Xfce 4.14
I stopped using GTK applications a while ago, so I don't use XFCE anymore, but I still love it, just... from a distance. It's an increasingly uncommon breed of software, which gets better with every release. No pointless shuffling of user interface features in the name of UX "innovation", no rationalizing bugs so that they look like deliberate design choices, just steady improvement. All this by an independent team with basically zero funding.IMHO, XFCE is one of the few relatively well-known projects that still embodies the spirit of free software as we once knew it. Kudos to the quiet and tenacious people behind it, who still manage to come up with one quality release after another, so many years down the road.If you want to support (at least some of) their work, Sean Davis has a Patreon account: https://www.patreon.com/bluesabre . Sean is one of XFCE's core developers and the Xubuntu tech lead. I don't know if there's a more official XFCE donation sink (this one is the only one I know of), but hey, it would be a great start!