jsonify is a JavaScript library that provides Douglas Crockford's JSON implementation without modifying any globals, making it useful for environments where global JSON manipulation is undesirable. It exports `parse` and `stringify` methods that work similarly to the native JSON object but can be used independently, which is particularly helpful for browserify users or projects requiring strict control over global namespace. The library is designed for Node.js and browser environments, offering developers a reliable way to handle JSON operations without side effects on the global scope.