Best Free IP Scanners

JDisc Discovery is a comprehensive network inventory and IT asset management solution designed to help organizations gain clear, up-to-date visibility into their IT environment. It automatically scans and maps devices across the network, including servers, workstations, virtual machines, and network hardware, to create a detailed inventory of all connected assets. This includes critical information such as hardware configurations, software installations, patch levels, and relationshipots between devices. One of the standout features of JDisc Discovery is its agentless discovery process, meaning it does not require the installation of any software on individual devices, reducing deployment time and minimizing network impact. It supports a wide range of protocols (e.g., SNMP, SSH, WMI) to gather data, making it compatible with diverse IT environments, whether they are Windows, Linux, or Unix-based.

ManageEngine Site24x7 is a comprehensive observability and monitoring solution designed to help organizations effectively manage their IT environments. It offers monitoring for back-end IT infrastructure deployed on-premises, in the cloud, in containers, and on virtual machines. It ensures a superior digital experience for end users by tracking application performance and providing synthetic and real user insights. It also analyzes network performance, traffic flow, and configuration changes, troubleshoots application and server performance issues through log analysis, offers custom plugins for the entire tech stack, and evaluates real user usage. Whether you're an MSP or a business aiming to elevate performance, Site24x7 provides enhanced visibility, optimization of hybrid workloads, and proactive monitoring to preemptively identify workflow issues using AI-powered insights. Monitoring the end-user experience is done from more than 130 locations worldwide.

OpUtils is IP address and switch port management software that is geared towards helping engineers efficiently monitor, diagnose, and troubleshoot IT resources. OpUtils complements existing management tools by providing trouble shooting and real-time monitoring capabilities. It helps network engineers manage their switches and IP address space with ease. With a comprehensive set of over 20 tools, this switch port management tool helps with network monitoring tasks like detecting a rogue device intrusion, keeping an eye on bandwidth usage, monitoring availability of critical devices, backing up Cisco configuration files, and more. Enable advanced IP scanning of IPv4 and IPv6 subnets in your network to identify the available and used IP addresses. Scan all the switches in your network, map switch ports, run port scans and view details such as physical location, user, and more. Identify rogue device intrusions and block access to these devices.

Paessler PRTG is an all-inclusive monitoring software solution developed by Paessler. Equipped with an easy-to-use, intuitive interface with a cutting-edge monitoring engine, PRTG optimizes connections and workloads as well as reduces operational costs by avoiding outages while saving time and controlling service level agreements (SLAs). The solution is packed with specialized monitoring features that include flexible alerting, cluster failover solution, distributed monitoring, in-depth reporting, maps and dashboards, and more. PRTG monitors your entire IT infrastructure. All important technologies are supported: • SNMP: ready-to-use and custom options • WMI and Windows Performance Counters • SSH: for Linux/Unix and macOS systems • Traffic analysis using flow protocols or packet sniffing • HTTP requests • REST APIs returning XML or JSON • Ping, SQL, and many more

The vast majority of network scanning software packages require some type of credentialed access to remote devices to detect operating systems. However, using TCP/IP stack fingerprinting and other technologies, Slitheris Network Discovery can identify a wide array of operating systems without credentials or authentication, including Windows (and its Edition), Linux, iOS, and Android. Slitheris can even scan for other details related to the operating system such as Windows Uptime, Cold Boot Time, Time of Day and Domain/Workgroup names, and distinguishes between Domain and Workgroup types, all without needing authentication or credentialed access. This saves the time and frustration trying various usernames and passwords or having to visit PCs and servers in person. Managed Service Providers and other IT Providers will particularly appreciate this unique feature.

The Nmap project tries to defy the stereotype of some open source software being poorly documented by providing a comprehensive set of documentation for installing and using Nmap. This page links to official Insecure.Org documentation and generous contributions from other parties. Nmap Network Scanning is the official guide to the Nmap Security Scanner, a free and open-source utility used by millions of people for network discovery, administration, and security auditing. From explaining port scanning basics for novices to detailing low-level packet crafting methods used by advanced hackers, this book suits all levels of security and networking professionals. A 42-page reference guide documents every Nmap feature and option, while the rest of the book demonstrates how to apply those features to quickly solve real-world tasks. Examples and diagrams show actual communication on the wire.

Advanced IP Scanner has proven itself through the years as a reliable and helpful tool to manage LAN and perform a wide range of networking tasks. Each new version is rigorously tested by Famatech and beta testers from around the world. The company considers all recommendations on product improvement in order to create the best possible solution for customers. Advanced IP Scanner is integrated with Radmin, Famatech’s other popular product for remote tech support. This greatly expands the capabilities of Advanced IP Scanner and simplifies the system administrator’s job. Famatech software is used by global leaders in technology, including IBM, Sony, Nokia, HP, Siemens and Samsung, as well as by major telecommunications operators, government organizations, and financial institutions.

Angry IP scanner is a very fast IP address and port scanner. It can scan IP addresses in any range as well as any their ports. It is cross-platform and lightweight. Not requiring any installations, it can be freely copied and used anywhere. Angry IP scanner simply pings each IP address to check if it’s alive, then optionally it is resolving its hostname, determines the MAC address, scans ports, etc. The amount of gathered data about each host can be extended with plugins. It also has additional features, like NetBIOS information (computer name, workgroup name, and currently logged-in Windows user), favorite IP address ranges, web server detection, customizable openers, etc. Scanning results can be saved to CSV, TXT, XML or IP-Port list files. With help of plugins, Angry IP Scanner can gather any information about scanned IPs. Anybody who can write Java code is able to write plugins and extend functionality of Angry IP Scanner.

Network Scanner is an IP scanner that is used for scanning both large corporate networks that have hundred thousands of computers along with small home networks with several computers. While the program can scan a list of IP addresses, computers and ranges of IP addresses, the number of computers and subnets is unlimited. Network Scanner will show you all the shared resources, including system and hidden NetBIOS (Samba) shared resources along with FTP and web resources. To audit network computers or use it to search for available network resources, both network administrators and regular users can use Network Scanner. Network Scanner will not only find network computers and shared resources, but also check its access rights which the user can mount as a network drive or open them in Explorer or in their browser. You can easily export the results of scanning the network to an XML, HTML or text file or store them in the program itself.

This freeware network scanner displays active computers with logged user names (NetBIOS), MAC and IP addresses. Bopup Scanner also recognizes and shows HTTP (Web) servers running on remote computers (TCP ports 80, 8080), quickly detects online computers, allows to browse shared resources of a remote computer and save results to a text file. Advanced users can enter IP range to scan, change a timeout to resolve a remote host and run the program from a command line interface. Bopup Scanner is a fully portable software. It requires no any setup and installation on a destination computer and can be easily copied to a USB flash drive to move to another PC. The program can be executed with the command line paramaters in order to specify pre-defined options, such as IP range to scan (start and end IP addresses), a path of the file where to save results. So the scanner can be used in batch files as a tool for an automated monitoring.

Discover the devices on your network automatically with the Spiceworks IP Scanner for basic information like OS and MAC Address. Or get detailed hardware and software information on your workstations and servers like CPU, storage, memory, installed software, serial number, and lots more. Get the information you need, with minimal setup! IP Scanner is a cloud tool that scans your local network and returns a sortable list of the devices it discovers. Devices can be filtered, searched, and exported to CSV. By default, it detects and scans a local subnet, though you can also define a custom IP range. The IP Scanner lists each device’s hostname, IP address, vendor, OS, MAC address, description, open ports, and if it’s up or down. The kind of data returned depends on the type of device being scanned.

Netlas.io is a network scanner and search engine on the Internet. Netlas stores DNS records of billions of domain names, hundreds of millions of HTTP responses and SSL certificates. All this information can be obtained through several tools: Responses Search: This collection consists of results from internet scans. Netlas non-intrusive scanners continuously scan internet-accessible hosts and save their responses. DNS Search: These stores domain names, their corresponding IP addresses, and other types of DNS records. IP WHOIS: Information about the owner and management of an IP address, including the IP address range, network provider name, and contact information. Domain WHOIS: Information about the domain owner and registrar, such as contact information, registrar details, registration dates, and expiration dates. Certificates: Database of SSL certificates collected from various sources. Netlas is an indispensable tool for any cybersecurity professional!

Free IP scanner is a very fast IP scanner and port scanner. It is intended for both system administrators and general users to monitor and manage their networks. Powered with multi-thread scan technology, this program can scan hundreds computers per second. It simply pings each IP address to check if it's alive, then optionally it is resolving its hostname, scans ports, etc. Free IP scanner can also display NetBIOS information: host name, workgroup, currently logged user and MAC address. The information obtained can be exported into a file as plain text file. Free IP Scanner can scan hundreds of computers per second which is ideal for administrators. You can configure it to scan in many priority levels, set number of maximum threads and so on. Use two fields of IP Range to enter first and last IP addresses. The last IP address can be less than the first one - there is no problem with translating your input.