The recent COVID-19 pandemic has disturbed education and raised the need to distance learning. Besides, as a part of a national program to achieve research and development objectives, a web-based Nuclear Research Reactor Educational Simulator (NuRRES) development program is launched. LabVIEW software package from National Instrument is exploited to implement the complex reactor's mathematical models and utilized for building an interactive GUI (graphical user interface). To provide the necessities of training, a dynamic animation is used to enrich the learning and awareness of a trainee about real problems. An authorized web-based network will be established between different nuclear educational institutes. This online learning tool facilitates sharing experiences and reactor experiments in learning nuclear science. Studying and imitating core physics and its applications and modeling and analysis of reactor thermal-hydraulics are also offered. Besides, NuRRES can be utilized to study different accidents (such as loss of coolant and flow accidents) and analyze their effects. Using simulators can ensure safe operators' training for various situations. Therefore, one of the contributions of NuRRES project is to deliver its analysis results to serve several safety-relevant activities. NuRRES have wide capacities of training tools that could be utilized to conduct a variety of training courses to guarantee a complete understanding of the nuclear physic principles and safe reactor operation and in turn, trainees will earn a massive benefit. It is anticipated that NuRRES will demonstrate its effectiveness in raising the skills of the human resources required by the nuclear industry and nuclear initiatives.