Zs3
S3 server in ~1K lines of Zig, 250KB binary, zero dependencies
Details
- External ID
- 46421196
- Source
- HN
- Company
- —
- Product
- Zs3
- Website domain
- github.com
- Launched
- Dec. 29, 2025
- Cohort
- —
- Upvotes
- 42
- Upvotes percentile
- 0.7929389312977099
- Tags
- —
- Fetched at
- Sept. 7, 2026, 9:25 p.m.
- Updated at
- Sept. 7, 2026, 9:25 p.m.
Description
Most S3 usage is PUT, GET, DELETE, LIST with basic auth. This does exactly that.SigV4 auth, multipart uploads, range requests. Storage is just files on disk.No versioning, no ACLs, no encryption. Use MinIO or AWS if you need those.
Enrichment
- Theme
- file transfer and sharing tools
- Vertical
- Horizontal
- Function
- Data infrastructure
- Audience
- Developer
- AI stance
- Not AI
- Project type
- Hobby / open-source project
- Normalized one-liner
- s3 compatible server
- Manually corrected
- False
Could you build this?
No Implementing a zero-dependency S3-compatible HTTP server with AWS SigV4 authentication, XML payload parsing, and multipart chunking in Zig requires deep systems and low-level cryptographic protocol implementation.
What it would actually take: The stack involves Zig with manual memory management and low-level POSIX sockets/HTTP server handling. The core challenge is implementing cryptographic primitives (HMAC-SHA256, hex encoding) to correctly evaluate complex AWS Signature Version 4 authentication, alongside custom XML parsers for bucket responses and handling multipart streaming chunk uploads to disk without external libraries. It requires seasoned systems programmers experienced with manual memory allocation and strict wire protocols.
Discussion
1 comment analyzed.
Competitors mentioned: Minio
Competitors
Other products that read as similar to this one — 79 launches clear the similarity bar, closest 8 shown.
Attention rank: #15 of 80 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 47 days after the earliest competitor.
- ZeroFS · hn · 2026-06-11 · 11 upvotes · similarity 0.58
- ZeroFS · hn · 2026-07-02 · 128 upvotes · similarity 0.46
- Record Store · ph · 2026-09-29 · 2 upvotes · similarity 0.43
- Fractalbits · hn · 2025-11-25 · 6 upvotes · similarity 0.43
- Lightweight C++23 S3 client with no extra deps (just curl and OpenSSL) · hn · 2026-06-13 · 5 upvotes · similarity 0.41
- Lightweight, S3-compatible object storage server with built-in web dash · hn · 2026-03-01 · 7 upvotes · similarity 0.39
- S3 compatible store with 1M IOPS(4K-R,p99~5ms), BYOC in 5min with rust · hn · 2025-12-07 · 23 upvotes · similarity 0.39
- Minikv · hn · 2026-02-03 · 71 upvotes · similarity 0.39
Other launches for this product
- No other launches for this product.
Same idea, different domain
Nobody's really built a data infrastructure tool for Media & entertainment yet.