Lzop is a compressor similar to gzip. Its main advantages over gzip are much higher compression and decompression speed. lzop was designed with the following goals in mind: 1) reliability 2) speed (both compression and decompression) 3) reasonable drop-in compatibility with gzip 4) portability
Middling compression ratio, but compression speed is often real-time. This makes lzo great for shuffling around gobs of data, for when compression status is unknown, for data known to compress easily and well, etc.