zstd v1.4 - Facebook developed realtime compression algorithm here. For –format=lz4 using lz4 v1.9.0
brotli v1.0 - Google developed Brotli compression algorithm
gzip v1.5
bzip2 v1.06
pigz v2.4 - multi-threaded version of gzip
pbzip2 v1.1 – multi-threaded version of bzip2
lbzip2 v2.5– multi-threaded version of bzip2
lzip v1.21 – based on LZMA compression algorithm
plzip v1.8 – multi-threaded version of lzip
xz v5.2
pxz v5.2 - multi-threaded version of xz