| package | description | category | license |
|---|---|---|---|
| clibs/unlikely | gcc branch prediction macros | Utilities | MIT |
| alebcay/metric | Macros for converting between metric and customary units | Utilities | Public Domain |
| troydhanson/uthash | C macros for hash tables and more | Data structure | Unlicensed |
| madmurphy/zen.h | C preprocessor utilities | Preprocessor macros | GPL-3.0 |