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@SalehGNUTUX SalehGNUTUX released this 15 May 19:40
· 8 commits to main since this release
GT-STACER_26.06_STABLE
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GT-STACER 26.06 stable

Release date: 2026-05-15
Channel: stable
License: GNU GPL v3 or later

GT-STACER 26.06 is the first stable release of the modernised Stacer fork
— a Qt 6 / C++ 17 Linux system optimiser and monitor by GNUTUX. Every issue
surfaced during the 26.05 beta field-test is fixed here, plus three large
additions: Flatpak/Snap drill-down in the cleaner, multi-package uninstall,
and a configurable notifications panel.

Highlights

  • 🔍 Multi-field process search — name + PID + cmdline + user. AppImage
    and wrapper processes that the 26.05 beta hid (because the kernel comm
    is truncated to 15 chars) now show up correctly.
  • 🛑 Six process actions (Terminate · Force kill · Suspend · Resume ·
    Lower priority · Raise priority) via a right-click context menu, with a
    red escalated-confirmation dialog for critical system processes
    (systemd*, dbus*, Xorg/Xwayland, gnome-shell/plasmashell,
    pipewire*, NetworkManager, kernel threads, PID 1).
  • 🧹 Flatpak / Snap drill-down in System Cleaner — pick exactly which
    applications you want to remove, with size + version + ID + search/sort.
  • 📦 Dynamic package-cache card — labelled "APT Cache" on Debian,
    "DNF Cache" on Fedora, "Pacman Cache" on Arch, "Zypper Cache" on openSUSE…
    follows the host's actual package manager.
  • 🗑️ Multi-package uninstall — Ctrl/Shift-click selects several rows;
    the button re-labels itself and the worker thread reports progress
    ("Removing X (3 of 5)…") between packages.
  • 🔔 Configurable notifications — full Settings UI for the alert
    thresholds (CPU/GPU °C, RAM %, Disk %, Battery %); any individual
    threshold can be 0 to disable.
  • ⚡ Timer pause on hide — every page's QTimer stops when the window
    is minimised to the tray, restored on showEvent(). CPU usage drops to
    near zero while the tray icon stays live.
  • 🌍 19 languages compiled at 100 % — every entry is finished; the
    per-language native-translation rate ranges from 11 % (Kannada, Malayalam)
    to 100 % (Arabic, English), with English fallback used for the rest so
    the UI never shows a blank string.

Downloads

Asset Size SHA-256
GT-STACER-26.06-x86_64.AppImage 54 MB 7a47118a3319208ed0600d053bc63056f215e6e463f5e0bb0bfbfc9a07e30ac4
GT-STACER_26.06_amd64.deb 1.8 MB 89e885d9bfbf1ff7d05856b6a39fb02c34e22c0e36b7693b768d1219be75553b
gt-stacer-26.06-2.x86_64.rpm 8.2 MB 5304e80737c8f9e2587adfab67a5e691779d6b2708fd6088d44192cb21d880b2
GT-STACER-26.06-x86_64.flatpak 2.0 MB 7322326e4bd3f1022e6c5a8ab99be991880b95f6c7bfdb5a60210a00650341bc
SHA256SUMS.txt 380 B (verifies the four above)

Verify before installing:

sha256sum -c SHA256SUMS.txt

Install

Debian / Ubuntu / Mint / Pop!_OS / Kali / Trixie+

sudo dpkg -i GT-STACER_26.06_amd64.deb
sudo apt-get install -f          # fix any missing deps

Fedora / RHEL / AlmaLinux / Rocky / openSUSE (via alien-built RPM)

sudo dnf install ./gt-stacer-26.06-2.x86_64.rpm
# or
sudo rpm -i ./gt-stacer-26.06-2.x86_64.rpm

Anywhere (AppImage — no install needed)

chmod +x GT-STACER-26.06-x86_64.AppImage
./GT-STACER-26.06-x86_64.AppImage

The AppImage bundles both XCB and Wayland Qt platform plugins, so it works
on every modern desktop environment (GNOME, KDE Plasma, XFCE, Cinnamon,
MATE, LXQt, Hyprland, Sway, …).

Flatpak (sandboxed)

flatpak install --user GT-STACER-26.06-x86_64.flatpak
flatpak run org.gnutux.gt-stacer

The Flatpak builds against org.kde.Platform//6.9 and uses
flatpak-spawn --host for every privileged operation (cleaner, service
manager, uninstaller, /etc/hosts editor, sysctl). pkexec runs on the
host, not inside the sandbox, so the polkit prompt is unchanged. The
sandbox is detected at runtime via $FLATPAK_ID and /.flatpak-info,
and ~/.cache/gt-stacer-tmp/ is used in place of /tmp for the
write-via-temp-file path so the host can see the staged content.

Dependencies

GT-STACER no longer depends on QtCharts (replaced with a custom widget),
which cuts the install size and unblocks distros that don't ship qt6-charts.

Distro family Runtime deps
Debian / Ubuntu libqt6core6t64 (or libqt6core6), libqt6gui6t64, libqt6widgets6t64, libqt6svg6 · recommended: polkitd, flatpak
Fedora / RHEL qt6-qtbase, qt6-qtsvg · recommended: polkit, flatpak
Arch qt6-base, qt6-svg · recommended: polkit, flatpak

Known limitations

  • RPM is currently built via alien from the DEB on Debian. A native
    rpmbuild path is in the spec file but requires Fedora/openSUSE deps;
    community pull-requests welcome.
  • Battery monitoring shows 0 on systems without /sys/class/power_supply.
  • Snap cache cleaning requires snapd to be installed (no-op otherwise).
  • Translations other than Arabic / English / French are partial — the UI
    falls back to English for missing strings rather than showing blanks.

Reporting issues

Credits

Released under the GNU GPL v3 or later. No warranty.

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