Release OpenMTR 1.3.0 · x-rated/OpenMTR

What's new in v1.3.0

Major cross-platform release: OpenMTR now runs natively on Windows, macOS (Apple Silicon) and Linux, not just Windows.

macOS support — native Apple Silicon (arm64) build packaged as a proper .app bundle with a generated .icns icon, distributed via .dmg. Includes a native macOS application menu (About / Quit, Edit, Window) and native light/dark appearance switching through Cocoa, with live updates for both the appearance and the accent colour via NSColor.controlAccentColor.
Linux support — x86_64/aarch64 build packaged as an AppImage (needs glibc 2.43 or newer at runtime). Self-registers a desktop entry and icon on first run so window managers such as GNOME Shell show the correct taskbar/dock icon instead of a generic one. Frameless custom window with a hand-painted drop shadow and a precise X11/XWayland click-through input shape via xcb-shape. System theme (light/dark, accent colour) is tracked live via org.freedesktop.portal.Settings over D-Bus, since Qt's own colorSchemeChanged signal is unreliable on several desktop environments (notably GNOME).
Cross-platform ICMP tracing engine — the network engine, previously built on Windows' IcmpSendEcho2, now has a POSIX implementation using raw/ping ICMP sockets (including Linux's unprivileged SOCK_DGRAM ping-socket path and its extended-error-queue handling), so IPv4/IPv6 tracing behaves the same on macOS and Linux as it does on Windows.

Simplified to a single app icon shared across all themes and platforms (previously separate light/dark .ico icons on Windows only).
Build system reworked into one CMakeLists.txt that builds all three targets: Windows static Qt .exe, macOS .app/.icns bundle, and a Linux AppImage with desktop-entry/icon install rules; -Wall -Wextra now enabled on non-MSVC compilers.

macOS builds are signed ad-hoc, not notarized (no paid Apple Developer account), so the first launch requires clearing the quarantine flag once — see the README for the one-line fix.

@BKPepe for creating and fine-tuning the macOS build, and for fine-tuning the engine for Linux and macOS, with the help of Claude.ai.
OpenMTR is built with Claude (Anthropic), directed and reviewed by the project maintainer.

If OpenMTR has been useful to you, consider supporting its development — thank you! 💙