1.Console terminal: -All adb cmds -Ssh connection -Gedit (or vi) -Dmesg -Logcat, etc. (If ssh connection isn't working, please check network firewall) 2. Task Manager: -See detail of each app process status -Kill app / process 3. CPU manager: -Elapsed CPU frequency status -CPU performance level setting (Root permission is required.) -CPU clock customization (Root permission is required. Current clock will show only as high as max clock. But it may run higher. Please use it with caution) 4. Storage Manager: -NAND and SD card benchmark test -File Explorer -Low memory killer (Root permission is required.) 5. Battery manager: -Battery status -Low battery rule setting.