# Syncthing Published January 1, 2026 · Updated August 10, 2026 Continuous file synchronization Category: System Utilities · Free · Open source · Replaces Dropbox ($12/mo) · [Official website](https://syncthing.net) ## Install with Homebrew `brew install --cask syncthing-app` ## Quick take If you want open-source P2P folder sync on Mac in August 2026, Syncthing is still the default pick. The v2 line and official macOS bundles are ready for daily use if you accept a technical setup and own your backup strategy. Choose it for sovereignty; choose Dropbox or iCloud for zero-ops convenience. Best for: Homelab and multi-Mac folder meshes, Privacy-focused users avoiding cloud storage vendors, Developers syncing large binary-heavy projects, Teams that already run Tailscale or VPN overlays ## What is Syncthing? Syncthing is a free, open-source continuous file synchronization program that syncs folders between computers in a peer-to-peer mesh without a mandatory cloud vendor. Devices discover each other (global discovery, local discovery, relays as fallback), encrypt traffic with TLS, and exchange only block-level differences. As of August 2026 Syncthing is very much alive. Base Syncthing is on the v2 line (downloads list v2.1.3 for macOS arm64 and amd64), while the official macOS application bundle (syncthing-macos) ships Sparkle-updated builds such as v2.1.2-1 that wrap the daemon with a menu-bar friendly UI. Syncthing v2 became the supported track for the official macOS app in February 2026 (v1 is deprecated and will not receive fixes). Migration from v1 involves installing the new bundle and allowing the database migration to finish on first launch. Mac users typically install via the official DMG (`brew install --cask syncthing-app`) rather than raw binaries. The web GUI remains at http://127.0.0.1:8384/ for folder configuration, device IDs, versioning, and ignore patterns. There is still no Syncthing Inc. storage fee: capacity is your disks, and the project is funded by the Syncthing Foundation and donations. Competitors in 2026 include Resilio Sync (proprietary P2P), Nextcloud/ownCloud (self-hosted cloud UX), iCloud Drive/Dropbox/Google Drive (centralized), Mutagen, and newer mesh tools some homelabbers pair with Tailscale for connectivity. Syncthing's differentiator remains zero vendor lock-in and full offline LAN sync when peers can see each other. Caveats: initial setup of device IDs and folder shares has a learning curve; mobile options vary (Möbius Sync on iOS is a common paid companion); and you are responsible for backup versioning and disk health. Syncthing is sync, not a substitute for backups. ## Features - **Peer-to-Peer Encrypted Sync.** Devices connect directly when possible, with relaying only as fallback. All traffic is encrypted. No central storage of your files on Syncthing servers. - **Block-Level Delta Sync.** Only changed blocks transfer, keeping large folders efficient after the first full pass. Ideal for photo libraries, code checkouts, and VM images. - **Versioning & Conflict Handling.** Optional file versioning retains previous copies when changes or conflicts occur. You choose simple, staggered, or external versioning strategies per folder. - **Ignore Patterns & Selective Sync.** .stignore patterns exclude build artifacts, node_modules, and secrets. Share only the folders you choose with specific device IDs. - **Official macOS App Bundle (v2).** syncthing-macos wraps the daemon with a native-ish app experience, menu bar control, and Sparkle auto-updates. v2 bundles require at least macOS 12 and are the supported path since February 2026. - **Cross-Platform Mesh.** Clients exist for macOS, Windows, Linux, BSD, and Android; iOS users often use third-party clients such as Möbius Sync. Mix hardware freely inside one trust mesh. - **Web GUI & REST API.** Full configuration via local web UI and automation via API, useful for headless Mac minis and scripted fleet setup. ## How to Install Syncthing on Mac You can install Syncthing on macOS as a command-line service via Homebrew (good for background daemons) or as a GUI wrapper that puts a native-feeling icon in the menu bar. Both paths reach the same web control panel. 1. **Option A: Install via Homebrew (Recommended for CLI/Service).** Open your Terminal. If you have Homebrew installed, simply run the command `brew install --cask syncthing-app`. This installs the core binary (v2.0.16). To have it start automatically when you log in, run `brew services start syncthing`. This runs Syncthing as a background service managed by launchd. 2. **Option B: Install Syncthing for macOS (GUI Wrapper).** Download the 'Syncthing for macOS' DMG from the official GitHub releases page. Drag the application to your Applications folder. When you open it, it will add a Syncthing icon to your menu bar, manage the background process, and provide quick access to the Web GUI and log files. This is often more user-friendly for non-technical users. 3. **Access the Web Interface.** Once installed and running, open your web browser and navigate to `http://127.0.0.1:8384`. This is the local control panel for Syncthing. From here, you will configure your folders, add devices, and manage settings. The first time you access it, you will be prompted to set a username and password for the GUI, which is highly recommended. ## Pros - No cloud vendor lock-in or per-GB fees - Strong encryption and peer-to-peer architecture - Active v2 releases through 2026 with official macOS bundles - Excellent for multi-machine homelabs and air-gapped LAN sync - Ignore patterns, versioning, and API automation - Works on Apple Silicon and Intel Macs ## Cons - Setup is more technical than Dropbox-style apps - Not a backup system by itself; you must design versioning and redundancy - iOS requires third-party clients rather than an official free app - Relay-dependent remote sync can be slower than centralized CDNs ## How Syncthing moves data without a vendor cloud The protocol choices explain why a mesh of ordinary disks can outlast cloud-sync pricing models. ## FAQ ### What is the latest Syncthing version in August 2026? Base Syncthing downloads list v2.1.3. The official macOS application bundle has published v2.1.2-1 (and may lag the base release slightly). Prefer v2 builds; v1 is deprecated. ### Is Syncthing free? Yes. The core software is free and open source with no storage subscription. Optional third-party mobile clients may charge separately. ### Does Syncthing work on Apple Silicon and macOS Tahoe? Yes. Official macOS arm64 builds and the app bundle support modern macOS including Apple Silicon. The v2 macOS app requires macOS 12 or newer. ### How do I migrate from Syncthing v1 to v2 on Mac? Download the latest syncthing-macos release, replace the app in /Applications, launch it, and wait for the database migration to finish in the web UI before heavy syncing. ### Is Syncthing a backup tool? No. It synchronizes live folders between devices. Use versioning plus separate backups (Time Machine, restic, etc.) for ransomware and deletion protection. ### Does Syncthing upload my files to a company cloud? No. Files stay on your devices. Discovery and optional relays help peers connect but do not store your data. ### How does Syncthing compare to Resilio Sync? Both are P2P. Syncthing is open source and free; Resilio is proprietary with paid features and a smoother consumer veneer. ### Can I use Syncthing with Tailscale? Yes. Many users put devices on a Tailscale tailnet so Syncthing peers always have a stable private path, reducing reliance on public relays. ## Sources - [Syncthing Downloads](https://syncthing.net/downloads/) - [syncthing-macos releases](https://github.com/syncthing/syncthing-macos/releases) - [syncthing-macos README](https://github.com/syncthing/syncthing-macos) - [Syncthing documentation](https://docs.syncthing.net/) - [Syncthing forum, macOS road to v2](https://forum.syncthing.net/t/syncthing-for-macos-the-road-to-v2-official-application/26060) - [Homebrew Cask syncthing-app](https://formulae.brew.sh/cask/syncthing-app) - [Syncthing project site](https://syncthing.net/) ## Related - [Maccy](https://bundl.run/apps/maccy) - [Stats](https://bundl.run/apps/stats) - [SuperWhisper](https://bundl.run/apps/superwhisper) - [MacWhisper](https://bundl.run/apps/macwhisper) - [HyperWhisper](https://bundl.run/apps/hyperwhisper) - [Aqua Voice](https://bundl.run/apps/aqua-voice) - [Free alternative to Dropbox](https://bundl.run/https:/) ```json { "@context": "https://schema.org", "@graph": [ { "@type": "Organization", "@id": "https://bundl.run/#organization", "name": "Bundl.run", "url": "https://bundl.run", "logo": { "@type": "ImageObject", "url": "https://bundl.run/og-image.png", "width": 1200, "height": 630 }, "description": "The Ninite for Mac. 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