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Top 5 C Data Visualization Projects
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> Like… has anyone done a Jepsen-like stress test on rsyslogd and shared the results? I’ve half-assedly looked before and not been able to find anything.
I've not used rsyslogd specifically, but I don't see how you'd have any issues with the log volume you described.
[1] https://github.com/netdata/netdata/tree/master/src/crates/ne...
[2] https://learn.netdata.cloud/docs/logs/systemd-journal-logs/s...
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> Such software will always exist, it just moved to some niche or became a lower level "backbone" of other higher level software.
Yes. I’ve been working for years on building a GPU-based scientific visualization library entirely in C, [1] carefully minimizing heap allocations, optimizing tight loops and data structures, shaving off bytes of memory and microseconds of runtime wherever possible. Meanwhile, everyone else seems content with Electron-style bloat weighing hundreds of megabytes, with multi-second lags and 5-FPS interfaces. Sometimes I wonder if I’m just a relic from another era. But comments like this remind me that I’m simply working in a niche where these optimizations still matter.
[1] https://datoviz.org/
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ruby-libgd
Native Ruby bindings for the GD graphics library, providing fast image processing, drawing, filters, and alpha-blending without external dependencies.
Project mention: Show HN: Plotting mathematical functions in Ruby inside Jupyter with Ruby-libgd | news.ycombinator.com | 2026-03-13
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
C Data Visualization discussion
C Data Visualization related posts
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Some software bloat is OK
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Datoviz: High-Performance GPU Scientific Visualization Library with Vulkan
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Antirez/load81: SDL based Lua programming environment for kids similar to Codea
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Show HN: Datoviz 0.2.0, Vulkan-based GPU scientific visualization (C/C++/Python)
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What is the Demoscene? An obscure but influential art form
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Simplest graphics programming language/framework
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Small script to draw graphs
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Index
What are some of the best open-source Data Visualization projects in C? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | Netdata | 79,077 |
| 2 | php-spx | 2,604 |
| 3 | datoviz | 786 |
| 4 | GR | 340 |
| 5 | ruby-libgd | 101 |
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