1.torvalds / linuxLinux kernel source treeCOther license254K total67K forks+13,695 starsfrom 240,711 · score 9.52
2.mit-pdos / xv6-riscvXv6 for RISC-VCOther license11K total4.6K forks+643 starsfrom 10,107 · score 6.47
3.dspinellis / unix-history-repoContinuous Unix commit history from 1970 until todayunixfreebsdbell-labshistoryevolutionberkeley+1 moreAssemblyOther license7.3K total506 forks+68 starsfrom 7,226 · score 4.23