LZMA Alone

LZMA_Alone is a compressed file format that uses LZMA compression. It may be more commonly known as simply LZMA or .lzma format, but note that it is a file format, and not quite the same thing as the raw LZMA compressed data format.

LZMA_Alone is considered to be deprecated, in favor of XZ. Other LZMA-based alternatives include 7z and Lzip.

Format
LZMA_Alone files have a 13-byte header.

Identification
There is no signature, and no reliable way to identify LZMA_Alone files just by looking at the header. That said, it is common for them to start with bytes.

Specifications

 * XZ Utils source → doc/lzma-file-format.txt

Software

 * LZMA SDK
 * XZ Utils: xz (with appropriate options), lzma, unlzma, lzcat