Sync-in is an open-source, self-hosted platform for file storage, synchronization, and team collaboration. You can manage files, share them securely, and collaborate on documents using integrations with Collabora Online, OnlyOffice, and Euro-Office.

It supports WebDAV, desktop and CLI clients, full-text search, MFA, LDAP/OIDC authentication, and fine-grained permissions, giving you control over your data and infrastructure.

More Details & Alternatives: https://digitalescapetools.com/tools/syncin.html