modern
------

AntiX (sysv)
Q4OS (sysv init with trinity)
FC1 (sysv init)
OpenBSD 4.7 (bsd init)
ChromeOS (upstart)
Fedora 14 (upstart)
Vector Linux (sysv & bsd init hybrid)
Basic Linux 3 (busybox)
Embedix Linux on zaurus

classic systems
---------------

Unix v5 (bell labs init)
Unix v6 (bell labs init)
Unix v7 (bell labs init)
2.11BSD (bsd init)
4.3BSD (bsd init) quasijarus