Ujson
lastmod 2026-11-10created 2021-03-123 edits
ujson (UltraJSON) is a fast JSON encoder and decoder for Python written in C. It provides dumps and loads interfaces nearly identical to the standard library json module and is notable for its speed, though some options and detailed behaviors differ. This page collects a list of Python JSON libraries, including ujson along with orjson, rapidjson, simplejson, and others.