This document discusses green building rating tools and provides information on five main tools: Green Building Index (GBI), GREENSHIP, BCA Green Mark, GreenRE, and Green Star. It outlines the history and development of each tool, including what organizations developed them and what countries are using them. Key criteria and categories of certification for each tool are also summarized in tables. The assessment process and types of organizations involved are described for each tool. In conclusion, the document states that GBI and BCA Green Mark are two tools that would be good fits for Malaysia, providing reasons why.