BankersBox is a JavaScript library that injects Redis-like steroids into client-side storage using localStorage as the default persistent data-store. It provides a pluggable storage adapter system, allowing other means of persisting data stored in BankersBox. The library offers various operations like set, get, incr, lpush, rpush, sadd, sismember, scard, and more, enabling developers to store and retrieve any native data type with localStorage. With its active development and extensive unit tests, BankersBox is suitable for rapid prototyping of rich client-server applications, creation of one-page JavaScript applications, mobile HTML5-powered apps, and other use cases.