| Known as alternative groups, not carried by all Usenet sites. e.g. alt.chinese.text | |
| Biology science, biologic technology and related matters, e.g, bionet.immunology |
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| Computer science, information technology, including hardware,software,etc. e.g. comp.os.unix.s5r4 |
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| Information about Usenet software,network administration, documents. e.g. news.answers |
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| Discussion about topics on scientific research and applications. e.g. sci.aeronautics |
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| Topics that address the social issues or are related to a social culture, e.g. soc.woman |
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