eq30

EQ30 — Freeware Windows VST equalizer unit
Modeled on Alesis M-EQ 230 dual 1/3 octave precision equalizer
Bands: 2 complete 30 band 1/3 octave equalizers.
Band Boost/Cut: ±12dB.
Controls: 25 / 31 / 40 / 50 / 62 / 80 / 100 / 125 / 160 / 200 / 250 / 320 / 400 / 500 / 640 / 800 / 1k / 1.3k / 1.6k/ 2k / 2.5k / 3.15k / 4k / 5k / 6.2k / 8k / 10k / 13k / 16k / 20kHz levels.
Monitor: Input ▶, Gain ▲ , Output ▶ and Text Display.

http://www.discodsp.com/eq30/

1208 Audio has released 1208 GEQ, free graphic equalizer VST effect plugin for  Windows (64 bit).
A classic eleven band graphic equalizer with adjustable Q, individual band bypass, & a dab of mojo.

https://1208audio.com/1208-geq/

Q3D

Emulation of the NTI Nightpro EQ3D rack mount equalizer.

NTI Nightpro EQ3D is a 6-band equalizer that is best known for its boost-only “air” band which was designed for adding sheen and sparkle to vocals. The EQ also features extremely wide Q on all bands, resulting in pleasing, musical sounding boosts. Volko Audio’s free Q3D plugin emulates these features while aiming for optimized performance with a very low CPU hit. It is also completely free to download and use (activation required), unlike its hardware counterpart which costs anywhere between $1,500 and $1,800 in used condition.

Q3D copies the values and curves of each band found on the original NTI Nightpro EQ3D equalizer. The first five bands are set to 10 Hz, 40 Hz, 160 Hz, 650 Hz, and 2.5 kHz, whereas the “air” band comes with five preset cutoff frequencies (2.5 kHz, 5 kHz, 10 kHz, 20 kHz, and 40 kHz).

https://www.volkoaudio.com/product/q3d-eq/

Marvel GEQ by Voxengo

Marvel GEQ is a linear-phase 16-band graphic equalizer AU and VST plugin with multi-channel operation support (supporting up to 8 input/output channels, audio host application-dependent) for professional music production applications. This EQ can be used by audio engineers to apply quick EQ shape adjustments, both to audio tracks and full mixes.

http://www.voxengo.com/product/marvelgeq/

Jayqualizer

Jayqualizer is a parametric 8-band EQ that allows you to make certain settings for your mixdown-tracks. Each single band could be activated or deactivated. Sixteen presets and a visual spectrum analyser is also been given.

http://www.noizefield.com/partner-projects/dancelab

Sound Out of the Box

XTrack EQ32

XTrack EQ32 is a VST / VST3 audio effect plugin which provides an equalizer 32 bands with a low CPU usage.
Whereas most of equalizers support only stereo control, XTrack EQ32 gives you the possibility to control a Mono, a Stereo, a LRS, a Quatro and an 8.0 Music system.
Equalization presets can be saved in a specific file in XML format. These presets are editable and can be loaded easily by the plugin via its user interface.
XTrack EQ32 has also a vumeter for input and output signal.  http://www.soundoutthebox.com/xtrack_eq32_product.php