I am happy to introduce a new database that contains the essential genome composition information from 1118 eukaryotic genomes that includes GC content, GC1, GC2, GC3 and GC4d (GC content at four-fold degenerate sites).
The relevant reference:
GCevobase: an evolution-based database for GC content in eukaryotic genomes, Dapeng Wang, Bioinformatics, bty068, https://doi.org/10.1093/bioinformatics/bty068
The database address:
Welcome to enjoy it.