The ultimate JavaScript string library

• UpdatedAug 1, 2023
• JavaScript

Tiny, fast, non-dependent and fully loaded printf implementation for embedded systems. Extensive test suite passing.

• UpdatedApr 3, 2023
• C

sprintf.js is a complete open source JavaScript sprintf implementation

• UpdatedApr 5, 2024
• JavaScript

Tiny, fast(ish), self-contained, fully loaded printf, sprinf etc. implementation; particularly useful in embedded systems.

• UpdatedOct 11, 2025
• C

Lightweight printf library optimized for embedded systems

• UpdatedSep 20, 2025
• C

📜 sprintf for JS

• UpdatedApr 27, 2022
• JavaScript

Dart implementation of sprintf

• UpdatedOct 31, 2022
• Dart

🎨 colourful sprintf

• UpdatedMay 6, 2017
• JavaScript

It is an alternative implementation of the printf family suitable for embedded systems.

• UpdatedApr 4, 2021
• C

🪶 A simple string.h implementation and sprintf & sscanf working with all flags & specifiers. (School 42)

• UpdatedJul 22, 2022
• C

A wrapper library for PHP to format and internationalize values in messages like sprintf

• UpdatedSep 28, 2025
• PHP

Minimal quick & dirty libc, mainly meant for use in my WebAssembly modules

• UpdatedAug 31, 2025
• C

a clone of C s(n)printf in Rust

• UpdatedOct 7, 2025
• Rust

tiny (<1 kB) sprintf() for embedded platforms

• UpdatedSep 21, 2025
• C

Implementation of sprintf, printf and fprintf in Forth 2012

• UpdatedDec 15, 2021
• Forth

Insert supplied variable values into a format string.

• UpdatedAug 12, 2025
• JavaScript

🧵🖥 Implementation of the string.h library with additions.

• UpdatedFeb 5, 2023
• C

C-style printf formatting for JavaScript with padding and precision.

• UpdatedSep 11, 2025
• JavaScript

Support for working with float in STM32 in conjunction with FreeRTOS

• UpdatedSep 5, 2020
• C

Formatting and printing string utilities

• UpdatedApr 11, 2024
• TypeScript