macOS
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brew install gcviewerlocal Homebrew formula metadata
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Install gcviewer with Homebrew
Java garbage collection visualization tool. Version 1.37 via Homebrew; verified 2026-05-25.
install
Additional install commands
overview
Package summary
Java garbage collection visualization tool
Project links
Commands and aliases
- gcviewer
history
Project history and usage
GCViewer is a Java tool for visualizing and summarizing garbage-collection logs. It covers historical and modern JVM log formats from Sun/Oracle, IBM, HP, and BEA, and can be used either as a GUI application or from the command line.
Project history
The current repository is a fork of tagtraum industries' GCViewer. Its GitHub metadata says tagtraum development stopped in 2008 and that this fork aimed to improve support for Sun/Oracle Java 1.6 and later garbage-collector logs, including G1. The README credits Hendrik Schreiber for GCViewer up to 1.29.
Adoption history
GCViewer fits the Java operations era in which verbose GC logs were exchanged as files and interpreted offline. The changelog shows maintenance following JVM logging changes: G1 work in the 1.31 series, Maven Central publication in 1.33, command-line image/report generation, Java 8 updates, unified logging, Shenandoah, ZGC, and a 2026 update for newer parser cases.
How it is used
Users open or pass GC log files to GCViewer, then inspect charts, pause summaries, heap metrics, parser warnings, and exported summaries. The command-line mode can generate CSV-style reports and optional chart images, making it useful in scripted JVM performance investigations.
Why package nerds care
GCViewer is notable because it packages years of JVM log-format drift into one small desktop-and-CLI artifact. It preserves support for vendor-era Java logs while continuing to parse newer OpenJDK unified logging, which is exactly the kind of compatibility surface package maintainers care about.
Timeline
- 2008: Repository metadata says tagtraum development had stopped.
- 2011: GitHub records the chewiebug GCViewer repository creation.
- 2012: The 1.31 series adds G1 parser work and OS X bundle support.
- 2013: GCViewer 1.33 publishes to Maven Central and adds command-line image generation.
- 2019: GCViewer 1.36 adds unified logging support, Shenandoah, ZGC, and Go GC logging.
- 2026: GCViewer 1.37 is released with parser and UI updates.
Related projects
- The original tagtraum GCViewer is the direct predecessor named by the project.
- Sun/Oracle HotSpot, OpenJDK, IBM JVM, HP-UX JVM, and BEA JRockit logs are supported input families.
- gchisto is referenced by the changelog as a related simple-GC-log export target.
Sources
- https://api.github.com/repos/chewiebug/GCViewer
- https://api.github.com/repos/chewiebug/GCViewer/releases
- https://github.com/chewiebug/GCViewer
- https://github.com/chewiebug/GCViewer/wiki
- https://raw.githubusercontent.com/chewiebug/GCViewer/master/README.md
- https://raw.githubusercontent.com/wiki/chewiebug/GCViewer/Changelog.md
security posture
Risk level: green
narrow executable package without higher-risk signals.
Risk classifier
green risk · low confidence · appliance
Why
- narrow executable package without higher-risk signals
Signals
- metadata:no-higher-risk-signals
Install behavior
- No Homebrew post-install hook is recorded in formula metadata.
- Homebrew bottle metadata is available for 1 platform targets.
- Installs with 1 runtime dependencies.
Recommended review
Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.
executables
Installed executables
| Command | Kind | Exposure | Note |
|---|---|---|---|
gcviewer | cli | global executable |
freshness
Version and freshness
These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.
page generated2026-07-08
manager version1.37
manager updated2026-05-25
local dataok
upstreamnot checked
latest detectednot detected
https://github.com/chewiebug/GCViewer
- infoNo cached GitHub release or tag data was available.https://github.com/chewiebug/GCViewernone confidence
install metadata
Package metadata
| Package key | brew:gcviewer |
|---|---|
| Version | 1.37 |
| Package manager | Homebrew |
| Package manager page | https://formulae.brew.sh/formula/gcviewer |
| Homepage | https://github.com/chewiebug/GCViewer |
| Repository | https://github.com/chewiebug/GCViewer |
| Upstream docs | https://github.com/chewiebug/GCViewer#readme |
| License | LGPL-2.1-or-later |
| Source archive | https://downloads.sourceforge.net/project/gcviewer/gcviewer-1.37.jar |
| Last updated | 2026-05-25T22:03:14Z |
| Pulse | updated |
| Dependencies | openjdk |
| Bottle | available (on all) |
| Homebrew post-install | not defined |
| Service | none declared |
registry facts
Source database details
| Source Database | Homebrew formula API |
|---|---|
| Tap | homebrew/core |
| Full Name | gcviewer |
| Version Scheme | 0 |
| Revision | 0 |
| Bottle Stable Root URL | https://ghcr.io/v2/homebrew/core |
| Deprecated | no |
| Disabled | no |
| Keg Only | no |
| URL Keys |
|
source trail
Generated from repository data
This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.
Combined YAML source
View the package source record on GitHub.
Used sources
- Geiger risk classifier
- Nucleus package database
- av.db category and tag curation
- cross-ecosystem install command graph
- curated package history
- package relationship graph
- package version freshness
- package-page enrichment