vPerformer is a load and performance testing product for web applications. vPerformer reveals the behavior of your web application when it is subject to a large load.

Longitude is agentless application performance and network monitoring software that monitors, alerts and reports on the availability and performance of critical Windows, Unix, and Linux applications, systems, networks and service level agreements.

ipMonitor delivers basic up/down monitoring for your network devices, servers, and apps.

FireScope Workbench is a collection of free tools designed to make life easier for IT operators. Features a Service Modeler with dependency discovery, extremely fast Ping Sweep utility and MIB browser/walker combined. More free tools coming soon.

LANView is a tools collection for network administrators, that combines several network diagnostics and monitoring tools into a single interface. It includes a network sniffer (with filtering).

Create a diagram of your local area network quickly with this powerful network diagrammer and mapper, save it in popular graphical formats, copy and paste it to a document and export it to Microsoft Visio. The program scans LAN switches via SNMP.

pt360 Tool Suite provides network monitoring and diagnostic tools in a single interface. Features are device discovery, Cisco Configurator, Switch Port Mapper, NetFlow Listener, TFTP server, SNMP, WMI, Port, DNS, Syslog, application monitoring

Security Center is network security software for real-time intrusion detection IDS and prevention IPS that helps to protect networks from potential intruders, unauthorized connections and malicious activities.

A free multithreaded IP, SNMP and NetBIOS scanner. Both system administrators and general users can use this software. It pings computers, scans for listening TCP ports and displays shared network resources (including system and hidden).

Switch Center is network management software for managed network switches and hubs from any vendor supporting SNMP BRIDGE-MIB that helps to discover, monitor and analyze networks connectivity and performance.

AXIGEN Mail Server-carrier class messaging solution backed up by first rate tech support;available for Windows XP and Windows Server 2003;provides (E)SMTP/POP3/IMAP4/Webmail services,centralized Web/CLI Admin,groupware,FREE technical support

InterMapper monitors everything on your network and alerts you when problems arise--before your customers notice. It uses pings and SNMP to check routers, switches and other network infrastructure and uses synthetic transactions to test your servers.

Syslog Manager is a syslog server. It can receive, log, display and forward Syslog messages from all syslog enabled device. It can receive TCP and UDP syslog messages and send out alert message by Email, SMS, SMS-HTTP, Syslog, SNMP and Pager.

Syslog Manager is a syslog server. It can receive, log, display and forward Syslog messages from all syslog enabled device. It can receive TCP and UDP syslog messages and send out alert message by Email, SMS, SMS-HTTP, Syslog, SNMP and Pager.

TheOne Server Monitor can monitor multimple URLs/Website, Email, Database, Network, Window process and Unix/Linux servers. It generates alerting message/notification by Email, SMS, Syslog, SNMP or Pager automatically when the service is failed.

TheOne Server Monitor Pro can monitor multimple URLs/Website, Email Database,Network,Window process and Unix/Linux servers. It will generates alerting message/notification by Email, SMS, Syslog, SNMP or Pager automatically when the service is failed.

Create visual network map, monitor servers, be notified on failures.

ManageEngine VQManager is a powerful, web-based, passive VoIP monitoring software tool. VQManager monitors real-time VoIP QoS metrics to give instantaneous reports, self-configurable alerts & in-depth fault probing – all from a single web interface.

Reliable network and website monitoring. Sensor types include PING, PORT, HTTP, HTTPS, HTTP Advanced, HTTP Transaction, DNS, SMTP, POP3, FTP, SNMP, as well as various native Windows system sensors and native SQL sensors for MS SQL, MySQL and Oracle.

Free SNMP provides basic support for Simple Network Management Protocol (SNMP), allowing users to perform such tasks as viewing and browsing MIBs, performing Walk operation. The tool is designed with a user-friendly interface and is easy to use.