ucore_pub the ucore os portal. ucore_lab (for students who learn OS course) https://github.com/chyyuu/ucore_lab ucore_plus (for OS geeks or hackers or guys with Superman/Master Rank) https://github.com/chyyuu/ucore_plus uclibc for ucore https://github.com/chyyuu/ucore_lib_uclibc bionic libc for ucore https://github.com/chyyuu/ucore_lib_bioniclibc