SNMP MIB Browser

Does anyone know any neat tools for browsing a SNMP MIB file?

Every tool I have downloaded and played with so far that has claimed the capability has instead been a SNMP browser. I only want to explore the MIB (definition) so that I can identify potential information that could be available on certain hardware.

I've Googled out this one: http://www.snmpsource.com/snmp-mib-browser.asp

Is that any good for you?