This document provides a summary and comparison of various quantity surveying software applications, including Autodesk Navisworks, CostX, Glodon, and Buildsoft. It discusses the key functions and limitations of each software. Additionally, it compares the benefits and constraints of using Building Information Modeling (BIM), CAD measurement, and manual measurement at different stages of construction projects. The stages discussed are the preparation/briefing stage, design stage, pre-construction stage, construction stage, and post-construction stage. Overall, the document provides an overview of different quantity surveying software and how the measurement approach may vary depending on the project stage.