ZXC
Asymmetric, +40% decode vs. LZ4 on ARM (C, BSD-3, Fuzzed)
Details
- External ID
- 46301631
- Source
- HN
- Company
- —
- Product
- ZXC
- Website domain
- github.com
- Launched
- Dec. 17, 2025
- Cohort
- —
- Upvotes
- 28
- Upvotes percentile
- 0.7185114503816794
- Tags
- —
- Fetched at
- Sept. 7, 2026, 9:25 p.m.
- Updated at
- Sept. 7, 2026, 9:25 p.m.
Enrichment
- Theme
- music creation and audio software
- Vertical
- Horizontal
- Function
- Dev tools
- Audience
- Developer
- AI stance
- Not AI
- Project type
- Hobby / open-source project
- Normalized one-liner
- compression codec faster than lz4
- Manually corrected
- False
Could you build this?
No Achieving decompression speeds 40% faster than LZ4 on ARM requires deep expertise in assembly, instruction-level microarchitecture, and compression theory.
What it would actually take: This library requires handwritten C and specialized ARM NEON assembly implementing an asymmetric dictionary or finite state entropy compression scheme. The hard parts are branch prediction optimization, manual loop unrolling, SIMD register utilization, and rigorous fuzzing against memory exploits. This demands world-class systems programmers with deep expertise in CPU cache pipelines and information theory.
Discussion
5 comments analyzed.
Competitors mentioned: LZ4 / LZ4HC, lzbench (compression benchmark suite)
Concerns raised: Terminology/marketing: claims of asymmetry not unique to ZXC, LZ4 already asymmetric, LZ4HC achieves better compression than ZXC
Competitors
Other products that read as similar to this one — 314 launches clear the similarity bar, closest 8 shown.
Attention rank: #88 of 315 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 46 days after the earliest competitor.
- zxdesk · github · 2026-09-16 · 73 upvotes · similarity 0.53
- misa77 · hn · 2026-07-15 · 164 upvotes · similarity 0.52
- re4 · github · 2026-09-15 · 128 upvotes · similarity 0.49
- Zero deps C++ ASR binary for Linux (0MB idle RAM, no daemons, Unix way) · hn · 2026-06-04 · 5 upvotes · similarity 0.48
- exl3xpu · github · 2026-09-22 · 10 upvotes · similarity 0.47
- Glyd · github · 2026-09-19 · 164 upvotes · similarity 0.46
- FZeroRecomp · github · 2026-09-11 · 19 upvotes · similarity 0.46
- PALPack · github · 2026-09-20 · 16 upvotes · similarity 0.45
Other launches for this product
- No other launches for this product.
Same idea, different domain
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