x42-plugins is a collection of audio plugins developed by Robin Gareus
(aka x42), including:

* balance.lv2 - Stereo balance control with optional per channel delay.
* controlfilter.lv2 - Filter/process Control Parameters
* darc.lv2 - Audio signal compressor
* dpl.lv2 - Digital peak limiter suited for mixing and mastering
* fat1.lv2 - Pitch correction based on Fons Adriaensen's zita-at1
* fil4.lv2 - Second order resonant filters
* matrixmixer.lv2 - Matrix mixer
* meters.lv2 - Audio-level meters
* mididebug.lv2 - Generate arbitrary MIDI messages up to 3B in length
* midifilter.lv2 - Collection of 29 MIDI filters
* midigen.lv2 - Test-sequence generator
* midimap.lv2 - MIDI event mapping based on a config file
* mixtri.lv2 - Matrix mixer and trigger processor
* nodelay.lv2 - Audio delay
* onsettrigger.lv2 - Audio to midi converter intended for Kick drums
* phaserotate.lv2 is - Audio phase rotation plugin.
* sisco.lv2 - Simple audio oscilloscope with variable time scale
* spectra.lv2 - Lollipop graph spectrum analyzer
* stepseq.lv2 - Simple step sequencer
* stereoroute.lv2 - Stereo control
* testsignal.lv2 - Test signal/wave generator
* tuna.lv2 - Musical instrument tuner with strobe characteristics
* xfade.lv2 - Stereo cross-fading 2 x 2 input to 2 output channels
* zeroconvo.lv2 - LV2 plugin to convolve audio signals.