Autoruns - See what programs are configured to startup automatically when your system boots and you login.

systemd - systemd is a replacement for the init daemon for Linux (either System V or BSD-style).

Startup Delayer - Startup Delayer gives you the power to optimize your Startup Process by delaying applications from starting up as soon as you log into your computer. By delaying the applications during start up, your computer becomes usable a lot faster.

runit - runit is a cross-platform Unix init scheme with service supervision, a replacement for sysvinit...

Autorun Organizer - Free startup manager with delay option.

sysvinit - Savannah is a central point for development, distribution and maintenance of free software, both GNU and non-GNU.