I do not know your question is the wallet for any altcoins. If you only join the airdrop or bounty, it is almost the token erc-20, I recommend using Myetherwallet as it is easy to use, if you need more security you can use metamask. If you have the money, buy a hard wallet like Nano S ledger or trezor for added security, as well as can accommodate almost all popular types of altcoins.