Total Network Inventory: Professional PC audit and network inventory management software - fits best for a for companies of all sizes. Free for 60 days.
Network Inventory Advisor - Network Inventory Advisor audits all network software and hardware simply and efficiently
FlexiSPY - FlexiSPY is the original "phone spy" software - it's been on the market since 2005.
Lansweeper - Lansweeper discovers Windows, Linux and Mac machines in your network.
Spyera - Spyera is the name of an undetectable tracking and monitoring application that offer its users the comprehensive set of tools for remote monitoring and tracking of any smartphone.
Nmap - Nmap Free Security Scanner, Port Scanner, & Network Exploration Tool. Download open source software for Linux, Windows, UNIX, FreeBSD, etc.
MobiStealth - MobiStealth is the name of a most comprehensive smartphones monitoring application for monitoring and tracking the mobile phones of all types from an internet enabled computer.