Some of Modera Foundation open-source packages that are also useful outside of platform context:
Client-side library complements ExtJs by adding functionality that you usually will need when you are developing huge applications with complex logic.
Provides tools that simplify building heavily data-driven applications.
Provides tools that simplify process translations tokens extraction from your files, dumping them to database, translating and finally dumping them back to physical files.
Low level utilities for managing languages.
Allows to track user actions from your code by providing Psr's LoggerInterface compatible logger.