Hi guys, Let's say I have my paper wallet, how can I spend my bitcoin if the software that created my private keys stop working like bitcoint core or eletrum ?
I'm not sure why people like to think in such scenario. Electrum may go down (unlikely) but It's impossible for Bitcoin Core to go down otherwise bitcoin will go down too and you won't shouldn't care about your bitcoins anymore if that happens.
Other than that, you can import your private keys to blockchain.info wallet . As long as you have access to your private keys , you should be fine.