Show-off my open-source stuff, mostly of the Linux Audio/MIDI genre

qpwgraph v0.6.2 - A Winter'24 Release


qpwgraph v0.6.2 (winter'24) is out!


  • Make the main canvas background to mid-gray, when on non-dark color themes.
  • Updated copyright headers into the New Year (2024).


qpwgraph is a graph manager dedicated to PipeWire, using the Qt C++ framework, based and pretty much like the same of QjackCtl.

Project page:


Git repos: (official)


qpwgraph is free, open-source software, distributed under the terms of the GNU General Public License (GPL) version 2 or later.


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rtirq update - 2024 edition

Hi everybody!

A new update to rtirq is out:

  • Small typo fixed (by pallaswept)
  • Small robustness increase (by capocasa)
  • Version 20240120.

Packages are here available and also from the repos:

Qtractor 0.9.38 - An End-of-Year'23 Release

Season's greetings to y'all!

Qtractor 0.9.38 (end-of-year'23) released!


  • Track Properties (dialog): auto-background color option added.
  • Mitigate undifferentiated disablement of up/down arrow buttons, on tempo and time-signature entry spin-boxes.
  • MIDI clip editors (aka. piano-roll) are now raised and centered to current mouse pointer position in main timeline (tracks-view).
  • Remember last Marker color setting in Tempo Map/Markers dialog.
  • A colored ribbon is now featured on tracks-list Bus column and mixer-strip headers; ribbon colors are designated for Audio and MIDI tracks or buses, given by the respective '10dB' and 'Over' meter colors.
  • Buses'In'/'Out' suffixes are back on mixer-strip header tooltips.


Qtractor is an audio/MIDI multi-track sequencer application written in C++ with the Qt framework. Target platform is Linux, where the Jack Audio Connection Kit (JACK) for audio and the Advanced Linux Sound Architecture (ALSA) for MIDI are the main infrastructures to evolve as a fairly-featured Linux desktop audio workstation GUI, specially dedicated to the personal home-studio.


Project page:


Git repos:



Qtractor is free, open-source Linux Audio software, distributed under the terms of the GNU General Public License (GPL) version 2 or later.

Wholly cheers && Keep having fun!

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Vee One Suite 0.9.33 - An End-of-Autumn'23 Release

Season's greetings everyone,

Early for the winter holydays, the Vee One Suite of old-school software instruments,

  • synthv1 as a polyphonic subtractive synthesizer;
  • samplv1 a polyphonic sampler synthesizer;
  • drumkv1 as yet another drum-kit sampler;
  • padthv1 a polyphonic additive synthesizer.

Are here again released, this time for the (northern) End-of-Autumn'23 season.

Still delivered in dual form:

  • a pure stand-alone JACK client with JACK-session, NSM (Non/New Session Management) and both JACK MIDI and ALSA MIDI input support;
  • a LV2 instrument plug-in.


  • Mitigate LV2 State path mapping features duplication. (applies to samplv1 and drumkv1 only)
  • Minor optimization to denormal avoidance on some fx's.
  • Bumping into next development cycle (Qt >= 6.6)

Qtractor 0.9.37 - An End-of-Autumn'23 Release

Hi all,

Qtractor 0.9.37 (end-of-autumn'23) is out!


  • Fixed an ancient hack on session initialization to wait to JACK service start up, which hang up while on pipewire-jack >= 1.0.0.
  • Add default audio metronome sample files.
  • Fixed automation curve rescaling across multiple, more than just one or two, tempo-map node changes.
  • New MIDI Tool Resize / Legato duration option added.
  • MIDI Clip Editor (aka. piano-roll) thumb-view now taking tempo-map changes into account.
  • Audio metronome is enabled only when both the bar and beat sample files are provided.


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