Net-snmp extensions

Here are some links to net-snmp extensions and net-snmp-based software:

mod-apache-snmp: monitor Apache2 with SNMP (dlmod module implementing APACHE2-MIB)
Bacula SNMP subagent: perl-based net-snmp "pass" extension for the Bacula backup tool
Squid SNMP support: using "proxy" (what else, it's Squid ;-))
Jasmin: an implementation of the IETF Script MIB (RFC3165) for Java as the scripting language (dlmod module)
Ramon: a RMON2 Network Monitoring Agent (RFC-2021, dlmod module)
HP Insight Management Agents for Servers: dlmod module implementing HP private MIBs for HP servers
VMware ESX server 2.0 SNMP agent (using AgentX, commercial)
Solaris kstat.pl (for pass_persist, by Jean-Sebastien Morisset)
BIND9 statistics (using "exec")
Postfix Mail stats (using "pass")
MySQL monitoring (using perl subagent)
SNMP agent for PostgreSQL (in C)
Combining Net-SNMP and SUNWmasf on Solaris (using proxy)
Net-SNMP module for LVS (using dlmod)
OpenHPI SNMP Subagent (AgentX, implemented based on mib2c.array-user.conf)
Net-SNMP Subagent for NFSv3 stats (AgentX, implemented in Perl)
802.11 interface: Net-SNMP mib modules in C (Leiden Institute of Advanced Computer Science, NL)
Linux Disk IO (using exec)
OSSP snmpdx (framework for Perl-based agent extensions using pass/pass_persist)
Linux software RAID monitoring (dlmod module)
Bind9 Statistics (New Format) (perl subagent)