Service Monitoring

ManageEngine Applications Manager 7
Applications Manager monitors performance and availability of application servers (JBoss, WebSphere, Oracle AS, WebLogic, Tomcat, Microsoft .NET and Java/J2EE Web Transactions), databases (MySQL, SQL Server,Oracle, IBM DB2), web sites, systems, and network services. It helps IT Administrators and Operators managing an IDC or the IT infrastructure of an enterprise by providing fault and performance management capabilities.
applications management, server monitoring, database monitoring, system monitoring, service monitoring, website monitoring, jmx/snmp consoles, business service management, weblogic, websphere,

AdRem NetCrunch 4.1
NetCrunch automatically discovers network and monitors critical devices, services and applications. It is able to present physical and logical network topology in the form of customizable graphical maps. If any problem appears NetCrunch notifies administrator or executes corrective actions.
network monitoring, network management, network diagnosis, graphic maps, ip monitoring, management, diagnostics, service monitoring, snmp, tcp/ip,

Simple Server Monitor 2.0.4
Simple Server Monitor (SSM) is a powerful, yet easy to use server monitoring utility. It allows you to monitor the status of your servers and web applications from your desktop. Simple Server Monitor runs as a Windows Service with GUI monitoring console. When a monitor fails, you are notified by a pop-up message, an e-mail alert, and/or a sound alert. Charts monitoring performance. Supports Ping, HTTP, FTP, SMTP, POP, IMAP, and Custom monitors.
server monitoring, service monitoring, smtp monitor, pop monitor, imap monitor, http monitor,