Wireless Network Watcher - scans your wireless network and displays the list of all computers and devices that are currently connected to your network.
Freshservice - Freshservice: the one-stop cloud solution for all your IT management needs.
Nmap - Nmap Free Security Scanner, Port Scanner, & Network Exploration Tool. Download open source software for Linux, Windows, UNIX, FreeBSD, etc.
Freshdesk - Freshdesk is a cloud-based customer support software that lets you support customers through traditional channels like phone and email, social channels like Facebook and Twitter, and your own branded community
Angry IP Scanner - Open-source and cross-platform network scanner designed to be fast and simple to use
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.