freestanding

adjective4

1. •
   Standing or set apart.

   • The Leaning Tower of Pisa is a freestanding bell tower.
2. •
   Not attached to anything.
3. •
   Not supported by or on anything; independent.

   • a freestanding hospital not associated with any university medical school
4. •
   Of a computer program: that runs directly on a computer's hardware, without being managed by an operating system.

   • Freestanding C programs do not need to have a main function. — 1989