Methodology of modular applications development on the client side of saas and implementation of the modules.js framework
The paper describes the methodology of developing modular applications on the client side for systems «soft-ware as a service» (SAAS) and implementation of the modules.js framework. The paper presents the rationale for software modularization on the SaaS client side and unsolved problems in the existing technologies. A set of actions for software 
 modularization is considered in the section on methodology for developing modular applications on the client side of the 
 SaaS. The section on the software implementation methodology considers a set of modules.js framework subsystems and 
 their practical application in the methodology. Software implementation allows creating single page application with dyna m-ic loading and unloading of modules, dynamical redirecting requests to a scalable server-side and creating specific types of 
 modules for data visualization using data templates. This approach simplifies the development of complex SAAS applica-tions and improves code supportability.