In the twenty-first century significant changes are occurring related to new scientific discoveries, digitalization, globalization, the development of astronautics, robotics, and artificial intelligence and machine learning. This century is called the age of digital technologies and knowledge. Till the Corono virus pandemic situation most of the educational institutions adapted the traditional classroom lectures. The academic institutions that were unwilling to change their traditional teaching learning methods were forced to shift to the new paradigm of online teaching and learning methods during the crisis. This paper focuses on the various online teaching learning tools available and how it can be used effectively.
