copyparty
copyparty is a portable file server that provides accelerated resumable uploads, deduplication, WebDAV, FTP, zeroconf, media indexing, video thumbnails, audio transcoding, and write-only folders. It is for people who need to move, store, and share files through file-serving protocols, with upload recovery for interrupted transfers and deduplication for repeated data. The server comes as a single file and has no mandatory dependencies, which keeps the basic setup portable. WebDAV and FTP provide file access, while zeroconf supports discovery on compatible networks. copyparty can index media, generate video thumbnails, and transcode audio. Write-only folders provide a separate option for locations intended to receive files. A limitation for media workflows is that video support covers thumbnail generation, while transcoding is available only for audio. No specific paid product replacement is known from the available facts.