Alternatives to Concept2 Utility

System monitor for the menu bar

Audio utility

App for managing battery charging. (Also installs a CLI on first use.)

Set of CPU, memory, disk, and network monitoring tools

Update maps and software, sync with Garmin Connect and register your device

Provides information about device hardware and software

Monitors the computer system and optimises its performance

Update and configure Elgato Capture devices

Operating system maintenance and cleaning utility

CPU management application

iPhone management application

Temperature monitoring, fan control and diagnostics