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Top 4 C++ Printf Projects
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With fwrite that would be another level of buffering in addition to FILE's buffer. If you are interested in what {fmt} is doing, a good starting point is https://github.com/fmtlib/fmt/blob/35dcc58263d6b55419a5932bd.... It is also possible to bypass stdio completely and get even faster output (https://vitaut.net/posts/2020/optimal-file-buffer-size/) and while it is great for files, it may introduce interleaving problems with things like stdout.
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NanoLog
Nanolog is an extremely performant nanosecond scale logging system for C++ that exposes a simple printf-like API.
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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++ Printf discussion
C++ Printf related posts
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Fmtlib / fmt A modern formatting library
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Use this Modern scanf for C++
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How is my Browser blocking RWX execution?
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Move semantics in Rust, C++, and Hylo
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Nanolog supports logging with 7 ns median latency
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Fmt: A Modern and Lightweight C++ Formatting Library
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A Modern Formatting Library
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A note from our sponsor - InfluxDB
www.influxdata.com | 1 Sep 2025
Index
What are some of the best open-source Printf projects in C++? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | {fmt} | 22,279 |
| 2 | NanoLog | 3,250 |
| 3 | nanoprintf | 752 |
| 4 | tinyformat | 548 |
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