Alternatives to Resilio Sync

Peer-to-peer file sync with no cloud server in the middle. The listings below can replace it for an important use case. Each note says what changes if you switch.

Replacements

Listings that take over the same core job as Resilio Sync.

  • Syncthing

    Keeps folders identical across your own machines, directly between them, with no cloud account in the middle.

    FreeOpen sourceWindowsmacOSLinuxCommand lineSelf-hosted

    Syncthing also syncs folders directly between your devices with no cloud server, but it is open source under MPL-2.0 and its official Android app was archived in 2024.

  • GoodSync

    Block-level file sync and backup with versioning and many back ends.

    PaidProprietaryWindowsmacOSLinuxAndroidiOS

    GoodSync adds block-level sync with versioning across many back ends and device-triggered jobs, but it requires a paid per-user licence and is also closed source.

  • Unison

    Synchronize two file collections while preserving changes from both sides.

    FreeOpen sourceWindowsmacOSLinux

    Unison is a free GPL-3.0 tool that syncs two file collections while preserving changes on both sides, with no mobile apps and less automation.

  • Nextcloud

    A file sync and collaboration server you run yourself, with desktop and mobile clients that behave like Dropbox.

    FreemiumOpen sourceWindowsmacOSLinuxAndroidiOSSelf-hostedWeb

    Nextcloud replaces peer-to-peer sync with a self-hosted GPL-2.0 server, so devices need not be online together, but you maintain updates, backups and certificates.

  • Seafile

    Self-hosted file sync and share with optional client-side encryption.

    FreemiumOpen sourceWindowsmacOSLinuxAndroidiOSSelf-hosted

    Seafile uses a self-hosted server with block-level sync and optional per-library client-side encryption, which adds a database and upgrade handling to manage.

  • git-annex

    A command-line tool that manages and syncs large files with git without storing their contents in git.

    FreeOpen sourceLinuxCommand line

    git-annex tracks where large files live across drives and remotes with checksums and encryption, but it is command-line focused with a steep learning curve for non-git users.

  • Dropbox

    The original file sync service, with clients on every platform.

    FreemiumProprietaryWindowsmacOSLinuxAndroidiOSWeb

    Dropbox syncs through its cloud service with clients on every platform, but its free tier is small and files are stored unencrypted from the provider's point of view.

Also worth comparing

These listings name Resilio Sync as their own alternative, so the relationship runs both ways.

  • FolderSync

    A folder sync app for Android and desktop that works with over 20 cloud providers.

    FreemiumProprietaryWindowsmacOSLinuxAndroid

    Resilio Sync syncs folders peer to peer between phones and computers without cloud storage, but both devices must be online at the same time.

  • FreeFileSync

    Compares two folders, shows exactly what differs, and copies only what changed.

    FreeOpen sourceWindowsmacOSLinux

    Resilio Sync syncs folders peer to peer between devices including Android and iOS, but it is closed source and both devices must be online at once.

  • Möbius Sync

    Third-party iOS app that brings Syncthing file synchronization to iPhone and iPad.

    FreemiumProprietaryiOS

    Resilio Sync also syncs directly between devices without a cloud server and has an iOS app, but it uses its own closed-source protocol instead of Syncthing.

Similar software

Related functionality, not a direct replacement.