TVTracker.com, the showbiz research and data-tracking firm that Variety acquired in June, has released its seventh annual Agency Power List, which ranks the top agents and agencies selling to TV in both the literary and talent arenas.

TVTracker’s Power List is built on quantifiable data, ranking individual agents based on the aggregate number of clients (writers, non-writing producers, principal cast and staff directors) on broadcast and cable network series for the 2011-12 season. All primetime and latenight, scripted and variety shows are considered. Clients working on multiple series are counted for each show. Writing teams are counted as one client, as it provides a more accurate overall accounting.

Among other info, the 200-page guide offers detailed access to almost everyone working in TV, including contact info for all of the shows’ writing staffs, showrunners, execs and producers.

The complete list, sorted by various criteria including agency, buyer occupation, is available for download at TVTracker.com for $49.

TVTracker is part of Variety’s paid premium content. While a subscription gives readers access to all content from Variety proper — print, iPad, news alerts, etc. — other elements, such as the Variety Archives (issues going back to 1906) and TVTracker are part of a separate tier.

TVtracker.com, founded in 1999, provides clients with development and production info, tracking and analyzing all three major divisions of filmed entertainment in the U.S., including television, feature film and digital entertainment. TVtracker.com resides in the Variety office building in Los Angeles and serves more than 250 of the leading brands in entertainment and media. – — Variety staff