Is there wallets to store multiple Alt coins (cryptocurrencies) in one place?

The best wallets options are always paper, hardware, and core wallets in terms of security and control.

However there are no core wallets that store multiple coins, instead there are exchanges and platforms.

Following are some of the best exchanges/ platforms / wallets IMO :

    Bittrex
    Bitstamp
    Holytransaction
    Bitpay
    Poloniex
    Kraken
    Exodus
    Coinomi
    Electrum
    Jaxx