Expression Profiler -- Web-based EBI tool for microarray data analysis
Database and data analysis tools at Microarrays.org
TIGR's TM4, a "free, open-source system for microarray data management and analysis"
BioArray Software Environment -- "Comprehensive free web-based database solution for the massive amounts of data generated by microarray analysis"
J-Express -- From the University of Bergen's Department of Informatics, a downloadable Java application for analysis of gene expression data; includes implementation of hierachical clustering, self-organized maps, and principal component analysis
Manchester Bioinformatics Microarray Group -- Developing a number of relational-database and visualization tools for microarrays
Eisen Lab software -- Software for microarray image analysis, cluster analysis, expression profiles, etc.
GeneX -- Collaborative Internet database and toolset for gene expression (NCGR)
Serial Analysis of Gene Expression -- CGAP/NCBI project based on popular tool for generating quantitative gene expression data
Gene expression analysis tool, based on pattern-matching algorithm Tieresias, from the IBM Bioinformatics & Pattern Discovery Group
Yeast Microarray Global Viewer -- Database containing information from yeast genome-wide expression data
GenePublisher -- Web tool for analysis of microarray data
MAExplorer -- for data mining gene expression patterns