Best Free IP Scanners of 2025

JDisc Discovery is a powerful IT asset management and network discovery tool, designed to provide organizations with clear, real-time insights into their entire IT environment. By automatically scanning the network, it identifies and catalogs devices, from physical servers and workstations to virtual machines and network appliances, giving users a detailed inventory of their assets. The tool captures essential data such as hardware specifications, installed software, system configurations, and interdependencies among devices. A key advantage of JDisc Discovery is its agentless architecture. Rather than requiring installation on each device, it uses multiple protocols (like SNMP, SSH, WMI) to gather information, ensuring quick deployment and compatibility across various operating systems, including Windows, Linux, and Unix. This makes it ideal for diverse and dynamic IT ecosystems, enabling efficient and non-intrusive data collection.

Site24x7 provides unified cloud monitoring to support IT operations and DevOps within small and large organizations. The solution monitors real users' experiences on websites and apps from both desktop and mobile devices. DevOps teams can monitor and troubleshoot applications and servers, as well as network infrastructure, including private clouds and public clouds, with in-depth monitoring capabilities. Monitoring the end-user experience is done from more 100 locations around the globe and via various wireless carriers.

Paessler PRTG is an all-inclusive monitoring solution with an intuitive, user-friendly interface powered by a cutting-edge monitoring engine. It optimizes connections and workloads, reduces operational costs, and prevents outages. It also saves time and controls service level agreements (SLAs). This solution includes specialized monitoring features such as flexible alerting, cluster failover, distributed monitoring, maps, dashboards, and in-depth reporting.

OpUtils is an IP address and switch port management tool that engineers can use to efficiently monitor, diagnose and troubleshoot IT resources. OpUtils is a complement to existing management tools, providing real-time monitoring and troubleshooting capabilities. It makes it easy for network engineers to manage their switches and IP addresses. This switch port management tool includes over 20 tools that can be used to monitor network performance, such as monitoring bandwidth usage, monitoring the availability of critical devices, and backing up Cisco configuration files. Advanced IP scanning of IPv4 or IPv6 subnets within your network is possible to identify available and used IP addresses. You can scan all switches in your network, map ports, run port scans, and view details such user, physical location, and more. Block access to rogue devices and identify rogue device intrusions.

Most network scanning software packages require credentialed access to remote devices in order to detect operating system. Slitheris Network Discovery uses TCP/IP stack fingerprinting, other technologies, and can identify many operating systems without authentication or credentials, including Windows (and its Edition), Linux and iOS. Slitheris can also scan for details about the operating system, such as Windows Uptime and Cold Boot Time, Time of Day, and Domain/Workgroup names. It distinguishes between Domain types and Workgroup types without requiring authentication or credentialed accessibility. This saves time and frustration when trying to find usernames and passwords, or visiting servers and PCs in person. This unique feature will be especially appreciated by IT Providers and Managed Service Providers.

The Nmap initiative aims to challenge the perception that open-source software often lacks thorough documentation by offering an extensive array of guidance on how to install and utilize Nmap effectively. This webpage serves as a gateway to the official documentation from Insecure.Org, alongside valuable contributions from various sources. The book titled Nmap Network Scanning acts as the definitive resource for the Nmap Security Scanner, which is a free and open-source tool embraced by millions for purposes such as network discovery, management, and security assessments. It caters to a wide audience, from beginners learning the fundamentals of port scanning to seasoned hackers exploring advanced packet crafting techniques. With a 42-page reference section that meticulously outlines every feature and option available in Nmap, the remainder of the book illustrates how to leverage these tools to efficiently tackle practical challenges. Furthermore, it includes examples and diagrams that depict the actual data sent over the network, enhancing the reader's understanding of real-world applications. This comprehensive approach ensures that both novice users and expert professionals can find value in the material provided.

Advanced IP Scanner has established itself over the years as an essential and dependable tool for managing local area networks (LAN) and executing a variety of networking functions. Each iteration undergoes extensive testing by Famatech and a network of beta testers worldwide. The company values feedback on product enhancements to ensure they deliver the most effective solutions for their users. Additionally, Advanced IP Scanner works seamlessly with Radmin, another well-regarded product from Famatech designed for remote technical assistance, which enhances the functionality of Advanced IP Scanner and eases the workload for system administrators. Famatech's software is trusted by industry giants like IBM, Sony, Nokia, HP, Siemens, and Samsung, in addition to significant telecommunications firms, governmental bodies, and financial organizations. This widespread adoption underscores the reliability and effectiveness of Famatech's solutions in diverse sectors.

Angry IP Scanner is an incredibly swift tool designed for scanning IP addresses and their associated ports. It is capable of scanning any range of IPs and operates seamlessly on multiple platforms while being lightweight in design. This tool does not require installation, allowing users to easily copy and utilize it in various environments. The process begins with Angry IP Scanner pinging each IP address to verify its status, after which it can optionally resolve hostnames and identify MAC addresses, among other functions. Furthermore, the data collected about each host can be enhanced through the use of plugins. Additional capabilities include gathering NetBIOS information, such as computer names, workgroup names, and details about currently logged-in Windows users, as well as managing favorite IP address ranges and detecting web servers. Users can also customize openers and save their scanning results in various formats, including CSV, TXT, XML, or as IP-Port lists. Through the provision of plugins, Angry IP Scanner allows for an extensive range of information to be collected about the scanned IPs. This flexibility means that anyone with Java programming skills can develop plugins to further enhance the functionality of Angry IP Scanner, making it a versatile tool for network administrators and tech enthusiasts alike.

Network Scanner is a versatile IP scanning tool designed to examine both extensive corporate networks with vast numbers of computers and smaller home networks with just a few devices. The software is capable of scanning individual IP addresses, specific computers, and entire ranges of IP addresses, accommodating an unlimited number of computers and subnets. It provides users with a comprehensive view of all shared resources, which includes both visible and hidden NetBIOS (Samba) shares, alongside FTP and web resources. Both network administrators and everyday users can leverage Network Scanner to audit their network computers or to locate accessible network resources. Not only does Network Scanner identify computers and shared resources on the network, but it also verifies access permissions, allowing users to mount them as network drives or access them through Explorer or web browsers. Furthermore, users have the option to easily export their scanning results in various formats such as XML, HTML, or text files, or to save them directly within the application for future reference. This functionality ensures that users can keep an organized record of their network resources and access rights efficiently.

This free network scanning tool identifies active computers along with their associated user names (NetBIOS), MAC, and IP addresses. Additionally, Bopup Scanner is capable of detecting and displaying HTTP (Web) servers operating on remote machines through TCP ports 80 and 8080, quickly identifying online devices, facilitating access to shared resources on other computers, and allowing users to save the findings in a text document. For advanced users, the scanner provides the option to input a specific IP range for scanning, modify the timeout settings to resolve a remote host, and can be launched from a command line interface. As a completely portable application, Bopup Scanner does not require any installation on the target machine, making it convenient to transfer via a USB flash drive to different computers. Furthermore, the software can be initiated with command line parameters that allow users to set predefined options, including specifying the IP range (both start and end addresses) and the file path to store the results. This capability makes Bopup Scanner suitable for integration into batch files, enhancing its utility as a tool for automated network monitoring tasks. Overall, this versatile scanning tool simplifies network management for both casual users and IT professionals alike.

Automatically identify the devices connected to your network using the Spiceworks IP Scanner, which provides essential details such as operating system and MAC address. Additionally, you can obtain comprehensive information regarding the hardware and software of your servers and workstations, including details like CPU specifications, storage capacity, memory availability, installed software, and serial numbers, among other things. This tool allows you to gather the necessary information with very little configuration! The IP Scanner operates as a cloud-based solution that thoroughly scans your local network and generates a sortable list of all detected devices. You have the option to filter, search, and even export the results to a CSV file. While it automatically detects and scans a local subnet, users also have the flexibility to specify a custom IP range if desired. The tool presents a variety of data for each device, including hostname, IP address, vendor information, operating system, MAC address, descriptions, open ports, and the status of the device, whether it is online or offline. The amount and type of data returned will vary based on the specific device being scanned, providing a tailored overview of your network assets. This makes it an invaluable resource for network administrators looking to manage and monitor their environment effectively.

Netlas.io, a network scanner on the Internet, is a search engine. Netlas scans DNS records for billions of domains names, hundreds and millions of HTTP responses, and SSL certificates. This information can be obtained using several tools. This tool allows you to search through the results of internet scans. Netlas scanners are non-intrusive and continuously scan internet-accessible hosts. They save their responses. DNS Search: This stores domain names and their IP addresses as well as other types of DNS records. IP WHOIS: Information on the owner and management a IP address including the IP address range and network provider name. Domain WHOIS: Information on the domain owner, including contact information, details of the registrar, registration dates and expiration dates. Certificates: A database containing SSL certificates from various sources. Netlas is a must-have tool for any cybersecurity professional.

Free IP Scanner is an efficient tool designed for rapid IP and port scanning, catering to both network administrators and everyday users who need to oversee and manage their networks effectively. Utilizing advanced multi-thread scanning technology, this application can efficiently check hundreds of computers every second. It works by pinging each IP address to determine its status and can also resolve hostnames and scan ports if needed. Additionally, Free IP Scanner provides detailed NetBIOS information, including the host name, workgroup, current logged-in user, and MAC address. Users have the option to export the gathered data into a plain text file for easy access and analysis. The software is particularly beneficial for administrators, as it allows for customizable scanning configurations, including priority levels and the maximum number of threads. Users can specify a range of IP addresses by entering the first and last IPs, and the program will seamlessly handle scenarios where the last IP address is numerically lower than the first, illustrating its flexibility and user-friendly design. This makes Free IP Scanner a versatile tool for anyone needing to monitor network assets efficiently.