Dropbox/Google Drive/OneDrive all dominate file sync. OSS alternatives let you keep your files on your own servers — critical for privacy, EU GDPR, sovereignty.
Nextcloud is the comprehensive self-hosted suite — files, calendars, contacts, video chat, office suite (with Collabora/OnlyOffice), photos, all on your own server. Used by EU governments.
github.com/nextcloud/serverNextcloud is the comprehensive self-hosted suite — files, calendars, contacts, video chat, office suite (with Collabora/OnlyOffice), photos, all on your own server. Used by EU governments. The dominant OSS pick.
You want a comprehensive self-hosted productivity suite that replaces Dropbox + Google Workspace.
You only need file sync without the office/calendar bloat.
Syncthing is peer-to-peer file sync. No central server, no cloud — devices sync directly. Best for personal sync between your own devices (laptop ↔ desktop ↔ phone).
You want device-to-device sync without any cloud middleman.
You need shared team folders or web access — Nextcloud is the answer.
Seafile is faster and lighter than Nextcloud — pure file sync without the office-suite bloat. Better for teams that just need shared folders + version history.
You want fast, lean self-hosted file sync without the kitchen-sink approach.
You need calendars, office docs, video chat too — Nextcloud is more complete.
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