tagtraum industries GCViewer 一個分支，前者2008年已停止更新，一個查看并分析垃圾回收日志文件的小工具.支持Oracle, Sun, IBM, HP and BEA的JVM. 分支增加了Oracle's java 1.6 + 1.7 gc日志（包括G1）
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GNU LGPL協議.

雙擊 gcviewer-1.3x.jar就可以運行?GCViewer (gui)?,或者命令行運行（需要java 1.7 vm）：

 java -jar gcviewer-1.3x.jar 

命令行分析日志，并產生報表:

java -jar gcviewer-1.3x.jar gc.log summary.csv [chart.png]

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Supported verbose:gc formats are:

- Oracle JDK 1.8 (experimental support) -Xloggc: [-XX:+PrintGCDetails] [-XX:+PrintGCDateStamps]
- Sun / Oracle JDK 1.7 with option -Xloggc: [-XX:+PrintGCDetails] [-XX:+PrintGCDateStamps]
- Sun / Oracle JDK 1.6 with option -Xloggc: [-XX:+PrintGCDetails] [-XX:+PrintGCDateStamps]
- Sun JDK 1.4/1.5 with the option -Xloggc: [-XX:+PrintGCDetails]
- Sun JDK 1.2.2/1.3.1/1.4 with the option -verbose:gc
- IBM JDK 1.3.1/1.3.0/1.2.2 with the option -verbose:gc
- IBM iSeries Classic JVM 1.4.2 with option -verbose:gc
- HP-UX JDK 1.2/1.3/1.4.x with the option -Xverbosegc
- BEA JRockit 1.4.2/1.5/1.6 with the option -verbose:memory [-Xverbose:gcpause,gcreport] [-Xverbosetimestamp]

Best results are achieved with: -Xloggc: -XX:+PrintGCDetails -XX:+PrintGCDateStamps