Semiconductors- operational amplifiers- integrated circuits- chips?

-would anyone know if any semiconductor company makes and sells stand alone, self contained, complete unity gain inverting buffers ( looking for single chip which DOESN'T require any external parts ) I know how to make the inverting amplifier using an op amp and external resistors) BUT I just wanted to know that just like you could buy a chip with four comparators built into it well I was wondering if there is a chip with four inverting unity gain amplifiers built into it, well if there was such a thing out there. please and thank you