jslibs is a standalone JavaScript development environment for using JavaScript as a general-purpose scripting language. jslibs provides a set of native modules that contains various general-purpose classes and functions. Some of these modules are simple wrappers to familiar libraries such as zlib, SQLite, FastCGI, and NSPR. Other modules provide tools to enhance JavaScript programming. The jslibs distribution comes with a small standalone command-line access program (jshost) that can be used to run JavaScript files.