ThingsPage is described as 'Sensor software detects and authenticates endpoints without a dedicated hardware. No PC agents are required. Installing the Sensor at one Windows machine at each network makes it easy to have centralized management of multiple networks' and is an app in the Network & Admin category. There are more than 10 alternatives to ThingsPage for a variety of platforms, including Windows, Android, Linux, Mac and iPhone. The best alternative is Angry IP Scanner, which is both free and Open Source. Other great apps like ThingsPage are Fing (Freemium), Advanced IP Scanner (Free), Port Authority (Free, Open Source) and Lansweeper (Freemium).
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.
Reliable and free network scanner to analyse LAN. The program shows all network devices, gives you access to shared folders, provides remote control of computers (via RDP and Radmin), and can even remotely switch computers off. It is easy to use and runs as a portable edition.
A handy systems and security-focused tool, Port Authority is a very fast Android port scanner. Port Authority also allows you to quickly discover hosts on your network and will display useful network information about your device and other hosts.
Umit: The Nmap Frontend: Umit was designed to accomodate and run more than one scan at time. Each scan is executed and shown inside a Scan Tab, which has a title and organize every information obtained in the scan result.