fastjson

Fastjson is a JSON processor (JSON parser + JSON generator) written in Java.

FAST (measured to be faster than any other Java parser and databinder, incudes jackson. )
Powerful (full data binding for common JDK classes as well as any Java Bean class, Collection, Map, Date or enum)
Zero-dependency (doest not rely on other packages beyond JDK)
Open Source (Apache License 2.0)

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freinando Posted 2013-01-02

Just what I needed, simple and powerful. Amazing job.
cniq527 Posted 2011-08-01

fastjson is a great open source json parser and json generator~~