ABSTRACT Along with the increasing use of Enterprise Resource Planning software, and begin to popular open source movement, open source ERP has become a new alternative control system resources in an organization. It has been widely available open source ERP software, with different features as well, so it is sometimes difficult to choose which is suitable to the needs of the user. This paper discusses about the features and functionality of ERP software popular open source use. In it also discussed the comparison between their respective open source ERP software. This paper is expected to provide an overview of the development of open source ERP software, and be able to separate the value and shortcomings of each of the software that will be discussed. ERP software that will be compared in this paper is OpenERP. This software is assumed to represent the software open source ERP. Key Words: ERP, Open Source, OpenERP. 1. INTRODUCTION Enterprise Resource Planning, will henceforth abbreviated as ERP, has now become a very important part in the industry and the corporate world. Automation and integration of all functions involved in the process of forming business ERP as an information system capable of facilitating the flow of information between all business functions within the organization, as well as manage relationships with stakeholders. ERP software first appeared on the market as a commercial and proprietary software, because it was so far vendors such as SAP, PeopleSoft and Oracle still dominates the market of ERP software. However, the dominance of commercial software start deterred from open source software movement became popular. Open source ERP software was developed with the aim of minimizing errors and bugs in the system, because everyone can evaluate it. Besides the functionality and compatibility of software development can be faster because everyone is free to develop software. In this paper, we…