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Top 14 C CSV Projects
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StringZilla
Up to 100x faster strings for C, C++, CUDA, Python, Rust, Swift, JS, & Go, leveraging NEON, AVX2, AVX-512, SVE, GPGPU, & SWAR to accelerate search, hashing, sorting, edit distances, sketches, and memory ops 🦖
Usearch (Smaller & Faster Single-File Similarity Search & Clustering Engine for Vectors & 🔜 Texts): https://github.com/unum-cloud/usearch
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csvquote
Enables common unix utilities like cut, awk, wc, head to work correctly with csv data containing delimiters and newlines
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I wrapped zsv, a SIMD-accelerated CSV parser written in C, into a Ruby gem. SIMD means it uses special CPU instructions to process multiple bytes at once - the same tech that makes video encoding and game physics fast.
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ExternData
:page_facing_up: Modelica library for data I/O of CSV, INI, JSON, MATLAB MAT, SSV, TIR, Excel XLS/XLSX and XML files
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csv-converter
The CSV TO CSV CONVERTER will change the current separator of your .csv files to any other character you desire, without corrupting data inside of "", and with only one simple terminal command!
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Project mention: Show HN: Xcuts – A package manager, shell, and more, made in iOS shortcuts | news.ycombinator.com | 2025-10-25
- a program that lets you display html and create callbacks to the shortcuts app that can make changes to the html displayed (UICuts).
This is all written in shortcuts, so that means you don't have to install any apps. In additon, it's offline and you don't have to connect to anything.
I recorded some demo videos: [https://www.icloud.com/sharedalbum/#B2d5oqs3q2kl8t2]. One of the videos showcases something I ported to Xcuts, called csvf (https://github.com/matthew-james-brewer/csvf). It's written in javascript + shell script.
I've been working on this for a while. What do you think of it?
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Project mention: An overengineered solution to `sort – uniq -C` with 25x throughput (hist) | news.ycombinator.com | 2025-10-22
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 CSV discussion
C CSV related posts
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grab VS coreutils - a user suggested alternative
2 projects | 11 Mar 2026 -
Ruby CSV Parsing 5-6x Faster
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Show HN: ZSV – A fast, SIMD-based CSV parser and CLI toolkit
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StringZilla 4.2: Arm NEON+SHA and Goldmont support
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Counting Words at SIMD Speed
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Csvquote – smart and simple CSV processing on the command line
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Data Science at the Command Line, 2nd Edition (2021)
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A note from our sponsor - SaaSHub
www.saashub.com | 19 Jul 2026
Index
What are some of the best open-source CSV projects in C? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | StringZilla | 3,515 |
| 2 | csvquote | 453 |
| 3 | zsv | 394 |
| 4 | ExternData | 82 |
| 5 | Python-IMU-Data-Sampling-App | 79 |
| 6 | csv-nix-tools | 32 |
| 7 | pg_csv | 30 |
| 8 | zsv-ruby | 17 |
| 9 | tree-sitter-csv | 12 |
| 10 | Erlang NIF CSV parser and writer | 10 |
| 11 | csv-converter | 5 |
| 12 | mkmcsv | 3 |
| 13 | csvf | 2 |
| 14 | mll | 1 |
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