This article presents recent developments in CGWorld - a web based workbench for distributed development of a knowledge base of conceptual graphs, stored on a central server. The initial version of CGWorld met many of the needs that motivated its creation. It had excellent browsing, searching and editing features for a KB of CGs. However the support of large data and distributed development was not fully satisfying because of the architecture limitations. Subsequently the architecture of CGWorld was changed according to the latest developments in the area of multi tier web applications. This paper describes several enhancements to this architecture and implementation of new features that increase the scalability, reliability and usability of the application.