1. A system comprising: a memory storing processor-executable program code; and a processor to execute the processor-executable program code in order to cause the first computing system to: receive a request from a client for application code to execute in a first Web page; determine that the application code is associated with a first UI framework; change one or more Uniform Resource Locators of the application code to reference a portal server; rewrite, via an Application/UI framework loader, any Uniform Resource Locators of the application code which indicate a location of the first UI framework to reference a first memory location storing a plurality of UI framework files in the portal server; transmit the changed application code to the client; transmit to the client a script to direct calls associated with the first UI framework to the portal server; receive a request from the client for second application code to execute in the first Web page; determine that the second application code is associated with the first UI framework; change one or more Uniform Resource Locators of the second application code to reference the portal server; and transmit the changed second application code to the client; receive a request from the client for third application code to execute in the first Web page; determine that the third application code is associated with a second UI framework; change one or more Uniform Resource Locators of the third application code to reference the portal server; change one or more Uniform Resource Locators of the third application code which are associated with the second UI framework to reference a second memory location of the portal server, the second memory location storing a plurality of files of the second UI framework; transmit the changed third application code to the client; and transmit to the client a script to direct calls associated with the second UI framework to the portal server.