Wikipedia has a nice table with amino acids. I was using it for a long time.
Along with DNA codon table. Also, available at
Wikipedia.
Recently I've read a paper by Jian-Jun Shu (
Shu, Jian-Jun. "A new integrated symmetrical table for genetic codes." Biosystems 151 (2017): 21-26.). It contains a pretty table with symmetrical layout.
I decided to combine all three of the above-mentioned ones into one. My version is below.