One excellent option is the (GUI) based tool to
convert NSF contacts to VCF format that is the
WholeClear NSF to VCF Converter. This tool is a simple, graphical user interface (GUI) tool that requires no coding skills to convert Lotus Notes (NSF) contacts to VCF (vCard) format.
Its user-friendly interface makes it simple to export all of your contacts to VCF files with a few clicks and import NSF files. Using it doesn't require any technological knowledge. All Lotus Notes versions are compatible, batch conversion is supported, and all contact information is preserved. To make the product ideal for all users, it also provides a free demo version that may be used before buying.