Windows Diagnostics, Hardware & Network Tools: 24 Free Apps (2026)

Angry IP Scanner is an open-source and cross-platform network scanner. It is used to scan IP addresses and ports, providing information about network connectivity.

Display Driver Uninstaller (DDU) is a tool for completely uninstalling graphics drivers from NVIDIA, AMD, and Intel. It is useful for troubleshooting graphics driver-related issues.

gsudo is a sudo equivalent for Windows. It allows you to run commands with elevated administrative privileges directly within the current console window.

ImHex is a free and open-source hex editor for reverse engineers and programmers, featuring a custom pattern language for decoding binary formats, a disassembler, and data analysis tools.

This is the VPN client software for the Mullvad VPN service.

Nmap (Network Mapper) is an open-source tool for network exploration and security auditing. It discovers devices on a network and provides information about their ports and services.

PuTTY is a free and open-source terminal emulator, serial console, and network file transfer application. It supports various network protocols such as SSH, Telnet, and SCP.

Rufus is a utility that helps format and produce and build bootable USB drives, such as USB keys or pen drives.

Simplewall is a free and open-source firewall application for Windows. It allows users to control and manage the inbound and outbound network traffic of applications.

A free, powerful, multi-purpose tool that helps you monitor system resources, debug software and detect malware.

Ventoy is an open-source tool for producing and developing bootable USB drives. It supports multiple ISO files on a single USB drive, making it a versatile solution for installing operating systems.

WinSCP is a popular open-source SFTP, FTP, and SCP client for Windows. It allows secure file transfers between a local and a remote computer.

WireGuard is a fast and modern VPN (Virtual Private Network) protocol. It aims to be simpler and more efficient than other VPN protocols, providing secure and reliable connections.

Wireshark is a widely-used open-source network protocol analyzer. It allows users to capture and analyze network traffic in real-time, providing detailed insights into network activities.

Advanced IP Scanner is a fast and easy-to-use network scanner. It is designed to analyze LAN networks and provides information about connected devices.

Cinebench R23 is a benchmark tool for comparing CPU rendering performance across systems.

CPU-Z is a system monitoring and diagnostic tool for Windows. It provides detailed information about the computer's hardware components, including the CPU, memory, and motherboard.

GPU-Z provides detailed information about your graphics card and GPU.

HWiNFO provides comprehensive hardware information and diagnostics for Windows.

HWMonitor is a hardware monitoring program that reads PC systems main health sensors.

MSI Afterburner is a graphics card overclocking utility with advanced features.

OpenVPN Connect is a VPN client that allows you to connect securely to a VPN server. It provides a secure and encrypted connection for protecting your online privacy.

Proton VPN is a no-logs VPN service that protects your privacy online with features like Secure Core and Tor over VPN.

The Tailscale client allows you to connect all your devices using WireGuard®, without the hassle. Tailscale makes it as easy as installing an app and signing in.