WhatsOpen
WhatsOpen is a system utility for macOS that displays which applications and services are currently running on your Mac. It provides visibility into active processes, helping users understand what programs are using system resources and what is happening on their machine. The app was originally developed by Franklin Marmon around 2008 and has been maintained through community efforts. It is useful for troubleshooting, system monitoring, and understanding which applications are open at any given time.
Suggested Replacements
1 suggestionWhatsOpen appears to be an older, legacy application that has not been actively maintained for native Apple Silicon. The most recent information suggests the original version was 32-bit only and stopped working on macOS 10.15 and later. While community maintainers have kept an archived version available, there is no confirmed native Apple Silicon build. For modern macOS and M-series Macs, consider using the Activity Monitor utility built into macOS itself (found in Applications > Utilities), which provides comprehensive process and system resource information natively. Alternatively, third-party tools like iStat Menus or Theine offer more detailed system monitoring with native Apple Silicon support and remain actively maintained.
Native version · Reported by in the community.
Sighting data is community-sourced — version availability and pricing should be verified with the developer.
Suggested Replacements
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