Syncthing
File Sync & StorageContinuous peer-to-peer file synchronization
Replaces Dropbox, Resilio Sync
Best Offline-First File Sync & Storage for self-hosting
The 17 best Offline-First file sync & storage you can self-host, ranked by community traction.
LocalSend
File Sync & StorageShare files to nearby devices without the internet
Replaces AirDrop
Spacedrive
File Sync & StorageCross-platform file explorer powered by a virtual filesystem
Replaces Google Drive, Dropbox
Kubo (IPFS)
File Sync & StorageReference implementation of the InterPlanetary File System
Replaces Dropbox
ShareDrop
File Sync & StoragePeer-to-peer file transfer in the browser
Replaces AirDrop, WeTransfer
qrcp
File Sync & StorageTransfer files to and from phones by scanning a QR code
Replaces AirDrop, Snapdrop
Resilio Sync alternative Onionshare
File Sync & StorageAnonymous file sharing over the Tor network
Replaces WeTransfer, Dropbox
closet GoToSocial NoNo upspin
File Sync & StorageGlobal name system for secure file sharing
Replaces Dropbox
Unison
File Sync & StorageBidirectional file synchronizer with conflict detection
Replaces Dropbox
Flying Carpet
File Sync & StorageWireless file transfer between devices with no shared network
Replaces AirDrop, Snapdrop
SparkleShare
File Sync & StorageGit-backed file synchronization with version history
Replaces Dropbox
Kinto
File Sync & StorageGeneric JSON document store with built-in synchronization
Replaces Firebase
Syncthing Android Wrapper
File Sync & StorageOfficial Android client for Syncthing sync
Replaces Dropbox, Google Photos
Nextcloud Desktop Sync
File Sync & StorageOfficial desktop sync client for Nextcloud
Replaces Dropbox, OneDrive
git-annex
File Sync & StorageManage and sync large files with Git without storing contents
Replaces Dropbox
Syncany
File Sync & StorageEncrypted file sync to arbitrary storage backends
Replaces Dropbox, SpiderOak
FreeFileSync
File Sync & StorageFolder comparison and synchronization tool with a GUI
Replaces Dropbox, rsync
No apps match these filters.
Every option here is open-source and self-hostable, tagged Offline-First within the file sync & storage category. Compare them on the individual app pages for setup difficulty and resource requirements.