I use a Radiolink Transmitter

[Nomes]

What other transmitters and receivers use the same Protocol as Radiolink transmitter and receivers are compatible?

Random Radios, I think.
RadioMaster, DeviationTX and OpenTX/EdgeTX ,Jumper, HotRC

Flysky or Spektrum?

[tortillaweak]

What other transmitters and receivers use the same Protocol as Radiolink transmitter and receivers are compatible?

Random Radios, I think.
RadioMaster, DeviationTX and OpenTX/EdgeTX ,Jumper, HotRC

Flysky or Spektrum?

The protocols you mentioned are perfectly compatible with Radiolink. I am using them as well.

[quitcherbitchen]

I think you forgot to mention that you will need a 4 to 1 module to get other receivers to work with radiolink. I bought a Radiolink t16 and I am extremely disappointed in it mostly because the programming is too basic. It works great for simple models, but I fly and use ground vehicles and found it lacking for the more programmability. Mostly with my tanks and cars.