- C FAQ - Answers to the frequently asked questions from the Usenet newsgroup comp.lang.c
C Language and library references
- JTC1/SC22/WG14 - the C Standards Committee, includes draft C language standards, proposals, and defect reports
- comp.std.c - Discussion about C language standards.
- GNU C Manual - C core language reference as implemented by the GNU C compiler.
- System V ABI for x86-64, Intel386, and IA MCU architectures
- Windows x64 ABI
- PowerPC EABI for 32-bit embedded processors
- PowerOpen ABI for older PowerPC platforms
- ARM ABI for ARM architecture
- POSIX.1-2008 - The operating system API of the Unix-compatible systems
- Linux man pages - the Linux OS API documentation
- Standard library implementations