How Does it Work:
The Secunia Software Inspector relies on carefully crafted “Secunia File Signatures” to recognise applications on your system. The detected applications are then matched against our “Secunia Advisory Intelligence” to determine whether an application is up-to-date or not. The results are then used to advise you on how to update to more secure [...]

SSA (Security System Analyzer) is free non-intrusive OVAL-Compatible software. It provides security testers, auditors with an advanced overview of the security policy level applied.
Features :

OVAL-compatible product
SCAP (Security Content Automation Protocol)
Perform a deep inventory audit on installed softwares and applications
Scan and map vulnerabilities using non-intrusive techniques based on schemas
Detect and identify missed patches and hotfixes
Define a [...]

NBTscan is a program for scanning IP networks for NetBIOS name information. It sends NetBIOS status query to each address in supplied range and lists received information in human readable form. For each responded host it lists IP address, NetBIOS computer name, logged-in user name and MAC address.
 
This program is a successor of a perl [...]