Applications Manager offers a single integrated monitoring tool suitable for application monitoring, database monitoring, system monitoring, website monitoring, services monitoring, and custom application monitoring. Applications Manager proactively monitors the applications and servers and notifies problems in network through e-mail/SMS. It provides graphs and reports that display performance and availability data of the monitors. Application monitoring helps you achieve higher availability and optimized performance of your application servers through Microsoft .NET Monitoring, Oracle Application Server, JBoss Monitoring, Tomcat Monitoring, WebLogic Monitoring, WebLogic Integration Monitoring, WebSphere Monitoring J2EE Web Transactions and Java Runtime. Database Management feature accelerates the detection, diagnosis, and resolution of business-critical database performance issues before they affect end-users. It notifies DBAs and Operators of database problems even before they could interrupt business availability. The databases that are supported are MySQL, Oracle, SQL Server, Sybase and DB2. Server Monitoring involves monitoring of Windows, Linux, HP-Unix, Tru64 Unix, Solaris, FreeBSD, IBM AIX, Mac OS systems. SAP performance can be monitored by the SAP Module. Website monitoring involves URL Monitoring , URL Sequence Monitoring and URL Content Monitoring.
Services Monitoring feature monitors the health and availability of the following services : JMX applications, Microsoft Exchange Server, Service Monitoring (any TCP/IP port),SNMP Agent,Web Server (Apache & IIS).Custom Monitors enables you to create JMX consoles and SNMP Consoles and to monitor your Java applications or other applications that expose management information through SNMP & JMX. It enables SLA management by tracking SLAs. Further, the business views are empowered by integrating Applications Manager with Google Maps.

• AdventNet SNMP API - Free Edition 4
  AdventNet SNMP API offers a comprehensive development toolkit for SNMP-based network management applications. AdventNet's SNMP stack comprises a set of powerful Java SNMP library...

• ManageEngine Applications Manager 8
  Availability and Performance monitoring tool that helps monitor applications, servers, databases, web services, websites, and custom applications