ZJX is the world's newest compression standard. We beat all other compression standards in a variety of speed and size categories. by @GreyforgeLabs
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Joined September 2026
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ZJX Basic 1.0 is here for Linux.
Create ZJX, ZIP and tar.zst archives from your file manager or the command line. Browse common archive formats and preview individual files.
Free for personal use and eligible organizations.
zjx.app/download
ZJX 1.30.0 against 1.29.7, on five public corpora: every compact and fast archive came out smaller and packed faster, and fast and ultrafast archives restore faster.
The numbers for each mode are below.
ultrafast writes the same archives as 1.29.7 and restores them 1.42x to 2.10x faster on every corpus.
The archive format is unchanged from 1.29: 1.29.7 restored every archive 1.30.0 wrote in these runs.
Medians, with the two versions alternating on every repetition and every restore checked against the content digest.
Full tables: zjx.greyforge.tech/benchmark…
Request the package: zjx.greyforge.tech/get.html#…
ZJX - the new standard. retweeted
Sley runs in your browser now.
Write typed Python and the released Sley 2.1.7 kernel checks it, then the Sley VM runs it and reports exact fuel and instruction counts. Nothing to install.
sleylang.org/playground
ZJX - the new standard. retweeted
On the silesia corpus, ZJX compact used to take 223 seconds. 1.30 takes 107, and the archive comes out 8.7% smaller.
ZJX 1.30.0 is out.
Go source code, fast mode: an archive 25.7% smaller, packed 2.1x faster and restored 2x faster than on 1.29.7.
compact packs 2.1x to 4.1x faster on our five public test corpora, up to 8.7% smaller.
Same archive format as 1.29.
zjx.greyforge.tech/releases.…
ZJX 1.30.0 is out.
Go source code, fast mode: an archive 25.7% smaller, packed 2.1x faster and restored 2x faster than on 1.29.7.
compact packs 2.1x to 4.1x faster on our five public test corpora, up to 8.7% smaller.
Same archive format as 1.29.
zjx.greyforge.tech/releases.…
ZJX - the new standard. retweeted
We made our software faster and smaller this month. One tool per post below, with the numbers.
ZJX - the new standard. retweeted
ZJX Basic 1.0.3 packs 363.5 MB of public web-server logs into 12.2 MB, the smallest archive of 15 settings tested: 18.6% smaller than xz -9e, and 2.38x faster to compress.
Free at zjx.app
Proof: github.com/GreyforgeLabs/zjx…
ZJX - the new standard. retweeted
Android 17 with October's security patch now installs on Omarchy in one command. omawaydroid builds on Waydroid and WayDroid-ATV, and SuperTuxKart runs at 60 FPS, ARM build included.
IRONFLOOR measured about 1.74 times faster verified archive creation overall than ZJX 1.29.0 on the qualification host. The archives stayed byte-identical.
A look back through the 1.29 releases: greyforge.tech/chronicles/zj…
ZJX - the new standard. retweeted
Your AI agent's new favorite language just got cheaper. 💸
Sley 2.1.4: the agent write→test→fix loop costs ~3x fewer tokens than 2.1.3, and beats Python by 27% on typo fixes.
Plus loops up to 2x faster. Same reproducible build.
👇
github.com/sley-lang/sley/re…
Choose compact for the smallest archive, fast for a shorter packing schedule, or ultrafast for a single Zstandard level-1 attempt per input unit. ZJX keeps exact restoration across all three objectives.
greyforge.tech/chronicles/zj…
ZJX - the new standard. retweeted
CodePet 0.6: the desktop pet is now a native Rust program.
About 4 MB of memory where the 0.5 pet used up to 168 MB, with 0.08% of a core and 5 wakeups a second while it roams.
Also new: a HIDE button (Super+Alt+P brings it back) and clearer care icons.
github.com/GreyforgeLabs/cod…