ZStandard: https://github.com/facebook/zstd and http://facebook.github.io/zstd/ has been in use for a while now. v1.0 was recently released. Hadoop (https://issues.apache.org/jira/browse/HADOOP-13578) and others are adopting it.
We have done some initial trials and seen good results. Zstd seems to give great results => Gzip level Compression with Lz4 level CPU.