Persevere is an open source persistent object mapping framework. Persevere allows programmers to access, traverse, and manipulate persisted objects graphs easily with standard JavaScript syntax and intuitive Persistent JavaScript (PJS) API. Persevere implements the PJS API and maps JavaScript objects to persistent storage objects remotely through REST JSON following the JSPON (JavaScript Persistent Object Notation) data interchange specification. Persevere accesses persisted object graphs provided through JSPON data sources which can represent various underlying sources such as database tables, XML files, web services, and object repositories, and such persisted graphs can even span domains. Persevere allows application code to be persisted and exist within these object graphs, to facilitate improved object oriented design and organization. Persevere can provide orthogonal persistence and lazy loading support with standard JavaScript property access and modification through JavaScript pre-processing, or it can provide these capabilities natively with JavaScript 1.7.