The basic idea here is that you can easily link to the wikipedia entry for a given topic by putting the [wikipedia]topic[/wikipedia] tag into your post. The tag is replaced by a link that executes the wikipedia search form for that topic.
The plan is to augment this with a mouseover popup containing an excerpt from the wikipedia page.

Wp-Wikipedia-Excerpt

This plugin replaces [wikipedia]topic[/wikipedia] with a wikipedia search link for that term.

Add a button in to editor, user can insert a wikipedia link and hudong wiki link next to the selected text.
<a href="http://www.hudong.com/" rel="nofollow ugc">Hudong.com</a> Inc. is running the largest Chinese wiki platform in this Web-RW era. Built on the first proprietary Chinese wiki software enabled by extensive Web 2.0 features, Hudong.com grows to be the largest “Chinese Wikipedia” with improving quality where the content is updating continuously through collective human knowledge contribution. On the other hand side, Hudong released <a href="http://kaiyuan.hudong.com/" rel="nofollow ugc">HDWiki</a>, the world’ s first Open Source Chinese wiki software HDWiki to fulfill one million websites’ demand to build up a wiki channel or independent wiki site, which helps build up an active wiki community. As the first commercial wiki application in China, Hudong also makes huge contribution to the community and society by promoting mutual trust and social collaboration.

Link 2 Wiki

Add a button in to editor, user can insert a wikipedia link and hudong wiki link next to the selected text.

Wp-Wikipedia-Excerpt vs Link 2 Wiki