BLM Software
It's in the CVS project called "blm" which supports the various flavors of VME BLM installations.

One of the VME Mooc drivers included in this project is the High Voltage power supply card by Brian Fellenz of Instrumentation. This card
is found in non-BLM systems also.

The system reboot devices tend to not work (for the MI BLMs, at least). But you can connect to the VME Crate with a
(inside-the-firewall) web browser and do a VME reset through that interface. To get the crate IP name for the MI BLMs,
just substitute a 'c' for the second 'm' in the name, e.g. the crate for mblm10 is mblc10. The just point the browser at that system.