Users who do analysis of offline database dumps, or otherwise do quite a bit of scraping.

<ul>
<li><a href="http://en.wikipedia.org/wiki/User:Bluemoose">bluemoose</a>, <a href="http://en.wikipedia.org/wiki/User:Bluemoose/Unstubby_stubs">superstubs</a> and <a href="http://en.wikipedia.org/wiki/User:Bluemoose/Untagged_stubs">unstubs</a>
<li><a href="http://en.wikipedia.org/wiki/User:DFBot">DFBot</a>, <a href="http://en.wikipedia.org/wiki/User:Dragons_flight/RFA_summary">RFA</a> and AFD summaries
<li><a href="http://en.wikipedia.org/wiki/User:Mathbot">Mathbot</a>, RFA edit summaries
<li><a href="http://en.wikipedia.org/wiki/User:Erik_Zachte">Erik Zachte</a>, <a href="http://en.wikipedia.org/wikistats/EN/Sitemap.htm">wikistats</a>
<li>various people at <a href="http://en.wikipedia.org/wiki/Wikipedia:WikiProject_edit_counters">Wikipedia:WikiProject edit counters</a>
<li><a href="http://magnusmanske.de/wikipedia/">magnus manske</a> (sweet!)
</ul>