What is or was the Étoilé Runtime?
The Étoilé Runtime is a research prototype that was originally intended to succeed the GNU runtime. After some time, it was determined that porting GNUstep to a completely new – and radically differently designed – runtime would be a massive undertaking, as would providing all of the related compiler support. It was also decided that two incompatible ABIs would not benefit anyone. The author of the Étoilé runtime is the maintainer of the GNUstep runtime and has back-ported most of the improvements from the Étoilé runtime to the GNUstep runtime.