NeoJSON

The NeoJSON framework contains a reader (NeoJSONReader) and a writer (NeoJSONWriter) to parse respectively generate JSON to or from Smalltalk objects. The goals of this project are:

to be standalone (have no dependencies and have little requirements)
to be small, elegant and understandable
to be efficient (both in time and space)
to be flexible and non-intrusive

Compared to other Smalltalk JSON frameworks, NeoJSON has

less dependencies and little requirements
can be more efficient (be faster and use less memory)
allows for the use of schemas and mappings

MIT