Best system monitors
Apps that show CPU, memory, disk, network and battery use, in the menu bar or a window.
6 apps, ordered by visits from AppBreakup and how often our research lists each one as an alternative. Open any app to see its alternatives.
All system monitors
- Alternatives to iStat Menus
A detailed Mac system monitor in the menu bar covering CPU, memory, disks, network, sensors, battery and weather.
PaidmacOS - Alternatives to Mission Center
Task Manager-style system monitor for Linux covering CPU, memory, disk, network and GPU.
Open sourceLinux - Alternatives to Resources
Modern GNOME app for watching CPU, GPU, memory, network, disk and battery use and managing processes.
Open sourceLinux - Alternatives to Stats
A free, open-source macOS system monitor for the menu bar showing CPU, GPU, memory, disk, network and sensors.
Open sourcemacOS - Alternatives to GNOME System Monitor
- Alternatives to Plasma System Monitor
KDE's customisable system monitor for sensors, processes and resource usage.
Open sourceLinux
Our picks by need
Best for most people
iStat MenusBest for a free option
Mission CenterBest for open source
ResourcesBest for Mac
StatsBest for Linux
GNOME System MonitorCommon questions
What are the best system monitors?
Based on how often our research lists them as alternatives and visits from AppBreakup, the leading system monitors right now are iStat Menus, Mission Center, Resources, Stats and GNOME System Monitor.
Are there free system monitors?
Yes. Mission Center (open source), Resources (open source), Stats (open source), GNOME System Monitor (open source) and Plasma System Monitor (open source) have a free option, out of 5 free or freemium apps we track.
Which system monitors are open source?
Mission Center, Resources, Stats, GNOME System Monitor and Plasma System Monitor.