Logiciel 64 bits moniteur réseau léger et open source pour Windows qui affiche les vitesses de téléchargement/montée directement dans la barre des tâches avec une interface native :

https://github.com/erez-c137/NetSpeedTray/releases/tag/v1.1.1

Existe en version setup et portable.

Se place discrètement dans la barre d'état système sans occuper de ressources
Dispose d'un « taux de mise à jour dynamique » qui réduit automatiquement la fréquence des mises à jour lorsque le réseau est inactif afin d'économiser le processeur et la batterie.
Se masque instantanément et lorsque on utilise une application plein écran.
Affiche un graphique en temps réel de l'activité récente directement sur le widget, avec une opacité réglable.
Exportation facile des données : données brutes vers des fichiers .csv pour une analyse dans une feuille de calcul ou graphiques sous forme d'images .png de haute qualité.
...

Version 1.1.4 du 23/08/2025
https://github.com/erez-c137/NetSpeedTray/releases/tag/v1.1.4

What's New
This release contains a single, critical fix for a bug discovered shortly after the release of v1.1.3.
🐛 Critical Bug Fix

Fixed "Start with Windows" Toggle and State Logic: Resolved a critical logic flaw where the "Start with Windows" setting could not be disabled from the settings menu. The toggle will now correctly save its state, and disabling the feature will correctly remove the application from the Windows startup list. This ensures the user has full control over the application's startup behavior.

Version 1.1.6 du 28/08/2025
https://github.com/erez-c137/NetSpeedTray/releases/tag/v1.1.6

✨ New & Reworked
Full Internationalization (i18n) Support: The application's code has been completely re-architected to support multiple languages and make community translations easy.
All user-facing text has been moved to modular language files (.json), allowing new languages to be added without changing the application's source code.
The language selection menu in the settings now displays language names in their native form (endonyms), such as "Deutsch" instead of "German". This is a global best practice that prevents users from getting "trapped" in a language they cannot read.

Overhauled Network Interface Monitoring: The ambiguous "Monitor All Interfaces" option has been replaced with a clear, explicit set of choices, giving users full control. The new modes are:
🔘 Auto (Primary Interface): The smart default for most users.
🔘 All Physical Interfaces: Aggregates speed from hardware like Wi-Fi and Ethernet while intelligently ignoring virtual adapters (VPNs, VMs).
🔘 All Interfaces (including virtual): A new power-user option to monitor traffic from every adapter, including VPNs and virtual machines.
🔘 Select Specific Interfaces: The existing manual selection mode.

✅ Preserved Stability Fixes from beta.4
This beta retains all the critical stability fixes from the previous version. The debounced refresh architecture is unchanged.

Definitive Fix for Disappearing/Flickering Widget: The robust solution for the widget flickering or disappearing when interacting with the desktop, taskbar, or RDP sessions is preserved.
RDP & Virtualization Stability: All fixes for Z-order issues and correct monitor association in RDP sessions remain in place.

✨ Continued Improvements
This beta retains all the successful improvements from the previous beta cycle:

Windows Server Startup Reliability: The fix for the Program Files (x86) startup path issue on 64-bit systems is still included.
Improved Decimal Formatting Clarity: The UI for setting decimal places has been redesigned to be more intuitive, with a single slider now controlling the number of decimal places (0, 1, or 2) for a more stable and consistent appearance.