A development platform system is disclosed that provides a development platform configured to create new and modified web-based applications. The development platform may be configured to search for and select a design layout template from available design layout templates stored on a database library. The development platform may further be configured to search for and select a data visualization template from available data visualization templates stored on a database library. The development platform may further be configured to generate a data visualization modification interface and accept a client device customization input to modify attributes of a data visualization. Templates that are modified by the development platform may be stored for subsequent look-up on a database library according to metadata describing attributes of the templates.