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Qtractor 0.8.5 - The Autumn'17 Release


While this Fall still lasts... and before the New Year/Sun cycle comes in and sure will goes out...

And then there is the time when a couple of things that most may find well, badly interesting: one it's primarily and visually evident and adds up as an UI/UX thingy, while the other may land way more beyond the scenes, not so obviously perhaps, but having an impact on the short and not so short but long run. You tell me.

Truth is:

Qtractor 0.8.5 (autumn'17) is now released!

The short list is, or better yet, there are these:

  • File-system browser/tree-view (NEW)
  • Out-of-process/cache plugin scan (ALL plugin types, not just Linux-VST)

And the not so short list but quite the same information (aka. change-log):

  • Audio clip gain and panning properties are now taken into consideration when hash-linking (aka. ref-counting) their back-end buffers.
  • New out-of-process plug-in inventory scan and cache option, replacing the old (aka. dummy) VST plug-in scan option and extending its function to all other plug-in types: LADSPA, DSSI and also LV2 (cache only).
  • A File System browser and tree-view is finally integrated as a dockable-widget on the main application window (cf. main menu View / Window / File System).
  • Drag-and-dropping of session, audio and MIDI files over the main track-list (left pane) is now possible, allowing for yet another quick means to open a new session or add new tracks to the current session.
  • MIDI input/capture time-stamping has been fixed as much to avoid missing inbound events, when play-head is near the loop-end point and the loop-start is set below the absolute first half-a-second (<0.5sec).
  • LV2 Time/Transport speed information is now set on rolling when in audio export aka freewheeling mode.
  • Added *.SF3 to soundfont instrument files filter, on View > Instruments... > Import... file dialog.
  • A brand new View/Options.../Display/Meters/Show meters on track list/left pane option has been added.


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 (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.

Enjoy && Keep the fun.

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rncbc's picture

there's one single picture worth a thousand words though
maybe special when those words lie deep at the bottom of a dang change-log
have your own peek ;)


Thanks Rui.
Packaged and available for the LibraZiK-2 users.

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