Developing Teacher Performance Appraisal Website of Early Childhood Education in IGABA Salatiga. The implementation of website in teacher performance appraisal (PKG) is carried out to increase objectivity, validity, reliability, efficiency and effectiveness of human resource management. The purpose of this study was to develop a website application for the performance appraisal of Early Childhood Education (PAUD) teachers at Aisyiyah Bustanul Athfal Teacher Association (IGABA) Salatiga. This study uses the Research and Development method with the Sugiyono's research and development model, which includes seven research steps, namely potentials and problems, data collection, product design, design validation, design revision, product testing, product revision. As for a product development model, it uses the System Development Life Cycle Waterfall Model. To collect the data, the researchers used interviews, document study, and questionnaires. The researchers employed qualitative descriptive analysis in analyzing the data, and data triangulation to check the validation of the data. The results of this research were in the form of a website-based PKG PAUD application. Based on the results of expert validation, the websitebased PKG PAUD application is feasible to use.