| troydhanson/uthash | C macros for hash tables and more | Data structure | Unlicensed |
| willemt/bitfield | easily get and set bits in a bitfield | Data structure | BSD |
| rxi/vec | dynamic array | Data structure | MIT |
| willemt/farraylist | An arraylist that doesn't shift items so you can have "holes" between slots | Data structure | BSD |
| ajaymt/list.c | Simple linked list | Data structure | MIT |
| gioyik/mapc | C lib for mapping | Data structure | MIT |
| htmk/fat-array | Dynamic arbitrary typed array using fat pointers and macros. | Data structure | MIT |
| robusgauli/cvector | A Generic dynamic vector implementation with Iterator addon. | Data structure | MIT |
