json-query
Retrieves values from JSON objects for data binding. Offers params, nested queries, deep queries, custom reduce/filter functions and simple boolean logic. Browserify compatible.
mergician
Uniquely flexible and light-weight utility for cloning and deep (recursive) merging of JavaScript objects. Supports descriptor values, accessor functions, and custom prototypes. Provides advanced options for customizing the clone/merge process.
deep-filter
Recursively filters collection values (arrays and objects)
lodash-deeper
some lodash mixins for deep operations on plain objects