Electronic – Relay(or Alternative of relay) without pull-back feature

Generally relay triggers when current passes through its coil. When current stops flowing, moving terminal of relay is pulled back into the default situation. I need relay, once triggered, to remain in that situation only regardless of the current. In short, I want the relay without spring. I am pretty sure that this kind of relay doesn't exist, but there must be a component which satisfies this requirements. I mostly work on Digital and FPGA side, so I don't have enough knowledge about Analog.If anyone can suggest me a component which fits here, it will be very helpful for me