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SynergyKM is a GUI wrapper around the Synergy project. The goal of SynergyKM is to give users the most "Mac like" experience while using Synergy. Synergy lets you easily share a single mouse and keyboard between multiple computers with different operating systems without special hardware. It's intended for users with multiple computers on their desk since each system uses its own display. SynergyKM consists of a preference pane and menu extra. The installer includes the latest version of Synergy, so no extra downloads are required.

What's New

Version 1.0.1:
  • Now brings up warning dialog if accessibility permissions haven't been granted
  • Fixed issue with installer and menu extra when installing for "All Users"
  • Prefpane now uses ARC instead of garbage collection so it won't fail for some users
  • Minimum OS X version is now 10.7 (Lion) due to ARC switch
  • Fixed issue with "Apply changes" sheet freezing more...


  • OS X 10.7 or later

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SynergyKM User Discussion

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MirandaL3067 Member IconReview+0

Fantastic App! Easy setup!

I ran into an issue setting up which was my fault (I was on two different networks unknowingly), and the customer support was prompt, personal, and perfect. After spending 30 minutes troubleshooting SynergyKM on my own, Karl helped me isolate the issue to the network and it was resolved within 20 minutes of email correspondence.

Reply0 replies
Version 1.0.1
Lvalue Member IconComment+11

Version 1.0 doesn't properly install on my 2009 MBP with Mavericks on it. Either the installation fails or launching it crashes the System Preferences app. I've emailed the author and will reply to this thread once I get the reply.

Reply4 replies
Version 1.0

The author has replied in a matter of mere minutes and is troubleshooting it now.
He already fixed one of the problems (that it failed in installing for all users), yay!
It might be my system only, so please do install it and share your results.

Karl Timmermann (Developer)

Thanks for your patience, I'm working to resolve the issues ASAP. In the mean time, I recommend only installing for current user instead of All Users, otherwise, the "Open SynergyKM Preferences" menu item won't work for some reason.


The author has fixed the bugs during the weekend and it now works as advertised :) Yay!
But I encountered a small bug: the client name field didn't get updated on modification and I had to manually edit the plist and reboot.
I reported the problem and believe the author will fix it soon.
Happy SynergyKM'ing all!


Sorry for spamming the board, but the version here might have not been updated just yet. If so, please visit the author's site and download it there.

Steve Lessard Member IconComment+0
Steve Lessard

I had a heck of a time trying to figure out how to get the client and the server to connect with each other, but I finally figured it out. On the server (the computer that will be remote controlled) you have to add a screen for the client (the computer to which the physical keyboard and mouse are attached) AND you also have to add a screen for the server. Just give each screen the same name as your client and server machines. No additional screen configuration is necessary.

Reply0 replies
Version 1.0b7
Macerrific Member IconReview+2

Used Synergy and SynergyKM on Macs, PCs, Ubuntu ... all varying levels of operating systems ... for years! I love it... it's easily my favorite and most-used tool on every computer.

I fix comps for a living and being able to add a bunch of client machines to the mix just makes the fix-flow go so much faster.

SynergyKM just makes the features easier to access. If you want to get fancy and really customize things even more, you've got to go to the Synergy mothership.

See my troubleshooting note if you get an Applescript error after installing it.

Good luck!

Reply0 replies
Version 1.0b7
Mcallinder Member IconComment+1

I get the same thing, any fixes yet?

Reply2 replies
Version 1.0b7

Fixed the same problem as others -- the "Applescript system handler error" that keeps the control panel from launching, etc etc.

For me I went into my Sharing system preference and found that the Computer Name at the top had somehow been blanked out...normally you want a short one word (or hyphenated word) there which will identify your computer on a shared network. Once I filled in the name I wanted and exited, I was able to install and use SynergyKM.

If you don't have a name, add one. If you have one, change it to something simpler with no punctuation.

Go figure.

But this is the way the Synergy Server identifies each client so naturally your computer needs a name...

I've used Synergy and SynergyKM for several years now... love it love it love it love it love it love it love it. LOVE IT. Everytime I add a new machine to the mix and it starts working, it feels like nothing short of a techno-miracle. Full POWER.

Good luck kids.


I also got this fixed. Like MACERRIFIC suggested, I changed my computer name, but I also installed the latest version of Synergy+ on my mac in addition to SynergyKM. The latest Synergy+ can be found at http://www.synergy-foss.org/.

Unclehowlie Member IconComment+0

I installed SynergyKM with no problems on my mac mini, but when I tried to install it on my macbook it allows me but when I went to configure it it gives me a AppleScript Error "System Preferences got an error: AppleEvent handler failed.(-10000)".

SynergyKM shows in my system preferences, but system preferences quits any time I try to open SynergyKM.


both machines are running snow leopard and are up to date.


Reply0 replies
Version 1.0b7
Smahjub Member IconComment+0

I can't seem to get synergykm working on snow leopard as a server. It works fine as a client, but won't work as a server. I have a MB pro (leopard), Ubuntu, and an IMac(snow leopard). When I run the MB pro as a server and the Imac as a client, it works. But when I try to make the Imac the server, it just sits there waiting for connections. I have the firewall off in the system prefs. Please help?

Reply3 replies
Version 1.0b7

Did you ever solve this problem? I'm getting the same thing.
The error says:

Applescript Error
System Preferences got an error: AppleEvent handler failed. (-10000)


I am also having the same problem. SynergyKM runs as server on snow leopard (MBP 15") and it simply "waiting for connections" forever. No obvious information on the system log for nailing down the problem. Same settings work perfectly on leopard on the same machine, though.



I'm getting the same problem;

AppleScript Error "System Preferences got an error: AppleEvent handler failed.(-10000)".

Does anyone have a solution?

jonred Member IconComment+1

SynergyKM, where have you been all my life? I just spent an hour or two playing around with the command line synergy interface trying to get everything working with no success. I stumbled upon this program and was up and running in literally 5 minutes! Awesome!

My server is an XP machine. Clients are a Windows 7 RC computer and a Mac. Only thing I had to do to get it to work was use the servers IP address instead of its name. I had already set up the configuration of the screens on my server so everything was ready to go when I installed SynergyKM on the Mac. I now have a wall of monitors at my command. Five stars.

Reply0 replies
Version 1.0b6
ThorPrime Member IconReview+1

This is a must have if you use synergy. It saves a lot of time vs manually configuring files and having the status in the menu bar is a huge plus.

Reply0 replies
Version 1.0b6
truffuls Member IconReview+1

No matter what I did I could not get synergy to work on my new Mac Pro OS X 10.5.2. I tried every configuration I could find on the web, nothing worked. I'm comfortable working in a UNIX environment so that wasn't an issue. In every attempt I always got "Configuration not found".

I found a blog entry about SynergyKM, found the software and installed it.

Within a minute of install I was happily working with my XP machine using my Mac keyboard/mouse.

Works great!

Reply1 reply
Version 1.0b6

If you run `synergys -h` it will tell you where it's going to look for config files.

Usually: /etc/synergy.conf
or: /var/root/.synergy.conf

I use /etc/synergy.conf and it works fine.

user icon+12
Version 1.0
> 4 7


Current Version (1.x)


Downloads 45,194
Version Downloads 1,215
License Free
Date 25 Feb 2014
Platform Intel 64 / OS X
Price Free
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