fmtlib/fmt

A modern formatting library

Developer toolsC++#formatting#printf#output#chrono#performance

1.0 Steady Magnitude out of 10 — how fast interest is growing, not a quality score. Star growth looks organic. Data as of September 29, 2026, 12:30 UTC.

Open on Seismograph Open on GitHub

About the project

A C++ formatting library providing a fast and safe alternative to stdio and iostreams, implementing C++20 std::format and C++23 std::print. Used for printing strings, numbers, dates and containers with compile-time format checking.

Useful for

Replace printf and iostreams with type-safe output in a C++ project
Format dates and times via std::chrono in application logs
Check format strings for errors at compile time in C++20

README summarized by DeepSeek V4.1 Flash. Details may be inaccurate.

Why it’s trending

4 stars so far today, about 7 expected by the end of the day.
GitHub Trending this month: #10, +2,108 stars.

Stars per day

Bars are daily stars, the line is the usual pace. Red marks spike days.

Numbers

Total stars: 25,821
Today: 4 · ≈ 7 by evening
Forks: 3,071
Issues and pull requests: 4,939
Watchers: 326
Language: C++
License: MIT
Latest release: 12.2.0 · June 16, 2026
Created: December 7, 2012
Last push: September 27, 2026

Star trust

Growth looks organic: forks and discussion are in line with active projects, and stars arrive unevenly, the way people give them.

These are heuristics, not a verdict: we judge by the repository’s behavior, not by a list of stargazers.

Spotted in

September 29, 2026GitHub Trending this month: #10, +2,108 stars

README badge

Paste it into your README — the badge shows the current magnitude and links to this page.

[![Seismograph](https://gitnova.dev/badge/fmtlib/fmt.svg?lang=en)](https://gitnova.dev/en/r/fmtlib/fmt)

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