All the day jobs...
There are some of the projects I have work on over the years.
Prominently working on Macro4's UniQ products. The companies flagship product was UniQPrint which handled batch printing.
Monitoring the products became important so I implemented the SNMP agents for the UniQ products and wrote integration software to link HP OpenView and other network monitoring software. The Management Information Base (MIB) contains references to the IANA Enterprise Specific Number (search for 2196) which I set up for the company.