A block-style editor with clean JSON output
Web-based tool to view, edit, format, repair, query, & transform JSON
SQL databases in Python, designed for simplicity, compatibility
C++ Qt ORM (Object Relational Mapping) and ODM library
Tools to ease the creation of snippets, syntax definitions, etc.
A GUI program for interacting with and manipulating JSON files
jless is a command-line JSON viewer designed for reading
JSON Stream Editor (command line utility)
Build forms from JSON Schema, easily template-able
CAM XML Editor for XML+JSON+Hibernate+SQL Open-XDX sponsored by Oracle
GUI app for editing, visualizing, and manipulating JSON data