input-leap VS synergy-core

There is an actively developed fork https://github.com/input-leap/input-leap, however that fork is still undergoing heavy development and recommends sticking with Barrier until they're able to release v3.0.0 which they expect rather soon.

barrier is basically a dead project now. The active members of the project forked it and are going to release when ready but

https://github.com/input-leap/input-leap

Keep an eye on that for anything new

There's a new fork of barrier called input leap (not to be confused with the leap motion), https://github.com/input-leap/input-leap with work on getting Wayland support in shape. Not sure how far the support is atm, but the gnome 45 release notes mentioned "Wayland support for Input Leap" (https://release.gnome.org/45/)

Wayland tracker issue, https://github.com/input-leap/input-leap/issues/109

I wonder if I would be better off just buying a LG monitor without the Smart KVM, and instead using Barrier (or, Input Leap, which seems to be maintained actively compared to Barrier https://github.com/input-leap/input-leap)

Could also be worth mentioning that Barrier is basically unmaintained at this point so you'll probably never get Wayland support there. The maintainers (apparently the owner of the debauchee/barrier dropped off the face of the earth) of Barrier forked it and migrated to input-leap (issue with details if interested) which is where all development is presently, although they haven't made a release yet.

I'm already using waynergy with input-leap as my main way to control the laptop when it is docked. It is amazing.

No one has mentioned ShareMouse yet? (https://www.sharemouse.com/) In my experience it has worked way better than Synergy. I switched after getting fed up with the synergy developers not responding to various multi-year old bugs that made the software unworkable for me (e.g. https://github.com/symless/synergy-core/issues/5992).

The only downside is that you have to "renew maintenance" to continue receiving updates to ShareMouse after a year. But I haven't done that yet and it still works fine for me.

I want to be able to do things like Synergy, Steam Link, Unified Remote, and Media Servers between any of these devices, with as little added latency as possible (especially important for steam link)

i've got several fedora linux machines running and sharing their monitors via synergy (https://symless.com/synergy) , all controlled by the keyboard/mouse on the primary synergy server.

Not sure if this is what you're asking, but I've been using Synergy Pro (Windows, macOS, Linux) for years, and it works seamlessly. It lets you share your mouse and keyboard across multiple systems (with or w/o encryption), copy and paste between computers, etc.

I've got an M2 MacBook Air

Per the Advanced... screen under Displays in System Settings, you can link to a Mac or iPad to control it a la Synergy[0]

I have not done it myself, but I do not see why you could not do it with a current-gen Mac Mini

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[0] https://symless.com/synergy

I previously used a software solution to do the same thing and it was actually really good, better even. It might have been this software but I have to check to be sure - https://symless.com/synergy - as I’m not at my laptop right now.