100 Bullets
Official DC/Vertigo Comics site, with e-comic, desktop images, character biographies and issue information.
Calling The Shots
Fan page, with news, detailed guide to the series, and merchandise links.
Comic Vault: 100 Bullets
A review of issue 11, with introduction, general information and related works.
The Comics Journal: 100 Bullets
A synopsis and review of the series.
The Continuity Pages: 100 Bullets
Information, including graphics, links, and analysis.