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Search Engine Optimization (SEO) for Ruby on Rails applications.
Config files for bash, ruby, gem, etc used by Dmytro Shteflyuk & Alexey Kovyrin
WordPress plugin which allows you to insert code snippets into the post with nice syntax highlighting.
Simple and easy to use Ruby code profiler, which could be used as a Rails plugin.
Google Go Client for Sphinx
RRD statistics collector implemented in Go