This work focuses on the different technologies available to support teaching and learning in e-Learning systems whose importance for education teachers and system developers is evident. It is necessary to determine the most appropriate e-learning technologies to support the personal requirements in teaching, which make it possible to provide the best learning opportunities for students, considering the current situation in which educational systems have immediate demands derived from the Covid 19 pandemic, which makes classroom-based educational practices give way to remote activities. There are currently trends in the development of a variety of available technologies which may be framed in Web environments and Virtual Reality among other emerging technologies; therefore, the decision to use a particular technology must be based on solid research and clear evidence. This article reviews many of these e-Learning system technologies and provides information, about their use, opportunities and trends in development.