Important Note: All plugins have just been updated to V15. More info here.


MFreeFXBundle contains a set of audio effects, which are completely free. Our commercial plugins offer many more features, but these are still extraordinary when compared to most plugins on the market. You can extend the features of these free plugins at any time by purchasing a licence.

Advantages of the upgrading

The software is totally free of charge, so please download and enjoy! You should consider upgrading to a professional version though, as this is what you would get:

  • You can change size and style of the plugins.
  • You can access the sonogram feature in the analyzers and equalizers.
  • You can manipulate (save, load, organise) your own presets.
  • You can access the modulators.
  • Most plugins can perform upsampling which minimizes aliasing, therefore it is useful to improve sound quality.
  • The plugins will not display the big red reminder box with our clickable logo at the bottom of every GUI.
  • You will make us happy and help us develop more free software ;-).



"The Melda MFeeFXBundle has some of their most useful plugins and has become a STAPLE in my productions ever since. I don’t think there’s a single recent project file on my computer that doesn’t make heavy use of this suite of devices. If you don’t download it right away you might as well just give  up because you’re gonna get left in the dust!"
Mr. Bill

Mr. Bill

"Melda FreeFXBundle solves about 100 problems a day for me!"

37 effects
included in MFreeFXBundle

A simple but powerful utility that adjusts the loudness to match the side-chain.


An advanced spectral analyzer and sonogram featuring normalization, super-resolution...

Analysis, Mastering

A classic automatic panner with adjustable shape oscillator technology.

A great sounding automatic pitch correction plugin with some cool creative features.

Mixing, Pitch

A powerful filter plugin with high-pass and low-pass filters and slopes up to 120dB/oct.


A serious tool for extreme distortion lovers that lets you do all sorts of bad things to bits!

Saturation & distortion

Produces up to 8 MIDI CC values from its own parameters.


A powerful utility which lets you mix and reroute the channels from both inputs.


MCharmVerb is a great sounding lush algorithmic reverb based on the MTurboReverb engine.

Mixing, Pitch

An extremely powerful multi-comb filter plugin with 2 super-powerful modulators.


A powerful compressor with custom processing shape and many other unique features.


An easy-to-use highly optimized convolution reverb.


An extremely easy-to-use, powerful 6-band equalizer with analyzer, sonogram and much more.


A versatile flanger with top-class sound, variable oscillator shape and many other features.

A powerful utility that lets you adjust the phase of individual frequencies however you like.

A powerful frequency shifter for everything from mild stereo expansion to complete destruction.

Saturation & distortion

An EBU R128 and ITU-R BS 1770-3 compliant loudness meter featuring everything you could need.

Analysis, Mastering

Free metronome featuring both sound and resizable visual feedback.


A powerful noise generator featuring white & pink noise and a few probabilistic generators.


A simple text editor, which you can use to store comments, lyrics or just any text.

An generator plugin with adjustable oscillator shape, completely free of aliasing.


Powerful oscilloscope equipped with a pitch detector; it saves time, because it just works.


An phaser effect plugin with adjustable oscillator shape, up to 100 filters, saturation...

A simple utility that lets you crossfade between the main input and sidechain.

A powerful crossfader between the main input and the sidechain featuring our multiband engine.

A simple utility for a simple job - record the plugin input into a WAV file, saved to disk.

Classic ring-modulation effects using two oscillators with customizable shapes.

Saturation & distortion

A smooth saturation in a definitive tube-like way improving the clarity of the resulting sound.

Saturation & distortion

A unique plugin which lets you apply a panorama to each frequency individually.

Mixing, Stereo

A basic M/S stereo field correction, fully mono compatible.


An advanced stereo field analyzer, which lets you solo mid, side and separate channels.

Analysis, Stereo

A definitive tremolo sound with an adjustable shape, handling up to eight channels of surround audio.

A simple audio pitch analyzer designed mostly for tuning guitars and other instruments.

Analysis, Pitch

Volume, panorama, phase inversion, stereo swapping, a DC blocker, delay, RMS and envelope...


A versatile vibrato with customizable shape, handling up to 8 channels of surround audio...

An analogue-inspired distortion module with a unique character ranging from mild harmonic enhancement to a complete sound destruction.

Saturation & distortion

A waveshaper that lets you construct your own shape and features lots of other goodiess.

Saturation & distortion

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