List of the Top 13 Free IP Scanners in 2025

JDisc Discovery serves as a robust solution for IT asset management and network discovery, offering organizations valuable, real-time visibility into their complete IT landscape. By conducting automated network scans, it efficiently detects and organizes a variety of devices, which ranges from physical servers and workstations to virtual machines and network appliances, thus providing users with a comprehensive asset inventory. The tool meticulously gathers crucial information, encompassing hardware specifications, installed software, system configurations, and the interrelationships among devices, ensuring thorough documentation of the IT environment. One of the standout features of JDisc Discovery is its agentless design. Instead of requiring software installation on each device, it utilizes multiple protocols such as SNMP, SSH, and WMI to collect data, facilitating rapid deployment and ensuring compatibility across an array of operating systems, including Windows, Linux, and Unix. This adaptability makes it particularly well-suited for varied and evolving IT infrastructures, allowing for effective and unobtrusive data acquisition. Additionally, its user-friendly interface enhances the overall management experience, empowering IT teams to make informed decisions based on accurate and up-to-date information.

Site24x7 offers an integrated cloud monitoring solution designed to enhance IT operations and DevOps for organizations of all sizes. This platform assesses the actual experiences of users interacting with websites and applications on both desktop and mobile platforms. DevOps teams benefit from capabilities that allow them to oversee and diagnose issues in applications and servers, along with monitoring their network infrastructure, which encompasses both private and public cloud environments. The comprehensive end-user experience monitoring is facilitated from over 100 locations worldwide, utilizing a range of wireless carriers to ensure thorough coverage and insight into performance. By leveraging such extensive monitoring features, organizations can significantly improve their operational efficiency and user satisfaction.

Paessler PRTG offers a comprehensive monitoring solution characterized by its easy-to-navigate interface, which is driven by an advanced monitoring engine. By streamlining connections and managing workloads efficiently, it helps to lower operational expenses and avert potential outages. Additionally, it enhances time management and ensures compliance with service level agreements (SLAs). The platform is equipped with an array of specialized monitoring capabilities, including customizable alerting, cluster failover mechanisms, distributed monitoring, as well as detailed maps and dashboards, all complemented by extensive reporting functionalities. With its robust features, PRTG empowers organizations to maintain optimal performance and address issues proactively.

OpUtils serves as a comprehensive tool for managing IP addresses and switch ports, allowing engineers to effectively oversee, diagnose, and resolve issues related to IT resources. This software enhances existing management systems by offering real-time monitoring and troubleshooting features. By streamlining the management of switches and IP addresses, it significantly benefits network engineers. The toolset includes more than 20 functionalities designed to track network performance, including bandwidth usage monitoring, ensuring the availability of essential devices, and facilitating the backup of Cisco configuration files. It also enables advanced IP scanning of both IPv4 and IPv6 subnets to pinpoint available and occupied IP addresses within the network. Furthermore, users can conduct scans across all switches, map ports, and access detailed information such as user profiles and physical locations. Additionally, it provides the capability to restrict access to unauthorized devices while detecting intrusions by rogue devices, ensuring the network's integrity is maintained. Overall, OpUtils empowers network professionals with the resources they need to maintain optimal network performance and security.

Many network scanning software solutions typically demand authenticated access to remote devices to ascertain the operating system in use. However, Slitheris Network Discovery employs TCP/IP stack fingerprinting along with various other technologies, allowing it to recognize numerous operating systems—including different versions of Windows, Linux, and iOS—without needing any form of credentials. Additionally, Slitheris can gather specific information about the operating system, such as Windows Uptime, Cold Boot Time, Time of Day, as well as Domain and Workgroup names. It effectively differentiates between Domain types and Workgroup types without requiring any authentication, which can significantly reduce the time and effort spent on locating usernames and passwords or physically accessing servers and PCs. This capability is particularly advantageous for IT Providers and Managed Service Providers, who will find this efficiency invaluable. Furthermore, the ability to perform scans without credentials enhances overall network security by minimizing unnecessary exposure to sensitive information.

The Nmap project seeks to overturn the common belief that open-source software is often inadequately documented by providing a wealth of resources detailing the installation and effective use of Nmap. This resource hub links to the official documentation from Insecure.Org, in addition to essential insights from various contributors. The book Nmap Network Scanning stands out as the ultimate guide for the Nmap Security Scanner, a free tool widely adopted for tasks including network discovery, management, and security evaluations. It addresses a diverse audience, ranging from newcomers grasping the basics of port scanning to experienced hackers delving into sophisticated packet crafting techniques. Featuring a detailed 42-page reference section that thoroughly explains each feature and option in Nmap, the book also demonstrates how to apply these tools to solve practical problems effectively. Additionally, it provides illustrative examples and diagrams showcasing the actual data transmitted across the network, which significantly aids readers in grasping real-world applications. This all-encompassing strategy guarantees that both beginners and seasoned professionals can extract valuable insights from the content offered. Ultimately, Nmap's commitment to quality documentation is a testament to its importance in the open-source community.

Network Scanner is an adaptable IP scanning application tailored to analyze both large corporate networks with numerous computers and smaller home networks that feature only a handful of devices. The tool allows users to scan individual IP addresses, specific machines, and entire IP address ranges, supporting an indefinite number of computers and subnets. It offers a thorough overview of all shared resources, capturing both visible and hidden NetBIOS (Samba) shares, in addition to FTP and web resources. Network administrators and casual users alike can utilize Network Scanner to inspect their networked computers or discover accessible network resources. In addition to identifying computers and shared resources, Network Scanner also checks access permissions, enabling users to connect them as network drives or access them using Explorer or web browsers. Moreover, users can conveniently export their scan results in multiple formats, such as XML, HTML, or plain text files, or opt to save them directly within the application for future use. This feature not only helps users maintain a well-organized record of their network resources and access rights but also enhances their ability to manage and analyze network configurations effectively. Overall, Network Scanner proves to be an essential tool for efficient network management and resource accessibility.

Utilize the Spiceworks IP Scanner to effortlessly recognize devices linked to your network, offering crucial information such as the operating system and MAC address. Beyond that, it allows for an in-depth examination of your servers and workstations, detailing aspects like CPU specifications, storage capacity, memory availability, installed software, and serial numbers, among other metrics. This tool simplifies the process of gathering necessary information with minimal setup required! Operating as a cloud-based solution, the IP Scanner thoroughly investigates your local network and compiles a sortable list of all identified devices. Users can filter, search, and even export the data into a CSV file for further analysis. While it automatically recognizes and scans a local subnet, it also grants users the option to define a custom IP range if preferred. Each device's data presentation is extensive, showcasing hostname, IP address, vendor details, operating system, MAC address, descriptions, open ports, and the device's online or offline status. The information returned varies based on the specific device being scanned, providing a customized overview of your network assets. This comprehensive functionality makes the IP Scanner an essential tool for network administrators aiming to efficiently oversee and manage their network environment, thus ensuring optimal performance and security. Additionally, its user-friendly interface facilitates quick navigation, enabling users to access vital information without extensive training.

Netlas.io serves as a search engine that functions as a network scanner for the Internet. It conducts extensive scans of DNS records for billions of domain names, along with analyzing hundreds of millions of HTTP responses and SSL certificates. Users can access this wealth of information through a variety of tools. The platform enables users to explore the findings from its Internet scans. Netlas employs non-intrusive scanning methods, continuously monitoring internet-accessible hosts while meticulously storing their responses. DNS Search compiles domain names alongside their corresponding IP addresses and other DNS records. The IP WHOIS feature provides insights into the ownership and management of an IP address, detailing the range of the address and the name of the network provider. For domains, the Domain WHOIS component reveals ownership information, which includes contact details, registrar specifics, and both registration and expiration dates. Additionally, the Certificates feature boasts a comprehensive database of SSL certificates sourced from multiple origins. Given its extensive capabilities, Netlas is an essential tool for cybersecurity professionals seeking to enhance their understanding of the internet landscape. Its various functionalities make it invaluable for conducting thorough investigations and assessments in the realm of cybersecurity.

Throughout the years, Advanced IP Scanner has built a reputation as a reliable and efficient tool for managing local area networks (LAN) and performing a variety of networking tasks. Each new version is subjected to rigorous testing by Famatech, in collaboration with beta testers from around the globe. The organization values all user feedback for improvements, aiming to provide the best possible solutions for its users. Additionally, Advanced IP Scanner works seamlessly with Radmin, another popular tool from Famatech that facilitates remote technical support, thereby significantly improving its capabilities and reducing the burden on system administrators. Major technology companies like IBM, Sony, Nokia, HP, Siemens, and Samsung are among the many that rely on Famatech's software, along with key players in telecommunications, governmental organizations, and financial institutions, highlighting its extensive acceptance across various industries. This widespread usage not only showcases the software's reliability but also its effectiveness in meeting the diverse needs of numerous sectors, illustrating its critical role in modern network management. Ultimately, Advanced IP Scanner continues to evolve, ensuring it remains a vital resource for those in the networking field.

Angry IP Scanner is a fast and effective utility specifically crafted for scanning IP addresses along with their corresponding ports. It is capable of functioning within any designated IP address range, is compatible with multiple operating systems, and has a lightweight design. This tool is portable, meaning it does not necessitate installation, allowing users to effortlessly copy it for use in various environments. The scanning begins with a ping to check the responsiveness of each IP address; afterwards, it can resolve hostnames, detect MAC addresses, and conduct port scans, among other capabilities. Users can further enrich the information gathered on each host by utilizing plugins. In addition, Angry IP Scanner provides functionalities such as retrieving NetBIOS information (which includes computer names, workgroup names, and the currently logged-in Windows user), saving favorite IP ranges, identifying web servers, and customizing openers. The outcomes from the scans can be exported in several formats, including CSV, TXT, XML, or as lists of IP-Port pairs. Furthermore, individuals with Java skills have the opportunity to develop plugins, enhancing the features of Angry IP Scanner even more, which solidifies its reputation as a versatile tool for network analysis. Its user-friendly nature and flexibility render it an ideal option for both beginners and seasoned professionals in the field. Additionally, the ability to customize the scanning process to meet specific needs only adds to its appeal as a comprehensive network management solution.

Free IP Scanner is a powerful application tailored for quick IP and port scanning, serving both network managers and casual users who require effective oversight of their networks. By leveraging sophisticated multi-thread scanning technology, this tool can rapidly scan hundreds of devices in a single second. It operates by pinging each IP address to verify its availability and can also resolve hostnames and perform port scans when necessary. Moreover, Free IP Scanner offers comprehensive NetBIOS details, which encompass the host name, workgroup, currently logged-in user, and MAC address. Users are able to export the collected data into a plain text file, facilitating straightforward access and analysis. The software is especially advantageous for network administrators, providing customizable scanning options such as priority settings and the maximum number of threads to deploy. Users can define a range of IP addresses by inputting the initial and final IPs, and the program adeptly manages situations where the concluding IP is numerically less than the starting one, showcasing its adaptability and intuitive design. With its array of features, Free IP Scanner stands out as a versatile resource for anyone looking to efficiently monitor and manage network assets, making it an essential tool in the realm of network administration.

This free network scanning utility effectively identifies active devices, revealing their NetBIOS user names, MAC addresses, and IP addresses. Bopup Scanner also has the functionality to discover and present HTTP (Web) servers that are currently running on remote machines via TCP ports 80 and 8080, facilitating quick recognition of online computers, access to their shared resources, and the capability to export findings into a text file. For more advanced users, the tool provides options to define a specific IP range for scanning, customize timeout settings for resolving remote hosts, and can be executed from a command line interface. Notably, Bopup Scanner is entirely portable, eliminating the need for installation on the target system, which allows for easy transportation on a USB flash drive to different computers. Additionally, the program can be run with precise command line parameters to establish pre-set options, including the scanning IP range (from starting to ending IP addresses) and a specified output file path, enhancing its utility for automated monitoring through batch scripts. Consequently, users can incorporate it effortlessly into their network management practices, making it an indispensable tool for efficient operations. Its versatility and portability significantly enhance its appeal for both casual and professional users alike.