# Install gcviewer with Homebrew Java garbage collection visualization tool. Version 1.37 via Homebrew; verified 2026-05-25. ## Install ```sh sudo av install brew:gcviewer ``` Additional install commands: ### macOS - Homebrew (100%): ```sh brew install gcviewer ``` Evidence: local Homebrew formula metadata ## Package facts - **Package key:** brew:gcviewer - **Package manager:** Homebrew - **Package manager page:** - **Version:** 1.37 - **Source summary:** Java garbage collection visualization tool - **Homepage:** - **Repository:** - **Upstream docs:** - **License:** LGPL-2.1-or-later - **Source archive:** - **Last updated:** 2026-05-25T22:03:14Z - **Generated:** 2026-07-08T07:18:31+00:00 ## Executables - gcviewer (cli) - gcviewer (alias) ## Dependencies - openjdk ## Install behavior - Post-install hook: not defined - Bottle: available on all ## Freshness - Page generated: 2026-07-08 - Package-manager version: 1.37 - Package-manager updated: 2026-05-25 - Local data: ok - Upstream repository: https://github.com/chewiebug/GCViewer - info: No cached GitHub release or tag data was available. ## 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 - - - - - - ## Security Notes narrow executable package without higher-risk signals. - **Geiger risk:** green / low - narrow executable package without higher-risk signals ## Source Database Details - **Source Database:** Homebrew formula API - **Tap:** homebrew/core - **Full Name:** gcviewer - **Version Scheme:** 0 - **Revision:** 0 - **Bottle Stable Root URL:** - **Deprecated:** no - **Disabled:** no - **Keg Only:** no - **URL Keys:** stable ## Related links - [Source-control packages](https://www.automicvault.com/pkg/source-control-tools/) - Belongs to a source-control command family. - [Terminal utility packages](https://www.automicvault.com/pkg/terminal-utilities/) - Matched terminal and command-line workflow metadata. - [Text processing packages](https://www.automicvault.com/pkg/text-processing-tools/) - Matched text, document, or structured-data processing metadata. - [Developer build packages](https://www.automicvault.com/pkg/developer-build-tools/) - Matched build, compiler, generator, or developer workflow metadata. - [openjdk](https://www.automicvault.com/pkg/brew/openjdk/) - Runtime dependency declared by Homebrew. - [jhiccup](https://www.automicvault.com/pkg/brew/jhiccup/) - Shares av.db curated category or tags: cli, developer-tools, java, jvm, performance. - [bnd](https://www.automicvault.com/pkg/brew/bnd/) - Shares av.db curated category or tags: cli, developer-tools, java. - [byteman](https://www.automicvault.com/pkg/brew/byteman/) - Shares av.db curated category or tags: cli, developer-tools, java. - [cfr-decompiler](https://www.automicvault.com/pkg/brew/cfr-decompiler/) - Shares av.db curated category or tags: cli, developer-tools, java. - [checkstyle](https://www.automicvault.com/pkg/brew/checkstyle/) - Shares av.db curated category or tags: cli, developer-tools, java. - [fastjar](https://www.automicvault.com/pkg/brew/fastjar/) - Shares av.db curated category or tags: cli, developer-tools, java. - [helidon](https://www.automicvault.com/pkg/brew/helidon/) - Shares av.db curated category or tags: cli, developer-tools, java. - [httpstat](https://www.automicvault.com/pkg/brew/httpstat/) - Shares av.db curated category or tags: cli, developer-tools, performance. - [sjk](https://www.automicvault.com/pkg/brew/sjk/) - Both packages touch the same language runtime or ecosystem. Shared terms: cli, developer, developer-tools, java, jvm. - [jvmtop](https://www.automicvault.com/pkg/brew/jvmtop/) - Both packages touch the same language runtime or ecosystem. Shared terms: cli, developer, developer-tools, java, jvm. ## Combined YAML source View the package source record on GitHub. [combined/gcviewer.yml](https://github.com/automic-vault/db/blob/main/combined/gcviewer.yml) ## Sources - Nucleus package database - Geiger risk classifier - package-page enrichment - curated package history - package version freshness - av.db category and tag curation - package relationship graph - cross-ecosystem install command graph