Debian packages for mate-desktop with gtk3 and custom panel theme(now with Wayland support) : Luke : Free Download, Borrow, and Streaming : Internet Archive
Arch Linux Users Can Now Test MATE 1.9.x with GTK3 Support
GTK3/4 Themes - Gnome-look.org
How to Install the GTK3 Version of MATE on Arch Linux - Make Tech Easier
Mate Menu support (GTK3) · Issue #730 · numixproject/numix-gtk-theme · GitHub
GTK3: Changing the overlay/momentium scroll bar - Development Discussion - Ubuntu MATE Community
Horrible GTK3 / GNOME UI design is leaking into Ubuntu Mate applications in 20.04 - Thoughts & Feedback - Ubuntu MATE Community
Devil - Luna [formerly Luna-15-04] MATe and XFCE Ylmfos like - Gnome-look.org
Human GTK3 - TraditionalHumanized Themes - /s/Mate
MATE Desktop 1.16 Released With Improved GTK3 Support - OMG! Ubuntu
GTK3/4 Themes - /s/Mate
Bluecurve GNOME/MATE Theme - Eyecandy for your XFCE-Desktop - xfce-look.org
Mint-XP (GTK3, GTK2 & metacity pack) - /s/Mate
Blueshell (Bluecurve GTK3) - /s/Mate
Debian packages for mate-desktop with gtk3 and custom panel theme(now with Wayland support) : Luke : Free Download, Borrow, and Streaming : Internet Archive
How to Install the GTK3 Version of MATE on Arch Linux - Make Tech Easier
MATE Desktop 1.18 Released, Is Now GTK3 Only - OMG! Ubuntu