https://www.ncbi.nlm.nih.gov/geo/

• Platform (GPL) - Annotation the technology and the features

• Sample (GSM) - Submitter-supplied sample data

• Series (GSE) - A collection of biologically- and statistically- comparable samples processed using the same platform

• DataSets (GDS) - Data collections assembled by GEO staff.

https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GPL570

Platform details:

• Description
• Type
• Organism
• Manufacturer
• Related samples and series

https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSM543663

Sample details:

• Description
• Type
• Organism
• Source
• Related platforms and series

https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE21862

Series details:

• Biological sample summary
• Design summary
• Publication information
• Related platforms and samples

• Datasets: experiment-centric view and analysis
• Gene profiles: gene-centric view

https://www.ncbi.nlm.nih.gov/

https://www.ncbi.nlm.nih.gov/sites/GDSbrowser?acc=GDS987

https://www.ebi.ac.uk/arrayexpress/

… and more https://en.wikipedia.org/wiki/Microarray_databases, https://datamed.org/