Wikipedia article on client honeypots.

WebMaven is an intentionally broken web application. It is intended to be used in a safe legal environment (your own host) as a training tool, as a basic benchmark platform to test web application security scanners and as a Honeypot.

SCADA HoneyNet Project: Building Honeypots for Industrial Networks (SCADA, DCS, and PLC architectures).

An Introduction to second generation honeynets (honeywalls).

Website set up to deliver almost infinite numbers of bogus email addresses to email harvesting bots.

Aninternational, non-profit (501c3) research organization dedicated to improving the security of the Internet at no cost to the public.

Seller of HoneyPoint family of products.

A program that acts as a honeypot for spammers who use spambots to harvest email addresses from Web sites.

Document outlines the weaknesses of different existing approaches to catch malware – especially bots – and shows how Medium Interaction Honeypots solves these problems.

A platform independent low interaction client honeypot that allows identify rogue servers on the web.