https://fineclassicsplugins.com/pages/subtle-spaces-free-plugin
Subtle Spaces by Fine Classics Plugins
Dive deep into 15+ unique rooms to place your tracks in – or experiment with 40+ presets. The plugin also includes width to improve your stereo image even more, and a pre-delay to adjust the rooms to suit your song perfectly.
VST

Newfangled Audio released a new free plugin. There’s a catch though, you need to solve a riddle. I won’t spoil it for you, it says it is free forever so no rush.

newfangledaudio.com/secret-plugin

Yum Audio Ember Synth
https://www.yum-audio.com/Ember/

Ember is available now from Yum Audio, an unparalleled vibe machine for music makers from all edges of every genre!
Starting today, Ember is available for purchase for $129