How to download Synergy 1 for an older Mac?

[patrick m 0]

I have an older Mac running OS 10.13.6.  I was using Synergy 1.  I can't upgrade this operating system on this computer.  I just installed Synergy 3 without realizing that my computer was too old to run it, so I need to reinstall Synergy 1.  Your download link for Synergy 1 appears dead.  How can I get a copy of Synergy 1?

[patrick m 0]

By visiting the Symless web site on the newer computer, I was able to download Synergy 1, so I am up and running again.  

Another related question: do I need the same version of Synergy on both networked computers (i.e. 1&1, or 3&3), or can I mix and match (1&3)?

[LaFemmeLoca 0]

I hope when you end of life Synergy 1 Pro that you will then figure out how to connect to macOS 10.13.6 because it is my second 'monitor' that I use for certain things and would love to continue to use it after 2028. Otherwise, I will have no need for your product. :(

[patrick m 0]

I agree with LaFemmeLoca: the whole reason I use Synergy is that I need access to an older program that won't run on anything newer than macOS10.13.6.

I'd still like to know if both computers need to run the same version of Synergy, or if I can use Synergy 1 on my old computer (running macOS10.13.6) and Synergy 3 on my newer computer (running macOS14.4.1).