HyperMonitor vs Activity Monitor

Activity Monitor is Apple’s built-in system monitor, and it’s free on every Mac. Its CPU, Memory, Energy, Disk and Network tabs show how much of each resource every process uses, with live graphs at the bottom of the window. The Memory tab’s memory pressure graph is the quickest way to see whether your Mac needs more RAM, and the Energy tab shows which apps drain the battery. You can sort by any column, quit or force quit a process, and sample a process to see what it is doing. Double-clicking a process opens a window with its parent process, statistics and an Open Files and Ports tab. If your fans are loud, your Mac feels slow or your battery runs down too quickly, Activity Monitor is the right tool to open first. It needs no install, and it comes from the same company that makes the operating system.

Activity Monitor measures resources. It doesn’t judge them. There is no single view of every port your Mac is listening on: you can see a process’s ports only by opening that process and reading the raw addresses in its Open Files and Ports tab, so finding what owns port 8000 means guessing which process to check. It doesn’t list launch agents and daemons, the plists that start them or when they were written, so it can’t tell you what starts itself at login. It doesn’t flag anything either: an unsigned program listening on every network interface looks the same as Safari. And it doesn’t explain what a process is, so names like mDNSResponder or rapportd are left for you to search. None of this is a flaw. Activity Monitor was designed to answer “what is using my CPU, memory and battery?”, not “what on this Mac should I look at more closely?”

HyperMonitor starts from the questions Activity Monitor leaves open. Its process list shows CPU, memory, ports and user for each process, read with libproc and ps. The Ports view maps every socket you can see to the app that owns it and labels each listener Local or Network; relaunch with root access to include other users’ sockets. The Launch view lists launchd agents and daemons from all five folders with their plist, program and process, flags jobs written in the last 14 days, and lets you load, unload or remove them. Triage rules flag things like unsigned listeners and binaries changed while running, ranked critical, medium or low, each with why it matters. Common macOS processes come with a built-in description, and Ask answers plain-English questions on your Mac with Apple Intelligence, or with the Claude or Codex CLI after you agree. A menu bar item shows CPU or a count of critical findings.

No, and you don’t need to choose. Keep Activity Monitor for energy use, memory pressure and disk activity, which HyperMonitor doesn’t try to cover in the same depth. Use HyperMonitor when the question is about exposure and persistence: which app is listening on a port, whether that port is reachable from your network, what a launch agent runs and when it appeared, or whether an unfamiliar process is signed. The two apps read the same information from macOS, so running both is fine. Activity Monitor is free and always there. HyperMonitor is a one-time purchase of £29 for up to two of your own Macs, after a free 14-day trial with every feature and no signup. It runs on macOS 14 Sonoma or later, on Apple silicon and Intel. HyperMonitor’s findings are heuristics, not antivirus, so treat them as a guide to what deserves a closer look.