Table 1.

Software packages available for gene expression analysis, categorised by package format as either enterprise-wide, software for desktop use, or useful websites

Company	Software	URL
Enterprise-wide
GeneData	Expressionist	www.genedata.com
Informax	Genomax	www.informaxinc.com
LION Bioscience	ArrayScout	www.lionbioscience.com
NetGenics	Synergy	www.netgenics.com
Rosetta Inpharmatics	Rosetta resolver	www.rii.com
Desktop
Biodiscovery	Genesight	www.biodiscovery.com
Silicon Genetics	Genespring	www.sigenetics.com
Web based
Genome Biology	Bioarray software environment	Genomebiology.com/2002/3
AMADA	Analysing microarray data	Web.hku.hk/xxia/software
Albert Einstein College of Medicine	GNU and GPL scatterplots	biotech.aecon.yu.edu
Ontario Cancer Institute	Microarray database	www.uhnres.utoronto.ca/microarray
European Bioinformatics Institute	ArrayExpress	www.ebi.ac.uk/arrayexpress
National Center Biotechnology Information NIH	Gene expression omnibus (GEO)	ncbi.nlm.nih.gov/geo
Microarray Gene Expression Data Society	MGED	www.mged.org
MIT Department of Biology	Microarray scanning	Web.mit.edu/biology/AbCam
Spotfire	Array explorer	www.spotfire.com

A growing appreciation of the microarray results has led to the creation of public repositories for microarray data. More information on microarray databases is given in reference 13.