The subject says it all, is there a link that shows all games supported so far by GoG Connect, I could only redeem Project Zomboid so far, but I would really like to know if it's actually the only game I can import. If someone could post such a link, it would be appreciated, thanks.

You just have to go here:

https://www.gog.com/connect

Be logged in with your Steam account, and all currently supported games will be shown.

Which, as you can see, currently shows all zero games that are currently supported.

You and me and everybody else are watching this space to see how that evolves.

The GOG connect games are available for a limited time. Currently, there is none for offer. For all the games that have been featured so far, you could check a GOGmix like this one below:
https://www.gog.com/mix/games_on_gog_connect

This is where I've reclaimed Zomboid, the thing is that in the box where I press that refresh button it says that there isn't any eligible game found, but that's actually correct. Same thing with the "Your available games" section. The thing is that in the Unavailable games section, there isn't anything, just a blank space (the purple background). I don't see any single game and it says that both my Gog and steam accounts are connected. Does the link shows the games that are actually offered "right now" (like you said, maybe there aren't), or only those that are over? Anyway, thanks for the link

Like I said, only those that have been offered so far. Currently, you can't claim any other game through GOG connect. This might or might not change in the future, so keep checking the connect page every once in a while.

Can someone please share the full list of currently available games right here? I keep trying to make GOG Connect sync with my Steam account, but it takes a lot of time. I would love to know beforehand if it's worth it, but it shows available games only after sync.

There are none at the moment.

Not true. It always shows the currently available games at the bottom of the page, and as classicgogger said, there are none at the moment. What it shows in addition to that after sync, is which of those available games it has found on your Steam account, that you don't already own on GOG. Which means that right now, that part of the page will also show nothing, since there are none.

Got it, thanks! It's just that for the first time, when Connect was launched, it didn't show me the list until the sync was complete, so i thought it's still the case.

There are few GOG mix which has list of games that were once available.

I really want them to add in Witcher 3 would be really nice

Right now the list of games available is: none

Games I'd like to add to GoG Connect:

*No Man's Sky
*Divinity Original Sin Enhanced Edition
*Pillars of Eternity

Let me import those,pretty please : 3

yeah man
, i feel that