- Bionic - Google’s C Library for Android
- glibc - GNU C Library
- libc - BSD C Library
- musl libc
- dietlibc
- uClibc
- Newlib
- picolibc
- klibc
Features
- Data types
- Character classification
- Strings
- Mathematics
- File input/output
- Date/time
- Localization
- Memory allocation
- Process control
- Signals
- Alternative tokens
Miscellaneous headers
- <assert.h>
- <errno.h>
- <setjmp.h>
- <stdarg.h>
- POSIX Threads
- Multithreading
- Networking
- Regular Expressions