Qwikslides is a free, no sign-in, web based presentation tool. It is part of the classtools.net toolset. Classtoosl.net offers various software tools that are free to use, and that do not require sign-up. Products created using classtools.net tools can be saved and embedded on websites and blog. The no sign-up feature is a solution for teachers who teach younger students who may not have email addresses. Classtools.net is worth checking out.
Qwikslides is a tool to create presentations using text, images, and video Text font and color can be manipulated. It is a simple and easy way to get students thinking about media and visual literacy.
Here is a tutorial on how to use it.