ScreenGuard

Open-source screen time tracker, app blocker and digital wellbeing app for Linux — GNOME Wayland & X11, local-first.

Wayland & X11 Daily app limits Focus mode Local-only data GPL-3.0

Screen time tracking — live and historical per-app usage, with week-by-week history
Daily app limits — set a budget per app; when it runs out, the app is locked for the day
Focus mode — Pomodoro-style sessions where the apps you choose are blocked
Native GNOME Wayland — via the bundled ScreenGuard Shell extension
All X11 desktops — GNOME, KDE, XFCE, MATE, Cinnamon, LXQt, i3 and more
Private by default — no account, no cloud sync, no telemetry; data stays on your machine

Install: APT repository, .deb / .rpm, standalone tarball, AUR, openSUSE OBS, Nix — v1.1.2, full instructions in the README.