CopySync / Download

Download CopySync

Free and open source, version 1.6.4. Install it on each computer you want to sync; Mac, Windows and Linux mix freely.

Download the installer

Rather not run an installer? Get the portable zip, extract it and run CopySync from there.

Run CopySync-Setup.exe. It installs for the current user, no administrator rights needed.If you see "Windows protected your PC", click More info, then Run anyway.
Open CopySync and click Turn on background sync. Allow it if Windows Firewall asks.

Apple silicon (M1 and later) Intel

A universal version that runs on both is also available, at twice the size.

Open the DMG you downloaded and drag CopySync into Applications.
Open it from Applications.The first time, macOS says it can't verify the developer: go to System Settings → Privacy & Security and click Open Anyway near the bottom.
Click Turn on background sync. When macOS asks about clipboard access and finding devices on your local network, allow both.

Click the Apple menu in the top-left corner of the screen and choose About This Mac.
"Chip: Apple M1" (or M2, M3, M4…) means Apple silicon; "Processor: … Intel Core …" means Intel.
Almost every Mac bought since late 2020 has Apple silicon. If you pick the wrong one, just download the other: on an Apple silicon Mac the Intel version needs Rosetta installed first, and the Apple silicon version won't open on an Intel Mac.
Requires macOS 13 Ventura or later.

x64 ARM64

sudo apt install ./CopySync-linux-amd64.deb

x64 ARM64

tar xzf CopySync-linux-amd64.tar.gz
./CopySync/install.sh

Needs a graphical desktop: X11, or Wayland with XWayland, which GNOME, KDE and other major desktops include by default.
Not sure whether you have x64 or ARM64? Run uname -m in a terminal: x86_64 means x64, aarch64 means ARM64.
The .deb installs to /opt/CopySync and adds CopySync to the app menu. The tar.gz runs from wherever you extract it, and install.sh adds it to the app menu.
Once it's open, click Turn on background sync; from then on it starts when you log in. GNOME shows no tray icon by default, so open the window from the app menu.
Needs GTK 3. Tested on Ubuntu 24.04 with GNOME (Wayland).

Server: Two computers on the same network need no server. The ways to connect across networks are in the quick start; each guide has its own server download.
Checksums: SHA-256 checksums of every file are in SHA256SUMS.
What's new and older versions: See the release notes for what changed in this version; older versions are on GitHub Releases.

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