Here are some handy plugins for Eclipse that I came across via an IBM Developerworks article by Paul Duvall. CheckStyle: For coding standardsPMD's CPD: Enables discovering code duplicationCoverlipse: Measures code coverageJDepend: Provides dependency analysisEclipse Metrics plugin: Effectively spots complexity I have used the Checkstyle plugin for a few years now and found it extremely useful.  [...]