dr analyzer

DRAnalyzer is a VST spectrum analyzer that can analyze the dynamic range for each band. Although the normal spectrum analyzer can display only the instantaneous value of the spectrum, DRAnalyzer can display the past spectrums as a distribution. Since it is possible to see the dynamic range for each band from the distribution, compatibility with multiband compressors is outstanding. You can optionally correct the spectrum according to the human auditory characteristics, so you can see the sound as it is heard.

https://bakuage.com/en/vst/

SocaLabs Oscilloscope

Stereo Oscilloscope
Negative or positive edge trigger
Adjustable trigger level
Y Offset per channel


http://socalabs.com/analysis/oscilloscope/

SIR spectrum analyzer

SpectrumAnalyzer is a state-of-the-art spectrum analyzer plugin, which offers a lot of opportunities to display the spectral content of your audio material and helps you create a better mix this way. SpectrumAnalyzer comes in two editions, a free and a full version.
SpectrumAnalyzer uses modern and reliable technics to analyze your audio material. It has a FFT (Fast-Fourier-Transform) and an analog-style (parallel band-pass IIR filter) engine, both of which can run simultaneously. So you can benefit from the more accurate time resolution of the band-pass filters and the better frequency resolution of the FFT at the same time. Check out the cool intelligent peak-detection, which automatically detects resonant frequency peaks in the signal. Use the snapshot function to easily save the current state of your analyzer, so you can compare the spectral profile of your current project with other songs. SpectrumAnalyzer also includes a VU-Meter (with peak and RMS measurement) and a Stereo Correlation Meter.

http://www.siraudiotools.com/Spectrum-Analyzer.php

Melda MOscilloscope

MOscilloscope is a powerful oscilloscope equipped with a pitch detector:
simply – wow! This thing delivers that WOW factor right out of the box.With most oscilloscopes, you’d have to do some manual work first in order to zoom onto the desired section of the waveform. But MOscilloscope does all the hard work for you, thanks to its built-in pitch detector which locks on to a single cycle of the waveform like a boss. 
n addition, MOscilloscope packs all of the great features found in MeldaProduction plugins, such as a fully customizable and resizable user interface, precise input monitoring, GPU acceleration, and so on. They’ve really improved the visual style of their plugins with the last few updates, making them compatible with absolutely any screen size and workflow you can think off.

https://www.meldaproduction.com/plugins/product.php?id=MOscilloscope

 

Seven Phases Spectrum Analyzer

Seven Phases Spectrum Analyzer is a real-time spectrum analysis VST plugin. The idea was to create an old-fashioned tool reminiscent of classic hardware analyzers of the earlier centuries. Unlike most of other analyzers available these days, this plugin is not FFT-based but utilizes a filter-bank algorithms that mould its unique pros and cons.

https://sevenphases.wordpress.com/spectrum-analyzer/

CL36 Multi-Band Clipper

CL36 is the latest release from J1000, a developer who has provided several truly fantastic freeware mixing tools in the past couple of years. His superb BTQ2 “twist” equalizer was included in BPB’s latest round-up of freeware VST plugins and the CH4D chorus effect is featured in our round-up of the best free chorus plugins. Since the new CL36 is such a unique clipper effect (at least on the freeware market), it’s quite possible that it will be included in this year’s best VST plugin round-up.

The plugin splits the incoming audio signal into three fixed frequency bands (low, mid, high, with variable crossover frequency). The three bands can be turned up or down using the gain knob, muted, and of course processed using the built-in soft-clipper circuit. It is also possible to engage the hard-clipping waveshaping curve, output filtering and global bypass. Finally, the plugin features a handy waveform display for visualizing the combined waveshaping effect of all three channels, as well as the additional M/S processing mode.

http://jovankoncar.com/j1000/