I built this while helping a colleague migrate away from Outlook for Mac after a company acquisition. Outlook only exports contacts as .olm, and most tools we found were either paid or required uploading the data somewhere

Since emails and contacts are a pretty sensitive topic, I didn’t like that, so I put together a small local tool instead

It extracts contacts from an Outlook for Mac .olm file and exports them as CSV or vCard. There’s a CLI, plus a simple web UI that runs entirely client-side

Hope it helps someone else