The Deflate64™, also know as Enhanced Deflate,  compression algorithm is a variation of the Deflate algorithm that uses a 64K  sliding window rather than a 32K window in order to compress a sequence of bits.

Deflate64™ takes longer to compress data than Deflate, however it provides better compression. In comparison to BWT , Deflate64™ is slightly faster but does not compress as well. 

Deflate64™ is a trademark of PKWARE Inc.