Plan 9 C and the rc(1) shell by far. Plan 9 C is still C but has a lot of things fixed and the plan 9 libs are great. The rc(1) shell I like because its much mo

Plan 9 C and the rc(1) shell by far. Plan 9 C is still C but has a lot of things fixed and the plan 9 libs are great. The rc(1) shell I like because its much more consistent than any other shell I've used.