Sonatype helps open source projects to set up Maven repositories on https://oss.sonatype.org/
'com.github.relaxng:relaxngDatatype:2011.1'
<dependency>
<groupId>com.github.relaxng</groupId>
<artifactId>relaxngDatatype</artifactId>
<version>2011.1</version>
</dependency>
<dependency org="com.github.relaxng" name="relaxngDatatype" rev="2011.1"/>
"com.github.relaxng", "relaxngDatatype", "2011.1"