Open Source BSD Application Performance Monitoring Tools

openRelax is a host, service and application monitoring program. It collects all data in the MySQL DB, where they are then indicated. It collects SNMP, windows counter, syslog, snmp-traps and other data.

HEYMon is a Software, Server and Application Monitoring platform. HEYMon allows monitoring requests using SQL! You can now query your enterprise to gather real-time details. HEYMon can monitor anything that is important for you: - Query a database: Look for patterns, perform queries, or generate statistics. - Parse a log file: Look for errors, or other alert conditions and statistics. - Read server metrics: Available RAM, Diskspace, processes, Windows Services - Read Windows Event logs - Monitor Security logs and web request logs - Monitor Guidewire software applications And much more! HEYMon has a Java API where you can create custom components to monitor whatever you need. The HEYMon server is supported on almost all operating systems including Linux, Windows XP/Vista/7/8, MacOSX, and UNIX. HEYMon can monitor a few systems or can scale to monitor hundreds of systems if needed. Checkout our Discussion Section for the latest news and information about HEYMon

Hyperic is application monitoring and performance management for virtual, physical, and cloud infrastructures. Auto-discover resources of 75+ technologies, including vSphere, and collect availability, performance, utilization, and throughput metrics.

Kieker is a framework for continuous monitoring and dynamic analysis of distributed software systems. Being designed for continuous operation, it induces only a low overhead. The TraceAnalysis tool allows to analyze and visualize trace information.

MyPerf4J is an open source Java performance monitoring and profiling tool designed to help developers and operations teams analyze application behavior with minimal overhead. It focuses on providing lightweight yet high-precision metrics collection for method execution times, throughput, and latency, making it particularly useful in high-performance production environments. The project emphasizes low performance impact by using efficient time recording and aggregation techniques, allowing continuous monitoring without significantly affecting application speed. MyPerf4J supports both real-time monitoring and offline analysis through log aggregation and visualization tools. It integrates well with common Java ecosystems and can be embedded into existing services with relatively little configuration effort. Overall, the project targets teams that need deep insight into Java application performance while maintaining production stability and observability discipline.

NSIA (Network System Integrity Analysis) is a web application monitoring system that scans web applications for potentially unwanted context such as defacements, unauthorized changes, errors, information leaks, profanity, compliance issues, etc

Ortro is an open source framework designed to make easy activities for job scheduling and system/application monitoring.

Stagemonitor is a Java monitoring agent that tightly integrates with time series databases like Elasticsearch, Graphite and InfluxDB to analyze graphed metrics and Kibana to analyze requests and call stacks. It includes preconfigured Grafana and Kibana dashboards that can be customized.

Test case framework primarily intended for application monitoring. It provide users with an API for writing test cases as Java classes. Test cases are configured in XML and published in a container for local or remote execution. Integrates with Nagios.

Webfunny is a lightweight front-end performance monitoring and user analytics platform designed for private deployment environments. It combines real-time client-side monitoring with customizable event tracking, allowing teams to collect both technical performance metrics and business interaction data from web applications. The system provides dashboards for error analysis, page performance, API latency, and user behavior, enabling comprehensive visibility into frontend health. Its architecture is intentionally simple to deploy, requiring only a few setup steps to run a fully self-hosted monitoring stack. In addition to performance insights, the platform includes flexible data visualization and funnel analysis tools that support product and operations teams. By merging monitoring and analytics into a single private solution, webfunny_monitor offers organizations a cost-effective alternative to commercial frontend observability platforms.

Packetbeat is a distributed packet monitoring system that can be used for application performance management. Think of it like a distributed real-time Wireshark with a lot more analytics features. Packetbeat agents sniff the traffic between your application processes, parse on the fly protocols like HTTP, MySQL or REDIS and correlate the messages into transactions. For each transaction, the agents insert a JSON document into ElasticSearch where they are stored and indexed. The Kibana UI application provides advanced visualizations and ad-hoc queries. We have extended Kibana with our own panel types for visualizing network topologies.