Modular FileMaker maintains a list of modules that adhere to this style and have been designed to work together. Start your search here.
Modular FileMaker is a style of writing FileMaker applications that focuses on portability. Its a guideline for helping developers write code that is easier to share, test, and maintain.
Modular FileMaker doesn’t force you to adopt a massive framework or arcane naming convention. Just pick and choose the modules that provide the functionality that you need.