TinyCsvParser/TinyCsvParser

Library to help reading and writing CSV files

World's Fastest .NET CSV Parser. Modern, minimal, fast, zero allocation, reading and writing of separated values (`csv`, `tsv` etc.). Cross-platform, trimmable and AOT/NativeAOT compatible with blazing fast SIMD vectorized parsing.

Fast CSV parser

Full featured CSV parser with simple api and tested against large datasets.

A modern C++ CSV parser and serializer that doesn't make you choose between ease of use or performance.

Fast CSV parser and writer for Modern C++

A faster CSV parser in 5KB (min)

Lightweight and fast library written in C# for reading Microsoft Excel files

Fastest end-to-end CSV ingestion for Ruby (with C acceleration). SmarterCSV auto-detects formats, applies smart defaults, and returns Rails-ready hashes for seamless use with ActiveRecord, Sidekiq, parallel jobs, and S3 pipelines — even for messy user-uploaded real-world data.