This library provides a C99 implementation of the Message Queuing Telemetry Transport (MQTT) publish-subscribe messaging protocol.

TCC, also referred to as "TinyCC", is a small and fast C compiler written in C. It supports ANSI C with GNU and extensions and most of the C99 standard.

Sparse is a semantic parser for C and is required for Linux development. It provides a compiler frontend capable of parsing most of ANSI C as well as many GCC extensions, and a collection of sample compiler backends, including a static analyzer also called sparse. Sparse provides a set of annotations designed to convey semantic information about types, such as what address space pointers point to, or what locks a function acquires or releases.

This library provides a C99 framework for constructing event-driven, asynchronous network application protocols.

The unifdef utility selectively processes conditional C preprocessor #if and #ifdef directives. It removes from a file both the directives and the additional text that they delimit, while otherwise leaving the file alone. It can be useful for avoiding distractions when studying code that uses #ifdef heavily for portability.

The aml library provides a portable event loop for C, with the following features:

1. file descriptor event handlers

2. timers and tickers

3. signal handlers

4. idle dispatch callbacks

5. thread pool support

PCC is a portable C compiler. The project goal is to write a C99 compiler while still keeping it small, simple, fast and understandable.

The purpose of libfixposix is to offer replacements for parts of POSIX whose behaviour is inconsistent across *NIX flavours.

tinydir is a header-only C wrapper for listing directory contents.

Liblognorm normalizes event data into well-defined name-value pairs and a set of tags describing the message.

This package provides a C99 preprocessor written in pure Python.

libfastjson is a fork from json-c aiming to provide: a small library with essential JSON handling functions, sufficiently good JSON support (not 100% standards compliant), and very fast processing.

This package provides a header-only unit testing library for C/C++.

Liblogging is an easy to use library for logging. It offers an enhanced replacement for the syslog() call, but retains its ease of use.

The libwuya library implements data structures such as dictionaries, skip lists, and memory pools.

StringZilla is a C/C++ header-only string library which relies on SIMD and SWAR. It implements string search, edit distances, sorting, lazy ranges, hashes and fingerprints.

simdutf is a C++ library providing Unicode routines (UTF8, UTF16, UTF32). These routines are optimized for many specific architectures using SIMD (Single Instruction, Multiple Data) instructions.

Kefir is an independent compiler for the C17/C23 programming language, developed by Jevgenij Protopopov. Kefir has been validated with a test suite of 80 software projects, among which are GNU core- and binutils, Curl, Nginx, OpenSSL, Perl, Postgresql, Tcl and many others. The compiler targets x86_64 architecture and System-V AMD64 ABI, supporting Linux, FreeBSD, NetBSD an OpenBSD.

This package is an attempt at bringing smart pointers like C++'s unique_ptr and shared_ptr to C through GCC's cleanup attribute.

This C library contains some essential string manipulation functions and more, like escaping special characters.

The PCL implements the low level functionality for coroutines.

This library provides a C99 client implementation of the Simple Storage Service (S3) protocol for object storage.

Calcurse is a text-based calendar and scheduling application. It helps keep track of events, appointments and everyday tasks. A configurable notification system reminds user of upcoming deadlines, and the curses based interface can be customized to suit user needs. All of the commands are documented within an online help system.

Libical is an implementation of the iCalendar protocols and protocol data units.