Collection of classes to abstract files systems. Many interfaces provide files, but not called as file systems and treated differently. For example server-side gives access to local files and browser-side HTTP/HTTPS protocol gives access to files as well,
Collection of general purpose tools for solving problems. Fundamentally extend the language without spoiling, so may be used solely or in conjunction with another module of such kind.
Advanced synchronization mechanism. Asynchronous routines may use Consequence to wrap postponed result, what allows classify callback for such routines as output, not input, what improves analyzability of a program. Consequence may be used to make a queue
Relations module. Collection of cross-platform routines to define classes and relations between them. Proto leverages multiple inheritances, mixins, accessors, fields groups defining, introspection and more. Use it as a skeleton of the application.