NagBar for Mac

Compact menu-bar monitoring for macOS

NagBar is a free macOS utility that lives in the menu bar and provides continuous visibility into external monitoring systems. It delivers live status updates and alerts so you can keep an eye on infrastructure health without opening a separate dashboard.

Supported monitoring backends

• Thruk
• Icinga/2
• Nagios

Main advantages

• Low CPU and memory usage, so it won’t slow your machine
• Instant access to alerts and state changes from the menu bar
• Consolidates multiple monitoring servers into a single quick-view
• Straightforward interface that makes it simple to scan service statuses

Typical scenarios where it helps

NagBar is handy for administrators who need a passive, always-on indicator of monitoring state — for example, when you want a compact overview while working on other tasks, or when you need to spot and respond to problems quickly without launching the full monitoring UI.

Cost and alternatives

NagBar is available at no charge. If you’re exploring other options, consider CheatSheet, another free tool that some users pair with menu-bar utilities for supplemental quick references and shortcuts.