Independent information banks produces different mindset and values within the respective divisions causing misunderstanding, incoherence, and incompatibility in group communication, which results in unsound decisions that are not mutually beneficial to the group. A feasibility study was done and has shown the requirements to implement a system called Project Information System (PIS). It is designed for Putrajaya Holdings Sdn Bhd (PJH), a mega project developer for Putrajaya City (the Administrative Center for the Government of Malaysia) to facilitate an effectual management of an organization by providing centralized access from a single source to the required information. The objective of the project is to give direct benefit for the company such as fast retrieval of information, enhances decision-making and tactical planning whilst avoiding confusion and/or ambiguous situation where misinterpretation could be costly both in terms of monetary and time factors. With currently available and more innovative technology, the organization uses IS/IT to realign its business activities to achieve performance breakthrough. In this way, organization and its environment, workers and external third parties who involve in PJH projects, stand to benefit by having real time and online reference to project information at their fingertips. PIS, a client/server and web-based system, is implemented using open source solutions that are MySQL as the database, and PHP as the programming language. Waterfall approach was chosen for the system implementation. The PIS system consists of five modules and was developed in phases. Therefore, PIS is a necessity as a tool to provide a competitive edge to Putrajaya Holdings in controlling its projects, and improve communications within the group and its environment (contractor and consultant)