Lightweight JSON parser
    - http://zserge.com/jsmn.html
    - https://github.com/zserge/jsmn/

Lightweight HTTP parser
    - https://nodejs.org/
    - https://github.com/nodejs/http-parser/

sort_r (portable quicksort with closure)
    - https://github.com/noporpoise/sort_r

hash (portable performant hash function)
    - http://burlteburtle.net/bob/hash/evahash.html

sha1, crc16, dict, sds (hash and string helpers)
    - https://github.com/antirez/redis/blob/4.0/src
