Open Source Resilio Sync Alternatives
A curated collection of the 1 best open source alternatives to Resilio Sync.
The best open source alternative to Resilio Sync is Spacedrive. If that doesn't suit you, we've compiled a ranked list of other open source Resilio Sync alternatives to help you find a suitable replacement.
Resilio Sync alternatives are mainly Databases but may also be File Management & Sync or Storage Solutions. Browse these if you want a narrower list of alternatives or looking for a specific functionality of Resilio Sync.
Cross-device file manager that indexes local disks, clouds and external sources into one searchable library synced directly between your machines.
Spacedrive is a cross-device data platform that indexes files, emails, notes and external sources into a single searchable library. It sits above the operating system file manager rather than replacing it, adding the cross-device, cloud-aware layer Finder and Explorer lack.
Every file receives a BLAKE3 content hash, so the same file on two machines produces the same identity and the system tracks deduplication and redundancy across a fleet. Devices connect directly over Iroh and QUIC with no server in between, syncing metadata while files stay where they are, and a disconnected device stays in the index marked offline.
Several layers sit on top of that index.
- Cloud volumes: S3, Google Drive, Dropbox, OneDrive, Azure and GCS are indexed as first-class volumes beside local storage.
- Archival adapters: Gmail, Apple Notes, browser bookmarks and history, Obsidian, Slack, GitHub, calendars and contacts each become searchable repositories.
- File intelligence: OCR, transcripts, metadata, thumbnails, previews and classifications attach to records as derivative data.
- Transactional actions: an operation is previewed with space savings and conflicts before it runs, then becomes a durable job surviving restarts.
- Safety screening: a local classifier flags prompt injection in indexed content and quarantines records before an agent can query them.
The implementation is a single Rust crate on SQLite, Tokio and OpenDAL, with a Tauri desktop app and a React Native mobile app sharing generated types. An optional agent runtime called Spacebot pairs with one node that authenticates it, resolves permissions and forwards operations to peer devices. Apps ship for macOS, Windows, Linux, iOS and Android.
