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Qtractor 0.9.30 - An End-of-Year'22 Release batch #3

Hello one third and last time this year,

Qtractor 0.9.30 (end-of-year'22) is released!


  • Plugin latency/delay compensation now in effect immediately after changing track option (cf. Track/Properties... /Plugins/Latency compensation).
  • Shade-off regions not-in-view from the thumb-views.
  • Improved MIDI queue time drift correction resilience and stability against in-flight tempo changes.
  • The main real-time process cycle now runs on uniform block-sizes, in strides of 64 frames per period, meaning a higher resolution automation, independent of buffer-size.
  • The internal main MIDI engine gets its ALSA sequencer queue to a higher resolution (PPQN aka ticks-per-beat) and not subordinated to the current session's anymore.
  • Although being deprecated to use, JACK Session support is hopefuly fixed, once again.
  • Better discriminate CLAP Plug-in specific note events and strict MIDI dialect event processing.


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Wiki (outdated; help wanted!):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 the fun && Happy New Year!

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Hello! Big thanks for a new release & Happy NY!!
When I click the link to the AppImage - I got the message:
The "/qtractor/0.9.30/qtr..73.1.x86_64.AppImage" file could not be found or is not available. Please select another file.

and can't download v.0.9.30....

rncbc's picture

probably something about timezones :) the official release time is 20:00 (8:00pm) UTC :)
maybe in a few minutes is a good time to try again?
sorry for the inconvenience

aa!! yes, I'm in too much of a hurry! )) Just successfully downloaded! Thanks again!

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