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
Fing - Discover which devices are connected to any Wi-Fi network, map devices, detect intruders, assess...
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.
Advanced IP Scanner - Advanced IP Scanner shows all network devices, gives you access to shared folders, and can even remotely switch computers off. Download it Free.