Synergy 3 Alpha 1

Synergy 3 is such a departure from both Synergy 1 and Synergy 2 that we do not advise having them installed in the same system at the same time.

For this reason, Synergy 1 will be automatically uninstalled on Windows during the installation of Synergy 3. However, we won’t delete your config file, so if you ever want to go back to Synergy 1 you should be able to restore your current configuration.

If you have Synergy 2 installed on Windows, or if you’re using macOS or Linux, you should uninstall Synergy 1/2 manually.

Also, you’ll need to install Synergy 3 on every computer you want to connect.

On Windows 10

Download and install the latest Microsoft C++ redistributable
Double click the .msi file you have downloaded above
Click Run anyway if a pop-up appears with the message "Windows protected your PC"
Click Next on the "Welcome to Synergy 3" screen
Click Next on the "Destination Folder" screen
Click Install on the "Ready to install" screen
Click Yes on the pop-up that appears with the message "Do you want to allow this app from an unknown publisher to make changes to your device?"
Click Yes on the pop-up that appears with the message "Do you want to allow this app to make changes to your device?"
Click Finish in the "Complete the Synergy (64-bit) Setup Wizard" screen

On macOS

Double click the .dmg file you have downloaded above
Drag the Synergy icon (on the left) on top of the Applications folder icon (on the right)
Double click the Applications folder icon and double click Synergy in the new window
Click Open in the pop-up that appears with the message: "Synergy is an app downloaded from the internet. Are you sure you want to open it?"
Input your computer's password in the Synergy Password Prompt pop-up and click OK

Once you install Synergy on a second machine, you'll need to allow Synergy on macOS Accessibility permission list before you can share the mouse/keyboard between the two

Go to macOS System Preferences > Security & Privacy > Privacy > Accessibility
Click the checkbox next to synergy-service (in case it is not checked yet)
If you don't see synergy-service on that list, it probably means that Synergy didn't find any other computers yet, so please make sure you have installed and configured Synergy on every machine.
If you still don't see synergy-service on the list, click the + icon, hit Shift + Command + G, paste /Applications/Synergy.app/Contents/pkg/synergy-service in the dialog box that appears, and click Open
Repeat the above steps on every macOS computer that you want to connect

If you want to use Synergy on the login screen on macOS, you might need to add another Accessibility permission

Go to macOS System Preferences > Security & Privacy > Privacy > Accessibility
Click the + button, press Shift + Command + G keys, paste /Library/PrivilegedHelperTools and press enter
Select synergyc from the folder browser, and click Open
The Synergy client should now work at the login screen (log out to try it)
Repeat the above steps on every macOS computer where you want to use Synergy on the login screen

On Linux

How to install on Linux

Double click the .deb or .rpm file you have downloaded above
Click Install
Input your password and click OK
Debian: If that doesn't work, try running the command (assuming the .deb is in your Downloads folder)
- sudo apt install ~/Downloads/synergy_3.0.36_amd64.deb

Quick fix (how to get the service running)

If you just need to get it working quickly, you can run the service directly.
If you want the long-term solution, then skip to 'What you should probably do'.
For the quick fix, open a terminal window, run the following command and do not close the process:
- /opt/Synergy/pkg/synergy-service -d

What you should probably do (but don't have to)

Create a file in ~/.config/systemd/user/synergy3.service (you might need to create the folder as well)
Paste the following content into the file you created on step 5 and save it:
- [Unit]
  Description=Synergy 3 Service
  BindsTo=graphical-session.target
  Wants=graphical-session-pre.target
  After=graphical-session-pre.target
  [Service]
  ExecStart=/opt/Synergy/pkg/synergy-service -d
  WorkingDirectory=/opt/Synergy/
  Restart=on-failure
  RestartSec=1
  StandardOutput=syslog
  StandardError=syslog
  [Install]
  WantedBy=graphical-session.target
Open a terminal window and run the following commands:
- systemctl --user daemon-reload
- systemctl --user enable synergy3.service
- systemctl --user start synergy3.service

We’ve been hard at work trying to develop a completely overhauled version of Synergy that we hope our users (both novice and advanced) will deeply enjoy.

However, we are a small team, and we’re also committed to improving Synergy 1 until Synergy 3 is ready for primetime, so there are still quite a few issues with Synergy 3 (that’s why it’s still a Super Early Alpha 😅 ).

We are aware of these and working hard to fix them shortly, but we still encourage you to let us know if you run into any of the following issues:

Connecting with TLS is not available (even when the setting is enabled on the Preferences).
Copy and paste of text, images, and files between computers might be very unreliable (only basic copy and paste functionality was properly tested).
Auto-detect is working unreliably: sometimes it will only work after you interact with the Screen Layout page and there are some unsupported scenarios when connecting 3 or more computers.
On Windows, when the main window is closed/minimised there is no tray icon.
In some cases, you might be able to select "Use this keyboard and mouse" on more than one machine, which will result in not being able to use the keyboard and mouse from any of the computers.
Using hostname when setting up a new manual connection will not work.
There is currently no way of removing a computer after it has been added to Synergy.
Under Computer Preferences, all of the following options might not work as expected: Dead Corners, Fixes, and Modifier Keys.
Hotkey Configuration is heavily untested and should be assumed as not working correctly at the moment.
Also, don’t worry if the hotkeys button looks like it’s doing nothing… it’s just waiting for you to press a key (we're looking into improving that interface on future versions).
Although you may see some references to the following in the interface, they are not yet implemented and will not work at the moment: Pause Computer, Refresh Connection, Auto restart core, Local networking controls.

NOTE: A good way to get out of some of these situations is to open Synergy, go to "System preferences" > click "OPEN RESET OPTIONS", and follow the reset instructions.

Release notes

How to install

How to uninstall

Known issues

How to send us feedback