Jodd! Lightweight, Java, zero dependencies, use what you like
JUL - The JavaScript UI Language
Parser generator, targetting C, C++, Python, JavaScript, JSON and XML
one server framework
jsoniter (json-iterator) is fast and flexible JSON parser
A Fortran interface to the YAJL library
Crow is very fast and easy to use C++ micro web framework
Another JSON extension for SAP ABAP
Very Compact Java Reader / Writer ( 12kb)
A fast JSON parser/generator for C++ with both SAX/DOM style API
An interpreter for the Lua language, written entirely in C#
Another C++ based JSON Library (/w Parser/Generator/Navigator)
C#Prolog -- A Prolog interpreter written in managed C#
An awesome Go concurrent Crawler(spider) framework
commandline syntax convertor for RDF
An utilities framework for Java 1.7.