References
- WebFilter, http://ils.unc.edu/webfilter
- Webcatcher, http://plum.tuc.noao.ed/ebcatcher/web catcher.html
- Point subscription, http://www.pointcom.com
- Smark Marks, http://www.netscape.com/comprod/sma rtmarks.html
- NewsHound, http://www.sjmercury.com/hound.htm
- Farcast, http://www.farcast.com
- PointCast Network, http://www.pointcast.com
- NewsClip, http://www.clarinet.com/newsclip.html
- SIFT(Stanford Information Filtering Tool), http://sift.stanford.edu
- BargainFinder, http://bf.cstar.ac.com/bf
- http://www.shipbroker.net
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- http://www.oilpricewatch.com