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qpwgraph v0.6.0 - An Autumn'23 Release


qpwgraph v0.6.0 (autumn'23) is out!


  • Improved Patchbay / Exclusive mode scan enforcement.
  • Hopefully fixes the hideous random crashes caused by very short lived nodes, recycled by reusing the very same ids.
  • Cope with nodes that can possibly remain with the very same name but different ids.
  • Added deactivated (-d, --deactivated) and non-exclusive patchbay (-n, --nonexclusive) command line options.
  • Fixed unique/single instance support (Qt >= 6.6).

Qtractor 0.9.35 - An End-of-Summer'23 Release batch #3

Hi, thrice again,

Qtractor 0.9.35 (end-of-summer'23) is out!


  • MIDI Step-input is now finally featured on the MIDI clip editor (aka. piano-roll), provided Clip/Record is on and playback is not rolling; current snap-to-beat applies; starts/resets to play-head; Edit/Insert/Step to advance a single step/rest.
  • Notes keyed in the MIDI clip editor's virtual piano keyboard may now be recorded, especially while "overdubbing".
  • The official VST3 plug-in SDK is now included in the source tree as Git submodules.
  • Fixed a rounding error on current BBT information passed to plugins and to JACK transport/timebase.
  • When on Track/Auto Deactivate mode, plugins now show a dull, dimmed lit, green (fake-)LED when in auto-deactivated state.
  • Attempt to actually (de)activate plugins once on (de)instantiation.
  • Preppings to next development cycle (Qt >= 6.6)


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:

Wiki (severely outdated; help wanted!):


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

Keep having fun!

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Vee One Suite 0.9.32 - An End-of-Summer'23 Release batch #2

Hello, twice again,

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 released for the (northern) Spring'23 season...

All being delivered still 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.

The simplest change-log:

  • Preppings to next development cycle (Qt >= 6.6)

The QStuff* End-of-Summer'23 Release batch #1

Hello there!

Here the first batch of the QStuff*: QjackCtl, Qsynth, Qsampler, QXGEdit, QmidiCtl and QmidiNet, released for the (northern) End-of-Summer'23 season.

Enjoy while it's still hot.

qpwgraph v0.5.3 - An End-of-Summer'23 Release


qpwgraph v0.5.3 (end-of-summer'23) is released!


  • Added user contributed documentation: How To Use The Patchbay.
  • Fix condition for saving node name aliases.


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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