Lightweight C++23 S3 client with no extra deps (just curl and OpenSSL)
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Attached is my attempt at making a small toy S3 client without any other dependency besides libcurl and OpenSSL. Was tested mainly on MinIO (RIP) locally, so I would expect some bugs when using it against AWS, although I was able to play with it on some open access bucketsBe aware that I am not a C++ programmer and this project was indeed done to learn a bit of C++ myself :')Feedback on any of the code, either on gtest, or the benchmarking section or the core itself is welcome!
HN · launched Jun 13, 2026 · 5 upvotes (top 87%) · 0 views
Niche: network and communication protocol libraries · 70 launches, 5 in the last 7 days · Explore this niche →
Category and tags
- Horizontal
- Dev tools
- Developer
- Not AI
- Hobby / open-source project
Visit website ↗ Source listing ↗
More like this: all 70 launches in network and communication protocol libraries →
Could you build this?
Yes A minimal S3 client in modern C++ only needs to construct HTTP requests, calculate AWS SigV4 hashes with OpenSSL, and execute calls using libcurl.
Discussion
5 comments analyzed.
Competitors mentioned: Go (for asynchronous performance)
Concerns raised: Binary size bloat from curl and OpenSSL dependencies (2-3mb), Synchronous architecture limits performance
Feature requests: Asynchronous/coroutine-based data fetching, C++26 reflection for XML FSM parser
Competitors
Other products that read as similar to this one : 564 launches clear the similarity bar, closest 8 shown.
Attention rank: #484 of 565 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 226 days after the earliest competitor.
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- shellwing · github · 2026-10-18 · 36 upvotes · similarity 0.48
- geektls · github · 2026-09-24 · 10 upvotes · similarity 0.47
- Capo-S3 · hn · 2026-10-29 · 17 upvotes · similarity 0.47
- Minikv · hn · 2026-02-03 · 71 upvotes · similarity 0.47
- Fast and lightweight hash implementations (xdigest) · hn · 2026-02-19 · 5 upvotes · similarity 0.46
- Chuchu, an Android SSH client built on libghostty · hn · 2026-05-09 · 13 upvotes · similarity 0.45
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