Homekit doesn't exist on the Mac as far as I know, and it's missing in action in Sierra too.
There's a decent Hue app on the Mac App store called Chroma which is worth a look. Other than that though, I haven't found much.
So from a Technical standpoint, the problem with introducing HomeKit control on a Mac, is that pesky thing called security.
If your Mac had HomeKit control, then your home could be hacked. A Personal Computer is more likely to be remotely controlled by malware/trojans, than a (non-jailbroken) iOS device. This would negate Apple's whole stance on implementing the HomeKit encryption hardware on all HomeKit compatible devices.
Yes, it's a pain that Sierra can't control HomeKit, but it's much more secure that way.
I would imagine that at some point they will have to do something about it, but that will likely require new hardware that contains hard-wired Homekit encryption chips. Most probably in new computer releases, but maybe in a new magic keyboard, with a Siri button (like the Apple TV Siri Remote)?
Sorry to resurrect this old thread but seemed better than starting a new one. Anyway I been renovating my bedroom since around the time Sierra was released and just finished and hooked up my Hue again. Noticed no Homekit support and was a bit stunned Siri didn't work here. Anyone know why? Seems a bit odd and unfinished seeing it's been on iOS for a few releases now. Certainly it can't be a hardware issue.
Why couldn't it use the AppleTV or iPad to do it then? Just like your phone or AppeTV remote currently works...
Which Hue system do you have?
Edit to add: if your system is older it isn't HomeKit compatible, you will need to purchase a new hub: http://www2.meethue.com/en-us/productdetail/philips-hue-bridge
That's why HomeKit devices are more secure, because of their encryption chip. The devices that were hacked to take down Dyn a few weeks ago were all non-HomeKit, mostly Chinese origin DVRs, with hard-codes passwords!
Not to burst your bubble, but macOS is extremely hardened to hackers for multiple reasons. I actually am a network technician, and am constantly trying to bust in to the machines I manage.
However, I would like to point out that by saying HomeKit devices are more secure because of their encryption chip- your argument is invalid as MacBooks now ship with the same Secure Enclave (which is the proper term for this encryption chip) as the other devices. (Which the AppleTV actually doesn't have.) Now, another point. You mentioned that macOS is more apt to get hacked because it's an open operating system. Yes, it does have open sourced components, yes that means there could be more vulnerabilities. But if you know anything about development on macOS you know that in order to write a program that interfaces with apple's kits- it has to enable the entitlements. Which means it has to be signed by a registered developer. Which means if someone writes malware against HomeKit- not only will Apple block the entitlement, taking away that app's access to the HomeKit APIs, it will also block the developer. Meaning that developer (or team) can no longer release or sign applications.
Sorry for the necro, I just can't stand ignorance and am trying to get HomeKit working on my Mac, and came across this.