The .stg file extension is related to the freeware utility called SNMP and used for its graphic files from traffic grapher.
There are 3 other file types using
the STG file extension!
.stg - Microsoft ActiveSync backup
.stg - Statistica graphics file
.stg - Visual Pinball high scores file
STG file extension - SNMP traffic grapher network graphic file
What is stg file? How to open stg files?
File type specification:
The STG file extension is associated with the SNMP a freeware utility that allows monitoring of supporting SNMPv1 and SNMPv2c devices including Cisco, Livingstone, Riverstone etc. The .stg file stores graphic file from traffic grapher.