ARCHS4, developed by the Ma’ayan Lab, contains over 1 million samples of uniformly processed RNA-seq data from the Gene Expression Omnibus (GEO). The samples were aligned using kallisto with an efficient parallelized cloud workflow. website | citation

GTEx transcriptomics provides bulk RNA-seq data for 54 human tissues collected from postmortem donors. The GTEx database was designed to study the relationship between genetic variation and gene expression across multiple human tissues. website | citation

Tabula Sapiens is a gene expression atlas created from single cell RNA-seq data collected from multiple tissues of 16 postmortem donors. The processed data contains average expression of each human gene in 486 cell types. website | citation