fork (2) - create a new process
fork1 (9) - create a new process
openpty, login_tty, forkpty (3) - tty utility functions
perlfork (1) - Perl's fork() emulation
pthread_atfork (3) - specify handler functions to call when the process forks
rfork (2) - control new processes
systrace_redirect, systrace_fork, systrace_exit (9) - enforce policies for system calls
vfork (2) - spawn new process and block parent
Apache::fork (3p) - Override Perl's built-in fork()
ModPerl::PerlRunPrefork (3p) - Run unaltered CGI scripts under mod_perl
ModPerl::RegistryPrefork (3p) - Run unaltered CGI scripts under mod_perl
Net::Server::Daemonize (3p) - Safe fork and daemonization utilities
Net::Server::Fork (3p) - Net::Server personality
Net::Server::PreFork (3p) - Net::Server personality
Net::Server::PreForkSimple (3p) - Net::Server personality
Parallel::ForkManager (3p) - A simple parallel processing fork manager
spfd (1) - simple forking daemon to provide SPF query services