This tool shows the differences of gene symbols over the months on a heatmap. HGNC archive tables have been flattened out to the files and have been committed to a git repo in a chronological order. The data repo can be found at github.
This tool maps aliases, and previous or withdrawn symbols to current approved HGNC symbols as well as check for any entries that are not gene symbols and fix capitalization. Ensembl and RefSeq annotation files sometimes use previous or alias symbols. This tool also cross checks against Ensembl and NCBI annotation files for different genome versions and shows which gene symbols used. This way an accurate gene set can be utilized to avoid false negatives in the variant discovery process. The source code is available on GitHub.