Users
This is a list of companies, organizations, projects, and individuals using circuits in some fashion. If you use circuits, don't be hesitant to add yourself to the list.
Realxtend next generation virtual worlds viewer, Naali, for Python components. . Some info in RexWiki py module manager docs and the code in Naali svn pymodules. Worked on by Toni Alatalo and Petri Aura at Playsign in collaboration with other Realxtend developers.
TAMS' (''Owned by PriceWaterHouseCoopers'') report generation system (''Sorry no docs or source''), developed by James Mills and Michael Anthon.
Mangahelpers profiler for checking our webpages generation times, sql and cache queries times, project page on https://launchpad.net/website-profiler
MIT Media Lab uses circuits for several internal prototypes
kdb a plugable IRC Bot (framework).
sahriswiki a Wiki engine using circuits.web and mootools (for the user interface) that powers my (JamesMills) personal website.