Directory of Academic Search Engines

HotFreeSite
Collection of free services and free products. (English).
Free Bee
Free stuff for your Business Free software, telephone calls, 0800/0870 numbers, legal forms,business advice and much much more. (English).
Freemachine
Freemachine the UK FREE Site listing only current free offers. All categorized and regularly updated. (English).
Prospector
Searchable directory of free stuff. Nice layout (English).
PROSPECTOR
Free stuff search engine.