A cryptocurrency or Bitcoin wallet is a device, physical medium, program or a service which stores the public and/or private keys and can be used to track ownership, receive or spend cryptocurrencies.

Bitcoin wallet
Payeer offers instant payments and instant exchange – lots of electronic payment systems are available. You may quickly transfer money from one electronic wallet to another with very low commission and without any delay.
It is not good idea to store cryptocurrency in exchange site for long time. But Binance allows users to secure their accounts with 2FA and Google Authenticator. Binance is not decentralized so in a nutshell it means the exchange has control over your coins, but Binance has very tight security and has never been hacked.
CoinPayments : CoinPayments is a payment processor that allows merchants to accept Bitcoin and hundreds of altcoins in their store through easy to use plugins, APIs and POS interfaces. CoinPayments provides a wide variety of innovative services, including cold storage, multi-signature, instant confirmations, plugins for easy integration of payment features and merchant tools, vaulting for long term storage, and many more features.CoinPayments strives to be at the forefront of the emerging cryptocurrency market by dynamically adapting to changing conditions and staying true to their roots of supporting bitcoin and the many other cryptocurrencies in the market.
Coinbase : Coinbase is a digital currency wallet and platform where merchants and consumers can transact with new digital currencies like bitcoin, ethereum, and litecoin. We’re based in San Francisco, California.
Bitcoin is the world’s most widely used alternative currency with a total market cap of over $100 billion. The bitcoin network is made up of thousands of computers run by individuals all over the world.
Coinbase, the most trusted company in the space, is looking for you to join our rapidly growing team.Coinbase is a service used for buying and selling cryptocurrencies. Users can buy cryptocurrencies by connecting their bank account, credit card, or debit card to theirCoinbase account and making a purchase in much the same way someone would buy something on another online store such as Amazon.