Keep in mind that Samsung is in a fairly uncommon position. They make both NAND and controller so they can cherry pick TLC NAND to be used for their SSDs and they can design the controller to alleviate weaknesses inherent in TLC NAND for improved longevity and performance. I reckon having your own NAND fab is pretty much necessary to replicate the feat meaning either Intel, Crucial, SanDisk or Toshiba. If just any other manufacturer tried to do the same thing Samsung did with cheap, commodity TLC NAND, I think SSDs lasting just a few months to a year would become pretty common.
As for SSD controllers...
Intel: Marvell, SandForce or in-house
Crucial: Marvell, Phison
SanDisk: Marvell, SandForce or in-house
Corsair: Marvell, SandForce, LAMD (Indilinx, too, I think, before it was acquired by OCZ)
OCZ: Indilinx (in-house), SandForce
Kingston: JMicron, SandForce
Western Digital: JMicron
Most others use SandForce with a smattering of the occasional JMicron or Phison.