Open Source ChromeOS Application Performance Monitoring Tools

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.

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.

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.

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

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.

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.