Slippers is the virtual classroom application developed by O'Clock School, a training organization that delivers courses in virtual classrooms. Slippers aims to provide learners with a qualitative course environment in the context of fully distance and synchronous learning. In addition, it aims to comply with the WCAG and WAI-ARIA digital accessibility standards. The virtual classroom application allows a fully remote course to be conducted with the same level of interactivity as in a physical classroom. The main features of the application include screen sharing, automatic subtitling, instant messaging, polls, attendance tracking and more.