Anwida is nice, as are many other free reverbs.

My favorite is Ambience, because of all the control.
Pre-reverb EQ, another EQ/Filter on the reverb output, room size and delay, cutoffs .. just lots of control over the sound. Plus it has a MIDI Learn feature so you can control via MIDI if desired.
Anwida is much simpler.

http://magnus.smartelectronix.com/#Ambience
Get the Full version. He worked with PGMusic to optimize this plugin for their products and is nag-free.

The other plugins on this page are pretty good also, with Nyquist being a fairly unique EQ. Again, a lot of control.
The downloads here have been safe for many years, but as always use caution and pay attention during install. I've not had to re-install it for years.

I do not work here, but the benefits are still awesome
Make your sound your own!