started in 2015 as nTopology and has continued as nTop since 2023.
The developer, nTopology Inc., is based in New York in the United States and is therefore subject to US law. Design files are processed locally, but according to the privacy policy the service is hosted in the United States, which applies to account and licence data. The policy contains GDPR provisions and standard contractual clauses for transfers outside the EEA; it does not name a data processing agreement. European organisations handling sensitive design data should confirm the details of licence and update traffic with the vendor.