ZJX

ZJX Basic 1.0 · Linux x86-64 · released 2026-10-16

ZJX

Smaller archives. Every byte back.

ZJX packs logs, telemetry, and structured data into compact archives, then restores them exactly.

Download ZJX Basic for LinuxSee the specs

ZJX Basic 1.0 is available for Linux. Create ZJX, ZIP and tar.zst archives from the desktop or command line. Read the release story.

Conceptual visualization

Public benchmark

Less storage. Same data.

363.5 MB of real web-server access logs from the public http_logs-181998 corpus, archived by ZJX Basic 1.0.3 and 12 settings of xz, zstd, 7-Zip, brotli, gzip, bzip2 and lz4, then restored and checked.

  • Smallestarchive of all 15 settings measured
  • 18.6%smaller than xz -9e
  • 2.4×faster to compress than xz -9e (fast mode)
  • Exactevery restore matches the source, byte for byte

ZJX Basic 1.0.3, a free download, on a public corpus with a pinned SHA-256. Anyone can rerun it.

Reproduce it on GitHubEvery benchmark

Three modes

Pick size or speed.

Every mode writes the same format and restores the same bytes.

  1. When size matters

    Smallest

    Our smallest archives, built for long-term storage.

  2. When balance matters

    Fast

    Less creation time, still size-first. On the public benchmark it wrote the same smallest archive.

  3. When time matters

    Ultrafast

    Built for the shortest wall time. Gives up some size for speed.

For teams

Pay less to keep what you must.

Retained logs and telemetry in smaller archives that restore offline, with no account or license server. We measure your own data before you commit.

ZJX for business

Start smaller.

Basic is ready for Linux at ZJX.app. The separate ZJX 1.30.0 engine and scoped commercial evaluations remain available from Greyforge Labs.

Download ZJX Basic for LinuxGet the engine