gcviewer ☆

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Description:
Java garbage collection visualization tool

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: java garbage-collection jvm visualization performance monitoring

Install: brew install gcviewer

About:
GCViewer is a lightweight Java utility that parses and visualizes garbage collection logs generated by various JVMs, including Oracle HotSpot, IBM J9, and OpenJDK. It renders key performance metrics like heap usage, pause times, and throughput into intuitive charts, enabling developers to quickly identify memory bottlenecks and optimize application performance.

Key Features:

Parses GC logs from multiple JVM vendors (Oracle, IBM, OpenJDK, etc.)
Interactive charts for heap size, GC pauses, and accumulation
Supports both real-time log monitoring and historical log analysis
Export charts to PNG or CSV for reporting

Use Cases:

Diagnosing memory leaks and excessive garbage collection pauses in production Java applications
Comparing the effectiveness of different GC algorithms (e.g., G1GC vs. ParallelGC) on specific workloads
Capacity planning by analyzing long-term heap usage trends

Alternatives:

VisualVM – VisualVM offers deeper JVM profiling and heap dump analysis but is heavier and less focused on historical GC log parsing.
GCEasy – GCEasy is a web-based service offering similar analysis with AI-driven recommendations, whereas GCViewer is a free, offline desktop application.

Version History

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