Links to similar tools

• Big Sister is a tool similar to OpenSMART. The main differences (IMHO) are:
  • No Database backend
  • No XML Configuration for checks
  • Not Pure Perl (at least for the agents)
  • decentral management for agents/updates
  • no sla reporting
• Nagios is a tool similar to OpenSMART,too. Many users, many checks. I think the main difference is, that nagios is directed at network monitoring, where OpenSMART is directed at application monitoring.
• Just For Fun Network Management System" monitors "just" Network checks (SNMP/Syslog/TCP Ports)
• GKrellM monitors your Desktop (I think). No monitoring for many servers
• OpenNMS, another Network Managment System. Directed to network monitoring through SNMP.
• Big Brother very similar to nagios, BigSister or OpenSMART, but for commercial use not free!

Other useful links

• Yaps IMHO a good tool to send sms through a modem
• PsTools from Sysinternals Needed for OpenSMART Agent on Windows
• Perl from ActiveState for win32 agents