Zabbix - Track, record, alert and visualize performance and availability of IT resources
netcat - Netcat is a featured networking utility which reads and writes data across network connections...
ManageEngine RecoveryManager Plus - RecoveryManager Plus is one such enterprise backup solution which has the ability to easily backup and restores both the domain controllers and virtual machines.
PortMapper - Do you need to map a specific TCP or UDP port on your machine to another port on another machine?
Lastpass - LastPass is an online password manager and form filler that makes web browsing easier and more secure.
Komodia Relay - Free open source tool to perform TCP based session relay