# MacPeek

> MacPeek is an open-source collection of lightweight native macOS utilities for finding, inspecting and understanding the things macOS makes unnecessarily difficult to see.

MacPeek is free and open source (MIT). No account, no telemetry. It runs as your macOS user (macOS 13 or later, Apple silicon and Intel) and never asks for administrator rights. 14 utilities are built into the app today; the first signed release is published. Source: https://github.com/mohitkap12-a11y/MACPeek

## Utilities
- [PortPeek](https://www.macpeekapp.com/utilities/portpeek/): What is using port 3000? See what's using your ports. Kill it in one click.
- [DisplayPeek](https://www.macpeekapp.com/utilities/displaypeek/): What display configuration am I actually running? Know exactly how your displays are configured.
- [USBPeek](https://www.macpeekapp.com/utilities/usbpeek/): What is connected, and at what speed? See what's connected to your Mac.
- [NetPeek](https://www.macpeekapp.com/utilities/netpeek/): Is my network connection actually healthy? Understand your network connection.
- [BatteryPeek](https://www.macpeekapp.com/utilities/batterypeek/): What is my MacBook battery actually doing? Understand your MacBook battery. (coming soon, not released)
- [SleepPeek](https://www.macpeekapp.com/utilities/sleeppeek/): Why isn't my Mac sleeping? Find out why your Mac isn't sleeping.
- [MemoryPeek](https://www.macpeekapp.com/utilities/memorypeek/): Is my Mac actually running out of memory? See whether your Mac is short of memory.
- [CPUPeek](https://www.macpeekapp.com/utilities/cpupeek/): What is making my Mac slow or hot right now? See how busy your CPU is, and what’s keeping it busy.
- [FileLockPeek](https://www.macpeekapp.com/utilities/filelockpeek/): What process is using this file? Find what's holding a file open.
- [ProcessPeek](https://www.macpeekapp.com/utilities/processpeek/): What exactly is this process? Inspect a process and its relationships.
- [DiskPeek](https://www.macpeekapp.com/utilities/diskpeek/): Which app is using my disk right now? See which processes are hitting your disk, and how full each drive is.
- [EnvPeek](https://www.macpeekapp.com/utilities/envpeek/): What environment variables does this environment see? Inspect and search environment variables.
- [DNSPeek](https://www.macpeekapp.com/utilities/dnspeek/): Which DNS servers is my Mac using, and do they respond? Inspect DNS configuration and resolver behavior.
- [SoundPeek](https://www.macpeekapp.com/utilities/soundpeek/): Why is my audio going to the wrong place? See your audio devices and control the default output.
- [UpdatePeek](https://www.macpeekapp.com/utilities/updatepeek/): What updates are available? See macOS, Homebrew and npm updates.

## Documentation
- [Installation](https://www.macpeekapp.com/docs/installation/): Install MacPeek and open it from the menu bar.
- [Using MacPeek](https://www.macpeekapp.com/docs/usage/): The launcher, search, refresh and settings.
- [Managing utilities](https://www.macpeekapp.com/docs/managing-utilities/): Choose which utilities appear and in what order.
- [Overview](https://www.macpeekapp.com/docs/utilities/): Every utility at a glance and the rules they all follow.
- [PortPeek](https://www.macpeekapp.com/docs/ports/): Which ports are listening, and why some sockets are missing.
- [FileLockPeek](https://www.macpeekapp.com/docs/utilities/filelockpeek/): Find the process holding a file or folder open.
- [ProcessPeek](https://www.macpeekapp.com/docs/utilities/processpeek/): Inspect any process, then end it safely.
- [MemoryPeek](https://www.macpeekapp.com/docs/utilities/memorypeek/): Memory pressure, where RAM goes and the apps using the most.
- [CPUPeek](https://www.macpeekapp.com/docs/utilities/cpupeek/): CPU use per core, thermal state and the busiest apps.
- [DiskPeek](https://www.macpeekapp.com/docs/utilities/diskpeek/): How full each drive is, and who is reading and writing.
- [EnvPeek](https://www.macpeekapp.com/docs/utilities/envpeek/): Inspect environment variables and PATH, with secrets hidden.
- [NetPeek](https://www.macpeekapp.com/docs/utilities/netpeek/): Connection, Wi-Fi signal and on-demand ping checks.
- [DNSPeek](https://www.macpeekapp.com/docs/utilities/dnspeek/): DNS servers in use, and whether each one answers.
- [DisplayPeek](https://www.macpeekapp.com/docs/utilities/displaypeek/): Real resolution, refresh rate and scaling per display.
- [USBPeek](https://www.macpeekapp.com/docs/utilities/usbpeek/): USB and Thunderbolt devices and their negotiated speed.
- [SleepPeek](https://www.macpeekapp.com/docs/utilities/sleeppeek/): What keeps your Mac awake, and its sleep history.
- [SoundPeek](https://www.macpeekapp.com/docs/utilities/soundpeek/): Audio devices, the current defaults, volume and mute.
- [UpdatePeek](https://www.macpeekapp.com/docs/utilities/updatepeek/): macOS updates, plus outdated Homebrew and npm packages.
- [Killing safely](https://www.macpeekapp.com/docs/killing-processes/): Graceful first, identity re-checks, explicit force kill.
- [Permissions](https://www.macpeekapp.com/docs/permissions/): What each utility can read and do, and what it never asks for.
- [Troubleshooting](https://www.macpeekapp.com/docs/troubleshooting/): Fixes for the problems people hit most.
- [Privacy](https://www.macpeekapp.com/privacy/): Exactly what MacPeek reads, and the few checks that use the network.
- [Security](https://www.macpeekapp.com/security/): How MacPeek is built and how to report an issue.

## Guides
- [Find what is using a port on Mac](https://www.macpeekapp.com/blog/how-to-find-what-is-using-a-port-on-mac/)
- [Kill a process on a port on Mac](https://www.macpeekapp.com/blog/how-to-kill-a-process-on-a-port-on-mac/)
- [Free port 3000 on Mac](https://www.macpeekapp.com/blog/how-to-free-port-3000-on-mac/)
- [lsof on Mac: find process by port](https://www.macpeekapp.com/blog/lsof-mac-find-process-by-port/)
- [Mac port manager](https://www.macpeekapp.com/blog/mac-port-manager/)
- [Mac port monitor](https://www.macpeekapp.com/blog/mac-port-monitor/)
- [Find what process is using a file on Mac](https://www.macpeekapp.com/blog/how-to-find-what-process-is-using-a-file-on-mac/)
- [Check monitor refresh rate on Mac](https://www.macpeekapp.com/blog/how-to-check-monitor-refresh-rate-on-mac/)
- [See USB devices on Mac](https://www.macpeekapp.com/blog/how-to-see-usb-devices-on-mac/)
- [Why won't my Mac go to sleep?](https://www.macpeekapp.com/blog/why-wont-my-mac-go-to-sleep/)
- [Check MacBook battery health](https://www.macpeekapp.com/blog/how-to-check-macbook-battery-health/)
- [Check Wi-Fi signal strength on Mac](https://www.macpeekapp.com/blog/how-to-check-wifi-signal-strength-on-mac/)
- [Find and kill a process on Mac](https://www.macpeekapp.com/blog/how-to-find-and-kill-a-process-on-mac/)
- [See which app is using your disk](https://www.macpeekapp.com/blog/how-to-see-what-is-using-your-disk-on-mac/)
- [See environment variables on Mac](https://www.macpeekapp.com/blog/how-to-see-environment-variables-on-mac/)
- [Check your DNS servers on Mac](https://www.macpeekapp.com/blog/how-to-check-dns-servers-on-mac/)

## MacPeek Remote (coming soon)
- [MacPeek Remote](https://remote.macpeekapp.com/): a paid native macOS console for the Macs that run MacPeek: live CPU, memory, disk and network every second, 30 days of history, alerts, and remote Peeks (free a port, quit a process), on the local network and later from anywhere, end-to-end encrypted. Not released yet; the agent it talks to is built into MacPeek, switched off by default.
- [MacPeek Remote pricing](https://remote.macpeekapp.com/pricing/): MacPeek stays free; MacPeek Remote is one subscription (monthly or yearly, 5 Macs included) for the local network and access from anywhere, with a 14-day free trial and no card needed. Prices are announced at launch.

## Optional
- [Full text of every utility page](https://www.macpeekapp.com/llms-full.txt)
- [Privacy](https://www.macpeekapp.com/privacy/)
- [Security](https://www.macpeekapp.com/security/)
- [Support](https://www.macpeekapp.com/support/)
- [Download](https://www.macpeekapp.com/download/)