PsiTransfer is a self-hosted file sharing application designed for fast and easy transfer of files between devices without the need for an internet connection or user accounts. It enables users to securely share files over a local network or via direct connections, featuring a simple and clean web interface that supports drag-and-drop uploads and generates shareable links with customizable expiration settings. PsiTransfer focuses on privacy and control, allowing users to host their own instance to keep data safe and ensure transfers remain within their trusted environment.