CommonMap is an open source map project, forked from OpenStreetMap by a licence problem. CommonMap needs original softwares tuned for CommonMap. Most of software would be useful for any other open source map projects, too.
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This reimplementation is a pure java reimplementation of proj.4 ( https://sourceforge.net/projects/freshmeat_proj.4/ ) instead of a jni wrapper around the native proj.4 libraries